Merge branch 'develop'

Increment version
Enhance channelID extraction
2021-07-01 23:40:47 +09:00 · 2021-07-01 23:39:36 +09:00 · 2021-07-01 22:44:41 +09:00 · 2021-07-01 20:51:16 +09:00 · 2021-06-08 19:21:46 +09:00 · 2021-06-02 03:37:37 +00:00
119 changed files with 70337 additions and 8548 deletions
--- a/.github/workflows/run_test.yml
+++ b/.github/workflows/run_test.yml
@@ -0,0 +1,27 @@
+name: Run All UnitTest
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: [3.7, 3.8, 3.9]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt -r requirements_test.txt
+      - name: Test with pytest
+        run: |
+          export PYTHONPATH=./
+          pytest --verbose --color=yes
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,39 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+.pytest_cache/
+
+#logs
+log.txt
+*.log
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+
+# VSCode
+.vscode
+
+# develop
+*.egg-info/
+
+# Pypi dist
+dist/
+README.rst
+temporary/
+# Pypi wheel
+build/
+exclude/
--- a/21
+++ b/21
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 taizan-hokuto
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,5 +1,5 @@
 include requirements.txt
 include requirements_test.txt
-include README.MD
+include README.md
 global-exclude tests/*
 global-exclude pytchat/testrun*.py
--- a/13
+++ b/13
@@ -0,0 +1,13 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+httpx = {extras = ["http2"], version = "0.16.1"}
+
+[dev-packages]
+pytest-mock = "*"
+pytest-httpx = "*"
+wheel = "*"
+twine = "*"
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -0,0 +1,448 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "e1eb34f14c75998519a90838b283ccd23bd168afa8e4837f956c5c4df66376f9"
+        },
+        "pipfile-spec": 6,
+        "requires": {},
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "certifi": {
+            "hashes": [
+                "sha256:2bbf76fd432960138b3ef6dda3dde0544f27cbf8546c458e60baf371917ba9ee",
+                "sha256:50b1e4f8446b06f41be7dd6338db18e0990601dce795c2b1686458aa7e8fa7d8"
+            ],
+            "version": "==2021.5.30"
+        },
+        "h11": {
+            "hashes": [
+                "sha256:36a3cb8c0a032f56e2da7084577878a035d3b61d104230d4bd49c0c6b555a9c6",
+                "sha256:47222cb6067e4a307d535814917cd98fd0a57b6788ce715755fa2b6c28b56042"
+            ],
+            "version": "==0.12.0"
+        },
+        "h2": {
+            "hashes": [
+                "sha256:61e0f6601fa709f35cdb730863b4e5ec7ad449792add80d1410d4174ed139af5",
+                "sha256:875f41ebd6f2c44781259005b157faed1a5031df3ae5aa7bcb4628a6c0782f14"
+            ],
+            "version": "==3.2.0"
+        },
+        "hpack": {
+            "hashes": [
+                "sha256:0edd79eda27a53ba5be2dfabf3b15780928a0dff6eb0c60a3d6767720e970c89",
+                "sha256:8eec9c1f4bfae3408a3f30500261f7e6a65912dc138526ea054f9ad98892e9d2"
+            ],
+            "version": "==3.0.0"
+        },
+        "httpcore": {
+            "hashes": [
+                "sha256:37ae835fb370049b2030c3290e12ed298bf1473c41bb72ca4aa78681eba9b7c9",
+                "sha256:93e822cd16c32016b414b789aeff4e855d0ccbfc51df563ee34d4dbadbb3bcdc"
+            ],
+            "version": "==0.12.3"
+        },
+        "httpx": {
+            "extras": [
+                "http2"
+            ],
+            "hashes": [
+                "sha256:126424c279c842738805974687e0518a94c7ae8d140cd65b9c4f77ac46ffa537",
+                "sha256:9cffb8ba31fac6536f2c8cde30df859013f59e4bcc5b8d43901cb3654a8e0a5b"
+            ],
+            "index": "pypi",
+            "version": "==0.16.1"
+        },
+        "hyperframe": {
+            "hashes": [
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+                "sha256:a9f5c17f2cc3c719b917c4f33ed1c61bd1f8dfac4b1bd23b7c80b3400971b41f"
+            ],
+            "version": "==5.2.0"
+        },
+        "idna": {
+            "hashes": [
+                "sha256:14475042e284991034cb48e06f6851428fb14c4dc953acd9be9a5e95c7b6dd7a",
+                "sha256:467fbad99067910785144ce333826c71fb0e63a425657295239737f7ecd125f3"
+            ],
+            "version": "==3.2"
+        },
+        "rfc3986": {
+            "extras": [
+                "idna2008"
+            ],
+            "hashes": [
+                "sha256:270aaf10d87d0d4e095063c65bf3ddbc6ee3d0b226328ce21e036f946e421835",
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+            ],
+            "version": "==1.5.0"
+        },
+        "sniffio": {
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+                "sha256:471b71698eac1c2112a40ce2752bb2f4a4814c22a54a3eed3676bc0f5ca9f663",
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+            ],
+            "version": "==1.2.0"
+        }
+    },
+    "develop": {
+        "attrs": {
+            "hashes": [
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+            "version": "==21.2.0"
+        },
+        "bleach": {
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+            ],
+            "version": "==3.3.0"
+        },
+        "certifi": {
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+                "sha256:50b1e4f8446b06f41be7dd6338db18e0990601dce795c2b1686458aa7e8fa7d8"
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+            "hashes": [
+                "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0",
+                "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"
+            ],
+            "version": "==0.13.1"
+        },
+        "py": {
+            "hashes": [
+                "sha256:21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3",
+                "sha256:3b80836aa6d1feeaa108e046da6423ab8f6ceda6468545ae8d02d9d58d18818a"
+            ],
+            "version": "==1.10.0"
+        },
+        "pycparser": {
+            "hashes": [
+                "sha256:2d475327684562c3a96cc71adf7dc8c4f0565175cf86b6d7a404ff4c771f15f0",
+                "sha256:7582ad22678f0fcd81102833f60ef8d0e57288b6b5fb00323d101be910e35705"
+            ],
+            "version": "==2.20"
+        },
+        "pygments": {
+            "hashes": [
+                "sha256:a18f47b506a429f6f4b9df81bb02beab9ca21d0a5fee38ed15aef65f0545519f",
+                "sha256:d66e804411278594d764fc69ec36ec13d9ae9147193a1740cd34d272ca383b8e"
+            ],
+            "version": "==2.9.0"
+        },
+        "pyparsing": {
+            "hashes": [
+                "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1",
+                "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"
+            ],
+            "version": "==2.4.7"
+        },
+        "pytest": {
+            "hashes": [
+                "sha256:50bcad0a0b9c5a72c8e4e7c9855a3ad496ca6a881a3641b4260605450772c54b",
+                "sha256:91ef2131a9bd6be8f76f1f08eac5c5317221d6ad1e143ae03894b862e8976890"
+            ],
+            "version": "==6.2.4"
+        },
+        "pytest-httpx": {
+            "hashes": [
+                "sha256:0a7c56e559b23efbf857054cd74de60a7c540694a162423f89c70da6ad358d8e",
+                "sha256:d32e8f6fb7e028f0313f5f5a2d463c8673eb43fd11a9bfe8527299717a7764c4"
+            ],
+            "index": "pypi",
+            "version": "==0.10.1"
+        },
+        "pytest-mock": {
+            "hashes": [
+                "sha256:024e405ad382646318c4281948aadf6fe1135632bea9cc67366ea0c4098ef5f2",
+                "sha256:a4d6d37329e4a893e77d9ffa89e838dd2b45d5dc099984cf03c703ac8411bb82"
+            ],
+            "index": "pypi",
+            "version": "==3.3.1"
+        },
+        "readme-renderer": {
+            "hashes": [
+                "sha256:63b4075c6698fcfa78e584930f07f39e05d46f3ec97f65006e430b595ca6348c",
+                "sha256:92fd5ac2bf8677f310f3303aa4bce5b9d5f9f2094ab98c29f13791d7b805a3db"
+            ],
+            "version": "==29.0"
+        },
+        "requests": {
+            "hashes": [
+                "sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804",
+                "sha256:c210084e36a42ae6b9219e00e48287def368a26d03a048ddad7bfee44f75871e"
+            ],
+            "version": "==2.25.1"
+        },
+        "requests-toolbelt": {
+            "hashes": [
+                "sha256:380606e1d10dc85c3bd47bf5a6095f815ec007be7a8b69c878507068df059e6f",
+                "sha256:968089d4584ad4ad7c171454f0a5c6dac23971e9472521ea3b6d49d610aa6fc0"
+            ],
+            "version": "==0.9.1"
+        },
+        "rfc3986": {
+            "extras": [
+                "idna2008"
+            ],
+            "hashes": [
+                "sha256:270aaf10d87d0d4e095063c65bf3ddbc6ee3d0b226328ce21e036f946e421835",
+                "sha256:a86d6e1f5b1dc238b218b012df0aa79409667bb209e58da56d0b94704e712a97"
+            ],
+            "version": "==1.5.0"
+        },
+        "secretstorage": {
+            "hashes": [
+                "sha256:422d82c36172d88d6a0ed5afdec956514b189ddbfb72fefab0c8a1cee4eaf71f",
+                "sha256:fd666c51a6bf200643495a04abb261f83229dcb6fd8472ec393df7ffc8b6f195"
+            ],
+            "markers": "sys_platform == 'linux'",
+            "version": "==3.3.1"
+        },
+        "six": {
+            "hashes": [
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
+            ],
+            "version": "==1.16.0"
+        },
+        "sniffio": {
+            "hashes": [
+                "sha256:471b71698eac1c2112a40ce2752bb2f4a4814c22a54a3eed3676bc0f5ca9f663",
+                "sha256:c4666eecec1d3f50960c6bdf61ab7bc350648da6c126e3cf6898d8cd4ddcd3de"
+            ],
+            "version": "==1.2.0"
+        },
+        "toml": {
+            "hashes": [
+                "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b",
+                "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"
+            ],
+            "version": "==0.10.2"
+        },
+        "tqdm": {
+            "hashes": [
+                "sha256:736524215c690621b06fc89d0310a49822d75e599fcd0feb7cc742b98d692493",
+                "sha256:cd5791b5d7c3f2f1819efc81d36eb719a38e0906a7380365c556779f585ea042"
+            ],
+            "version": "==4.61.0"
+        },
+        "twine": {
+            "hashes": [
+                "sha256:34352fd52ec3b9d29837e6072d5a2a7c6fe4290e97bba46bb8d478b5c598f7ab",
+                "sha256:ba9ff477b8d6de0c89dd450e70b2185da190514e91c42cc62f96850025c10472"
+            ],
+            "index": "pypi",
+            "version": "==3.2.0"
+        },
+        "urllib3": {
+            "hashes": [
+                "sha256:753a0374df26658f99d826cfe40394a686d05985786d946fbe4165b5148f5a7c",
+                "sha256:a7acd0977125325f516bda9735fa7142b909a8d01e8b2e4c8108d0984e6e0098"
+            ],
+            "index": "pypi",
+            "version": "==1.26.5"
+        },
+        "webencodings": {
+            "hashes": [
+                "sha256:a0af1213f3c2226497a97e2b3aa01a7e4bee4f403f95be16fc9acd2947514a78",
+                "sha256:b36a1c245f2d304965eb4e0a82848379241dc04b865afcc4aab16748587e1923"
+            ],
+            "version": "==0.5.1"
+        },
+        "wheel": {
+            "hashes": [
+                "sha256:906864fb722c0ab5f2f9c35b2c65e3af3c009402c108a709c0aca27bc2c9187b",
+                "sha256:aaef9b8c36db72f8bf7f1e54f85f875c4d466819940863ca0b3f3f77f0a1646f"
+            ],
+            "index": "pypi",
+            "version": "==0.36.1"
+        },
+        "zipp": {
+            "hashes": [
+                "sha256:3607921face881ba3e026887d8150cca609d517579abe052ac81fc5aeffdbd76",
+                "sha256:51cb66cc54621609dd593d1787f286ee42a5c0adbb4b29abea5a63edc3e03098"
+            ],
+            "version": "==3.4.1"
+        }
+    }
+}
--- a/README.md
+++ b/README.md
@@ -2,125 +2,66 @@ pytchat
 =======

 pytchat is a python library for fetching youtube live chat.
+ 

+<br><br><br>
 ## Description
 pytchat is a python library for fetching youtube live chat
-without using youtube api, Selenium or BeautifulSoup.
+without using Selenium or BeautifulSoup.

 Other features:
-+ Customizable chat data processors including youtube api compatible one.
+ Customizable [chat data processors](https://github.com/taizan-hokuto/pytchat/wiki/ChatProcessor) including youtube api compatible one.
 + Available on asyncio context. 
 + Quick fetching of initial chat data by generating continuation params
 instead of web scraping.

-For more detailed information, see [wiki](https://github.com/taizan-hokuto/pytchat/wiki).
+For more detailed information, see [wiki](https://github.com/taizan-hokuto/pytchat/wiki). <br>
+[wiki (Japanese)](https://github.com/taizan-hokuto/pytchat/wiki/Home_jp)

 ## Install
 ```python
 pip install pytchat
 ```
-## Demo
-![demo](https://taizan-hokuto.github.io/statics/demo.gif "demo")
-
 ## Examples
-### on-demand mode
-```python
-from pytchat import LiveChat

-chat = LiveChat("rsHWP7IjMiw")
+
+### Fetch chat data (see [wiki](https://github.com/taizan-hokuto/pytchat/wiki/PytchatCore))
+```python
+import pytchat
+chat = pytchat.create(video_id="uIx8l2xlYVY")
 while chat.is_alive():
-  data = chat.get()
-  for c in data.items:
-    print(f"{c.datetime} [{c.author.name}]-{c.message} {c.amountString}")
-    data.tick()
+    for c in chat.get().sync_items():
+        print(f"{c.datetime} [{c.author.name}]- {c.message}")
 ```

-### callback mode
+
+### Output JSON format string (feature of [DefaultProcessor](https://github.com/taizan-hokuto/pytchat/wiki/DefaultProcessor))
 ```python
-from pytchat import LiveChat
+import pytchat
 import time

-#callback function is automatically called.
-def display(data):
-  for c in data.items:
-    print(f"{c.datetime} [{c.author.name}]-{c.message} {c.amountString}")
-    data.tick()
-
-if __name__ == '__main__':
-  chat = LiveChat("rsHWP7IjMiw", callback = display)
-  while chat.is_alive():
-    #other background operation.
-    time.sleep(3)
-
-```
-
-### asyncio context:
-```python
-from pytchat import LiveChatAsync
-from concurrent.futures import CancelledError
-import asyncio
-
-async def main():
-  chat = LiveChatAsync("rsHWP7IjMiw", callback = func)
-  while chat.is_alive():
-    #other background operation.
-    await asyncio.sleep(3)
-
-#callback function is automatically called.
-async def func(data):
-  for c in data.items:
-    print(f"{c.datetime} [{c.author.name}]-{c.message} {c.amountString}")
-    await data.tick_async()
-
-if __name__ == '__main__':
-  try:
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
-  except CancelledError:
-    pass
-```
-
-
-### youtube api compatible processor:
-```python
-from pytchat import LiveChat, CompatibleProcessor
-import time
-
-chat = LiveChat("rsHWP7IjMiw", 
-  processor = CompatibleProcessor() )
-
+chat = pytchat.create(video_id="uIx8l2xlYVY")
 while chat.is_alive():
-  data = chat.get()
-  polling = data['pollingIntervalMillis']/1000
-  for c in data['items']:
-    if c.get('snippet'):
-      print(f"[{c['authorDetails']['displayName']}]"
-            f"-{c['snippet']['displayMessage']}")
-      time.sleep(polling/len(data['items']))
-
+    print(chat.get().json())
+    time.sleep(5)
+    '''
+    # Each chat item can also be output in JSON format.
+    for c in chat.get().items:
+        print(c.json())
+    '''     
 ```
-### replay: 
-If specified video is not live,
-automatically try to fetch archived chat data.

-```python
-from pytchat import LiveChat

-def main():
-  #seektime (seconds): start position of chat.
-  chat = ReplayChat("ojes5ULOqhc", seektime = 60*30)
-  while chat.is_alive():
-    data = chat.get()
-    for c in data.items:
-      print(f"{c.elapsedTime} [{c.author.name}]-{c.message} {c.amountString}")
-      data.tick()
+### other
+ Fetch chat with a buffer ([LiveChat](https://github.com/taizan-hokuto/pytchat/wiki/LiveChat))
+
+ Use with asyncio ([LiveChatAsync](https://github.com/taizan-hokuto/pytchat/wiki/LiveChatAsync))
+
+ YT API compatible chat processor ([CompatibleProcessor](https://github.com/taizan-hokuto/pytchat/wiki/CompatibleProcessor))

-if __name__ == '__main__':
-  main()
-```

 ## Structure of Default Processor
-Each item can be got with items() function.
+Each item can be got with `sync_items()` function.
 <table>
  <tr>
    <th>name</th>
@@ -145,7 +86,7 @@ Each item can be got with items() function.
  <tr>
    <td>messageEx</td>
    <td>str</td>
-    <td>list of message texts and emoji URLs.</td>
+    <td>list of message texts and emoji dicts(id, txt, url).</td>
  </tr>
  <tr>
    <td>timestamp</td>
@@ -246,8 +187,4 @@ Structure of author object.

 [![MIT License](http://img.shields.io/badge/license-MIT-blue.svg?style=flat)](LICENSE)

-## Author

-[taizan-hokuto](https://github.com/taizan-hokuto)
-
-[twitter:@taizan205](https://twitter.com/taizan205)
--- a/pytchat/init.py
+++ b/pytchat/init.py
@@ -1,26 +1,44 @@
 """
-pytchat is a python library for fetching youtube live chat without using yt api, Selenium, or BeautifulSoup.
+pytchat is a lightweight python library to browse youtube livechat without Selenium or BeautifulSoup.
 """
-__copyright__    = 'Copyright (C) 2019 taizan-hokuto'
-__version__      = '0.0.4.9'
+__copyright__    = 'Copyright (C) 2019, 2020 taizan-hokuto'
+__version__      = '0.5.4'
 __license__      = 'MIT'
 __author__       = 'taizan-hokuto'
 __author_email__ = '55448286+taizan-hokuto@users.noreply.github.com'
 __url__          = 'https://github.com/taizan-hokuto/pytchat'

-__all__ = ["core_async","core_multithread","processors"]
+
+from .exceptions import (
+    ChatParseException,
+    ResponseContextError,
+    NoContents,
+    NoContinuation,
+    IllegalFunctionCall,
+    InvalidVideoIdException,
+    UnknownConnectionError,
+    RetryExceedMaxCount,
+    ChatDataFinished,
+    ReceivedUnknownContinuation,
+    FailedExtractContinuation,
+    VideoInfoParseError,
+    PatternUnmatchError
+)

 from .api import (
    config,
    LiveChat,
    LiveChatAsync,
-    ReplayChat,
-    ReplayChatAsync,
    ChatProcessor,
    CompatibleProcessor,
-    DefaultProcessor, 
+    DummyProcessor,
+    DefaultProcessor,
+    HTMLArchiver,
+    TSVArchiver,
+    JsonfileArchiver,
    SimpleDisplayProcessor,
-    JsonfileArchiveProcessor,
    SpeedCalculator,
-    DummyProcessor
-)
+    SuperchatCalculator,
+    create
+)
+# flake8: noqa
--- a/pytchat/api.py
+++ b/pytchat/api.py
@@ -1,12 +1,34 @@
+from . import config
+from .core import create
 from .core_multithread.livechat import LiveChat
 from .core_async.livechat import LiveChatAsync
-from .core_multithread.replaychat import ReplayChat
-from .core_async.replaychat import ReplayChatAsync
 from .processors.chat_processor import ChatProcessor
-from .processors.default.processor import DefaultProcessor
 from .processors.compatible.processor import CompatibleProcessor
-from .processors.simple_display_processor import SimpleDisplayProcessor
-from .processors.jsonfile_archive_processor import JsonfileArchiveProcessor
-from .processors.speed_calculator import SpeedCalculator
+from .processors.default.processor import DefaultProcessor
 from .processors.dummy_processor import DummyProcessor
-from . import config
+from .processors.html_archiver import HTMLArchiver
+from .processors.tsv_archiver import TSVArchiver
+from .processors.jsonfile_archiver import JsonfileArchiver
+from .processors.simple_display_processor import SimpleDisplayProcessor
+from .processors.speed.calculator import SpeedCalculator
+from .processors.superchat.calculator import SuperchatCalculator
+
+
+__all__ = [
+    config,
+    LiveChat,
+    LiveChatAsync,
+    ChatProcessor,
+    CompatibleProcessor,
+    DummyProcessor,
+    DefaultProcessor,
+    HTMLArchiver,
+    TSVArchiver,
+    JsonfileArchiver,
+    SimpleDisplayProcessor,
+    SpeedCalculator,
+    SuperchatCalculator,
+    create
+]
+
+# flake8: noqa
--- a/pytchat/config/init.py
+++ b/pytchat/config/init.py
@@ -1,13 +1,16 @@
-import logging
+import logging  # noqa
 from . import mylogger
-
-LOGGER_MODE = None
-
+from base64 import a85decode as dc
 headers = {
-        'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36'}
+    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.183 Safari/537.36 Edg/86.0.622.63,gzip(gfe)',
+}
+m_headers = {
+    'user-agent': 'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Mobile Safari/537.36 Edg/91.0.864.59',
+}
+_sml = dc(b"BQS?8F#ks-GB\\6`H#IhIF^eo7@rH3;H#IhIF^eor06T''Ch\\'(?XmbXF>%9<FC/iuG%G#jBOQ!ICLqcS5tQB2;gCZ)?UdXC;f$GR3)MM2<(0>O7mh!,G@+K5?SO9T@okV").decode()
+_smr = dc(b"BQS?8F#ks-GB\\6`H#IhIF^eo7@rH3;H#IhIF^eor06T''Ch\\'(?XmbXF>%9<FC/iuG%G#jBOQ!iEb03+@<k(QAU-F)8U=fDGsP557S5F7CiNH7;)D3N77^*B6YU@\\?WfBr0emZX=#^").decode()

-def logger(module_name: str):
-    module_logger = mylogger.get_logger(module_name, mode = LOGGER_MODE)
+
+def logger(module_name: str, loglevel=None):
+    module_logger = mylogger.get_logger(module_name, loglevel=loglevel)
    return module_logger
-
-
--- a/pytchat/config/mylogger.py
+++ b/pytchat/config/mylogger.py
@@ -1,32 +1,38 @@
-from logging import NullHandler, getLogger, StreamHandler, FileHandler, Formatter
+from logging import NullHandler, getLogger, StreamHandler, FileHandler
 import logging
-import datetime
+from datetime import datetime


-def get_logger(modname,mode=logging.DEBUG):
+def get_logger(modname, loglevel=logging.DEBUG):
    logger = getLogger(modname)
-    if mode == None:
+    if loglevel is None:
        logger.addHandler(NullHandler())
        return logger
-    logger.setLevel(mode)
-    #create handler1 for showing info
+    logger.setLevel(loglevel)
+    # create handler1 for showing info
    handler1 = StreamHandler()
-    my_formatter  = MyFormatter()
+    my_formatter = MyFormatter()
    handler1.setFormatter(my_formatter)

-    handler1.setLevel(mode) 
+    handler1.setLevel(loglevel)
    logger.addHandler(handler1)
-    #create handler2 for recording log file
-    if mode <= logging.DEBUG:
+    # create handler2 for recording log file
+    if loglevel <= logging.DEBUG:
        handler2 = FileHandler(filename="log.txt", encoding='utf-8')
        handler2.setLevel(logging.ERROR)
        handler2.setFormatter(my_formatter)

-
        logger.addHandler(handler2)
    return logger

+
 class MyFormatter(logging.Formatter):
    def format(self, record):
-        s =(datetime.datetime.fromtimestamp(record.created)).strftime("%m-%d %H:%M:%S")+'| '+ (record.module).ljust(15)+(' { '+record.funcName).ljust(20) +":"+str(record.lineno).rjust(4)+'} - '+record.getMessage()
-        return s
+        timestamp = (
+            datetime.fromtimestamp(record.created)).strftime("%m-%d %H:%M:%S")
+        module = (record.module).ljust(15)
+        funcname = (record.funcName).ljust(18)
+        lineno = str(record.lineno).rjust(4)
+        message = record.getMessage()
+
+        return timestamp + '| ' + module + ' { ' + funcname + ':' + lineno + '} - ' + message
--- a/pytchat/core/init.py
+++ b/pytchat/core/init.py
@@ -0,0 +1,7 @@
+from .pytchat import PytchatCore
+from .. util import extract_video_id
+
+
+def create(video_id: str, **kwargs):
+    _vid = extract_video_id(video_id)
+    return PytchatCore(_vid, **kwargs)
--- a/pytchat/core/pytchat.py
+++ b/pytchat/core/pytchat.py
@@ -0,0 +1,216 @@
+import httpx
+import json
+import signal
+import time
+import traceback
+from ..parser.live import Parser
+from .. import config
+from .. import exceptions
+from ..paramgen import liveparam, arcparam
+from ..processors.default.processor import DefaultProcessor
+from ..processors.combinator import Combinator
+from .. import util
+
+headers = config.headers
+MAX_RETRY = 10
+
+class PytchatCore:
+    '''
+
+    Parameter
+    ---------
+    video_id : str
+
+    seektime : int
+        start position of fetching chat (seconds).
+        This option is valid for archived chat only.
+        If negative value, chat data posted before the start of the broadcast
+        will be retrieved as well.
+
+    processor : ChatProcessor
+
+    interruptable : bool
+        Allows keyboard interrupts.
+        Set this parameter to False if your own threading program causes
+        the problem.
+
+    force_replay : bool
+        force to fetch archived chat data, even if specified video is live.
+
+    topchat_only : bool
+        If True, get only top chat.
+
+    hold_exception : bool [default:True]
+        If True, when exceptions occur, the exception is held internally,
+        and can be raised by raise_for_status().
+
+    replay_continuation : str
+        If this parameter is not None, the processor will attempt to get chat data from continuation.
+        This parameter is only allowed in archived mode.
+
+    Attributes
+    ---------
+    _is_alive : bool
+        Flag to stop getting chat.
+    '''
+
+    def __init__(self, video_id,
+                 seektime=-1,
+                 processor=DefaultProcessor(),
+                 interruptable=True,
+                 force_replay=False,
+                 topchat_only=False,
+                 hold_exception=True,
+                 logger=config.logger(__name__),
+                 replay_continuation=None
+                 ):
+        self._video_id = util.extract_video_id(video_id)
+        self.seektime = seektime
+        if isinstance(processor, tuple):
+            self.processor = Combinator(processor)
+        else:
+            self.processor = processor
+        self._is_alive = True
+        self._is_replay = force_replay or (replay_continuation is not None)
+        self._hold_exception = hold_exception
+        self._exception_holder = None
+        self._parser = Parser(
+            is_replay=self._is_replay,
+            exception_holder=self._exception_holder
+        )
+        self._first_fetch = replay_continuation is None
+        self._fetch_url = config._sml if replay_continuation is None else config._smr
+        self._topchat_only = topchat_only
+        self._dat = ''
+        self._last_offset_ms = 0
+        self._logger = logger
+        self.continuation = replay_continuation
+        if interruptable:
+            signal.signal(signal.SIGINT, lambda a, b: self.terminate())
+        self._setup()
+
+    def _setup(self):
+        if not self.continuation:
+            time.sleep(0.1)  # sleep shortly to prohibit skipping fetching data
+            """Fetch first continuation parameter,
+            create and start _listen loop.
+            """
+            self.continuation = liveparam.getparam(
+                self._video_id,
+                channel_id=util.get_channelid(httpx.Client(http2=True), self._video_id),
+                past_sec=3)
+
+    def _get_chat_component(self):
+        ''' Fetch chat data and store them into buffer,
+        get next continuaiton parameter and loop.
+
+        Parameter
+        ---------
+        continuation : str
+            parameter for next chat data
+        '''
+        try:
+            with httpx.Client(http2=True) as client:
+                if self.continuation and self._is_alive:
+                    contents = self._get_contents(self.continuation, client, headers)
+                    metadata, chatdata = self._parser.parse(contents)
+                    timeout = metadata['timeoutMs'] / 1000
+                    chat_component = {
+                        "video_id": self._video_id,
+                        "timeout": timeout,
+                        "chatdata": chatdata
+                    }
+                    self.continuation = metadata.get('continuation')
+                    self._last_offset_ms = metadata.get('last_offset_ms', 0)
+                    return chat_component
+        except exceptions.ChatParseException as e:
+            self._logger.debug(f"[{self._video_id}]{str(e)}")
+            self._raise_exception(e)
+        except Exception as e:
+            self._logger.error(f"{traceback.format_exc(limit=-1)}")
+            self._raise_exception(e)
+
+    def _get_contents(self, continuation, client, headers):
+        '''Get 'continuationContents' from livechat json.
+           If contents is None at first fetching,
+           try to fetch archive chat data.
+
+          Return:
+          -------
+            'continuationContents' which includes metadata & chat data.
+        '''
+        livechat_json = (
+            self._get_livechat_json(continuation, client, replay=self._is_replay, offset_ms=self._last_offset_ms)
+        )
+        contents, dat = self._parser.get_contents(livechat_json)
+        if self._dat == '' and dat:
+            self._dat = dat
+        if self._first_fetch:
+            if contents is None or self._is_replay:
+                '''Try to fetch archive chat data.'''
+                self._parser.is_replay = True
+                self._fetch_url = config._smr
+                continuation = arcparam.getparam(
+                    self._video_id, self.seektime, self._topchat_only, util.get_channelid(client, self._video_id))
+                livechat_json = self._get_livechat_json(continuation, client, replay=True, offset_ms=self.seektime * 1000)
+                reload_continuation = self._parser.reload_continuation(
+                    self._parser.get_contents(livechat_json)[0])
+                if reload_continuation:
+                    livechat_json = (self._get_livechat_json(
+                        reload_continuation, client, headers))
+                contents, _ = self._parser.get_contents(livechat_json)
+                self._is_replay = True
+            self._first_fetch = False
+        return contents
+
+    def _get_livechat_json(self, continuation, client, replay: bool, offset_ms: int = 0):
+        '''
+        Get json which includes chat data.
+        '''
+        livechat_json = None
+        err = None
+        if offset_ms < 0:
+            offset_ms = 0
+        param = util.get_param(continuation, dat=self._dat, replay=replay, offsetms=offset_ms)
+        for _ in range(MAX_RETRY + 1):
+            with httpx.Client(http2=True) as client:
+                try:
+                    response = client.post(self._fetch_url, json=param)
+                    livechat_json = json.loads(response.text)
+                    break
+                except (json.JSONDecodeError, httpx.ConnectTimeout, httpx.ReadTimeout, httpx.ConnectError) as e:
+                    err = e
+                    time.sleep(2)
+                    continue
+        else:
+            self._logger.error(f"[{self._video_id}]"
+                               f"Exceeded retry count. Last error: {str(err)}")
+            self._raise_exception(exceptions.RetryExceedMaxCount())
+        return livechat_json
+
+    def get(self):
+        if self.is_alive():
+            chat_component = self._get_chat_component()
+            return self.processor.process([chat_component])
+        else:
+            return []
+
+    def is_replay(self):
+        return self._is_replay
+
+    def is_alive(self):
+        return self._is_alive
+
+    def terminate(self):
+        self._is_alive = False
+        self.processor.finalize()
+
+    def raise_for_status(self):
+        if self._exception_holder is not None:
+            raise self._exception_holder
+
+    def _raise_exception(self, exception: Exception = None):
+        self.terminate()
+        if self._hold_exception is False:
+            raise exception
+        self._exception_holder = exception
--- a/pytchat/core_async/buffer.py
+++ b/pytchat/core_async/buffer.py
@@ -1,28 +1,38 @@

 import asyncio
+
+
 class Buffer(asyncio.Queue):
    '''
-    チャットデータを格納するバッファの役割を持つFIFOキュー
+    Buffer for storing chat data.

    Parameter
    ---------
    maxsize : int
-        格納するチャットブロックの最大個数。0の場合は無限。
-        最大値を超える場合は古いチャットブロックから破棄される。
+        Maximum number of chat blocks to be stored.
+        If it exceeds the maximum, the oldest chat block will be discarded.
    '''
-    def __init__(self,maxsize = 0):
+
+    def __init__(self, maxsize=0):
        super().__init__(maxsize)
-    
-    async def put(self,item):
+
+    async def put(self, item):
        if item is None:
-            return 
+            return
        if super().full():
            super().get_nowait()
        await super().put(item)

+    def put_nowait(self, item):
+        if item is None:
+            return
+        if super().full():
+            super().get_nowait()
+        super().put_nowait(item)
+
    async def get(self):
        ret = []
        ret.append(await super().get())
        while not super().empty():
            ret.append(super().get_nowait())
-        return ret
+        return ret
--- a/pytchat/core_async/livechat.py
+++ b/pytchat/core_async/livechat.py
@@ -1,93 +1,94 @@
-import aiohttp, asyncio
-import datetime
+
+import asyncio
+import httpx
 import json
-import random
 import signal
 import time
 import traceback
-import urllib.parse
-from aiohttp.client_exceptions import ClientConnectorError
-from concurrent.futures import CancelledError
 from asyncio import Queue
+from concurrent.futures import CancelledError
 from .buffer import Buffer
 from ..parser.live import Parser
 from .. import config
-from ..exceptions  import ChatParseException,IllegalFunctionCall
-from ..paramgen    import liveparam, arcparam
+from .. import exceptions
+from .. import util
+from ..paramgen import liveparam, arcparam
 from ..processors.default.processor import DefaultProcessor
 from ..processors.combinator import Combinator

-logger = config.logger(__name__)
 headers = config.headers
 MAX_RETRY = 10


 class LiveChatAsync:
-    '''asyncio(aiohttp)を利用してYouTubeのライブ配信のチャットデータを取得する。
+    '''LiveChatAsync object fetches chat data and stores them
+    in a buffer with asyncio.

    Parameter
    ---------
    video_id : str
-        動画ID

    seektime : int
-        （ライブチャット取得時は無視）
-        取得開始するアーカイブ済みチャットの経過時間(秒）
-        マイナス値を指定した場合は、配信開始前のチャットも取得する。
+        start position of fetching chat (seconds).
+        This option is valid for archived chat only.
+        If negative value, chat data posted before the start of the broadcast
+        will be retrieved as well.

    processor : ChatProcessor
-        チャットデータを加工するオブジェクト

-    buffer : Buffer(maxsize:20[default])
-        チャットデータchat_componentを格納するバッファ。
-        maxsize : 格納できるchat_componentの個数
-        default値20個。1個で約5~10秒分。
+    buffer : Buffer
+        buffer of chat data fetched background.

    interruptable : bool
-        Ctrl+Cによる処理中断を行うかどうか。
+        Allows keyboard interrupts.
+        Set this parameter to False if your own threading program causes
+        the problem.

    callback : func
-        _listen()関数から一定間隔で自動的に呼びだす関数。
+        function called periodically from _listen().

    done_callback : func
-        listener終了時に呼び出すコールバック。
+        function called when listener ends.

    exception_handler : func
-        例外を処理する関数

    direct_mode : bool
-        Trueの場合、bufferを使わずにcallbackを呼ぶ。
-        Trueの場合、callbackの設定が必須
-        (設定していない場合IllegalFunctionCall例外を発生させる）
-    
-    force_replay : bool  
-        Trueの場合、ライブチャットが取得できる場合であっても
-        強制的にアーカイブ済みチャットを取得する。
-    
+        If True, invoke specified callback function without using buffer.
+        callback is required. If not, IllegalFunctionCall will be raised.
+
+    force_replay : bool
+        force to fetch archived chat data, even if specified video is live.
+
    topchat_only : bool
-        Trueの場合、上位チャットのみ取得する。
-          
+        If True, get only top chat.
+
+    replay_continuation : str
+        If this parameter is not None, the processor will attempt to get chat data from continuation.
+        This parameter is only allowed in archived mode.
+
    Attributes
    ---------
    _is_alive : bool
-        チャット取得を停止するためのフラグ
+        Flag to stop getting chat.
    '''

    _setup_finished = False

    def __init__(self, video_id,
-                seektime = 0,
-                processor = DefaultProcessor(),
-                buffer = None,
-                interruptable = True,
-                callback = None,
-                done_callback = None,
-                exception_handler = None,
-                direct_mode = False,
-                force_replay = False,
-                topchat_only = False
-                ): 
-        self.video_id  = video_id
+                 seektime=-1,
+                 processor=DefaultProcessor(),
+                 buffer=None,
+                 interruptable=True,
+                 callback=None,
+                 done_callback=None,
+                 exception_handler=None,
+                 direct_mode=False,
+                 force_replay=False,
+                 topchat_only=False,
+                 logger=config.logger(__name__),
+                 replay_continuation=None
+                 ):
+        self._video_id = util.extract_video_id(video_id)
        self.seektime = seektime
        if isinstance(processor, tuple):
            self.processor = Combinator(processor)
@@ -98,59 +99,65 @@ class LiveChatAsync:
        self._done_callback = done_callback
        self._exception_handler = exception_handler
        self._direct_mode = direct_mode
-        self._is_alive   = True
-        self._is_replay = force_replay
-        self._parser = Parser(is_replay = self._is_replay)
+        self._is_alive = True
+        self._is_replay = force_replay or (replay_continuation is not None)
+        self._parser = Parser(is_replay=self._is_replay)
        self._pauser = Queue()
        self._pauser.put_nowait(None)
-        self._setup()
-        self._first_fetch = True
-        self._fetch_url = "live_chat/get_live_chat?continuation="
+        self._first_fetch = replay_continuation is None
+        self._fetch_url = config._sml if replay_continuation is None else config._smr
        self._topchat_only = topchat_only
-        if not LiveChatAsync._setup_finished:
-            LiveChatAsync._setup_finished = True
-            if exception_handler == None:
-                self._set_exception_handler(self._handle_exception)
-            else:
-                self._set_exception_handler(exception_handler)
-            if interruptable:
-                signal.signal(signal.SIGINT,  
-                    (lambda a, b:asyncio.create_task(
-                    LiveChatAsync.shutdown(None,signal.SIGINT,b))
-                ))
- 
+        self._dat = ''
+        self._last_offset_ms = 0
+        self._logger = logger
+        self.exception = None
+        self.continuation = replay_continuation
+        LiveChatAsync._logger = logger
+
+        if exception_handler:
+            self._set_exception_handler(exception_handler)
+        if interruptable:
+            signal.signal(signal.SIGINT,
+                (lambda a, b: self._keyboard_interrupt()))
+        self._setup()
+
    def _setup(self):
-        #direct modeがTrueでcallback未設定の場合例外発生。
+        # An exception is raised when direct mode is true and no callback is set.
        if self._direct_mode:
            if self._callback is None:
-                raise IllegalFunctionCall(
+                raise exceptions.IllegalFunctionCall(
                    "When direct_mode=True, callback parameter is required.")
        else:
-            #direct modeがFalseでbufferが未設定ならばデフォルトのbufferを作成
+            # Create a default buffer if `direct_mode` is False and buffer is not set.
            if self._buffer is None:
-                self._buffer = Buffer(maxsize = 20)
-                #callbackが指定されている場合はcallbackを呼ぶループタスクを作成
+                self._buffer = Buffer(maxsize=20)
+                # Create a loop task to call callback if the `callback` param is specified.
            if self._callback is None:
-                pass 
+                pass
            else:
-                #callbackを呼ぶループタスクの開始
+                # Create a loop task to call callback if the `callback` param is specified.
                loop = asyncio.get_event_loop()
                loop.create_task(self._callback_loop(self._callback))
-        #_listenループタスクの開始
+        # Start a loop task for _listen()
        loop = asyncio.get_event_loop()
-        listen_task = loop.create_task(self._startlisten())
-        #add_done_callbackの登録
+        self.listen_task = loop.create_task(self._startlisten())
+        # Register add_done_callback
        if self._done_callback is None:
-            listen_task.add_done_callback(self.finish)
+            self.listen_task.add_done_callback(self._finish)
        else:
-            listen_task.add_done_callback(self._done_callback)
+            self.listen_task.add_done_callback(self._done_callback)

    async def _startlisten(self):
        """Fetch first continuation parameter,
        create and start _listen loop.
        """
-        initial_continuation = liveparam.getparam(self.video_id,3)
-        await self._listen(initial_continuation)
+        if not self.continuation:
+            self.continuation = liveparam.getparam(
+                self._video_id,
+                channel_id=util.get_channelid(httpx.Client(http2=True), self._video_id),
+                past_sec=3)
+
+        await self._listen(self.continuation)

    async def _listen(self, continuation):
        ''' Fetch chat data and store them into buffer,
@@ -162,39 +169,41 @@ class LiveChatAsync:
            parameter for next chat data
        '''
        try:
-            async with aiohttp.ClientSession() as session:
+            async with httpx.AsyncClient(http2=True) as client:
                while(continuation and self._is_alive):
                    continuation = await self._check_pause(continuation)
-                    contents = await self._get_contents(
-                        continuation, session, headers)
-                    metadata, chatdata =  self._parser.parse(contents)
-
-                    timeout = metadata['timeoutMs']/1000
+                    contents = await self._get_contents(continuation, client, headers)
+                    metadata, chatdata = self._parser.parse(contents)
+                    continuation = metadata.get('continuation')
+                    if continuation:
+                        self.continuation = continuation
+                    timeout = metadata['timeoutMs'] / 1000
                    chat_component = {
-                        "video_id" : self.video_id,
-                        "timeout"  : timeout,
-                        "chatdata" : chatdata
+                        "video_id": self._video_id,
+                        "timeout": timeout,
+                        "chatdata": chatdata
                    }
-                    time_mark =time.time()
+                    time_mark = time.time()
                    if self._direct_mode:
-                        await self._callback(
-                            self.processor.process([chat_component])
-                            )
+                        processed_chat = self.processor.process(
+                            [chat_component])
+                        if isinstance(processed_chat, tuple):
+                            await self._callback(*processed_chat)
+                        else:
+                            await self._callback(processed_chat)
                    else:
                        await self._buffer.put(chat_component)
-                    diff_time = timeout - (time.time()-time_mark)
-                    await asyncio.sleep(diff_time)        
-                    continuation = metadata.get('continuation')     
-        except ChatParseException as e:
-            #self.terminate()
-            logger.debug(f"[{self.video_id}]{str(e)}")
-            return            
-        except (TypeError , json.JSONDecodeError) :
-            #self.terminate()
-            logger.error(f"{traceback.format_exc(limit = -1)}")
-            return
-        
-        logger.debug(f"[{self.video_id}]finished fetching chat.")
+                    diff_time = timeout - (time.time() - time_mark)
+                    await asyncio.sleep(diff_time)
+                    self._last_offset_ms = metadata.get('last_offset_ms', 0)
+        except exceptions.ChatParseException as e:
+            self._logger.debug(f"[{self._video_id}]{str(e)}")
+            raise
+        except Exception:
+            self._logger.error(f"{traceback.format_exc(limit=-1)}")
+            raise
+
+        self._logger.debug(f"[{self._video_id}] finished fetching chat.")

    async def _check_pause(self, continuation):
        if self._pauser.empty():
@@ -205,86 +214,103 @@ class LiveChatAsync:
            '''
            self._pauser.put_nowait(None)
            if not self._is_replay:
-                continuation = liveparam.getparam(
-                    self.video_id, 3, self._topchat_only)
+                async with httpx.AsyncClient(http2=True) as client:
+                    continuation = await liveparam.getparam(self._video_id, 
+                                    channel_id=util.get_channelid_async(client, self.video_id),
+                                    past_sec=3)
+                    
        return continuation

-    async def _get_contents(self, continuation, session, headers):
-        '''Get 'contents' dict from livechat json.
-           If contents is None at first fetching, 
+    async def _get_contents(self, continuation, client, headers):
+        '''Get 'continuationContents' from livechat json.
+           If contents is None at first fetching,
           try to fetch archive chat data.

          Return:
          -------
-            'contents' dict which includes metadata & chatdata.
+            'continuationContents' which includes metadata & chatdata.
        '''
-        livechat_json = (await 
-            self._get_livechat_json(continuation, session, headers)
-        )
-        contents = self._parser.get_contents(livechat_json)
+        livechat_json = await self._get_livechat_json(continuation, client, replay=self._is_replay, offset_ms=self._last_offset_ms)
+        contents, dat = self._parser.get_contents(livechat_json)
+        if self._dat == '' and dat:
+            self._dat = dat
        if self._first_fetch:
            if contents is None or self._is_replay:
                '''Try to fetch archive chat data.'''
                self._parser.is_replay = True
-                self._fetch_url = "live_chat_replay/get_live_chat_replay?continuation="
+                self._fetch_url = config._smr
+                channelid = await util.get_channelid_async(client, self._video_id)
                continuation = arcparam.getparam(
-                    self.video_id, self.seektime, self._topchat_only)
-                livechat_json = (await  self._get_livechat_json(
-                    continuation, session, headers))
-                contents = self._parser.get_contents(livechat_json)
+                    self._video_id, self.seektime, self._topchat_only, channelid)
+                livechat_json = (await self._get_livechat_json(
+                                 continuation, client, replay=True, offset_ms=self.seektime * 1000))
+                reload_continuation = self._parser.reload_continuation(
+                    self._parser.get_contents(livechat_json)[0])
+                if reload_continuation:
+                    livechat_json = (await self._get_livechat_json(
+                        reload_continuation, client, headers))
+                contents, _ = self._parser.get_contents(livechat_json)
+                self._is_replay = True
            self._first_fetch = False
        return contents

-    async def _get_livechat_json(self, continuation, session, headers):
+    async def _get_livechat_json(self, continuation, client, replay: bool, offset_ms: int = 0):
        '''
        Get json which includes chat data.
        '''
-        continuation = urllib.parse.quote(continuation)
        livechat_json = None
-        status_code = 0
-        url =(
-            f"https://www.youtube.com/{self._fetch_url}{continuation}&pbj=1")
+        if offset_ms < 0:
+            offset_ms = 0
+        param = util.get_param(continuation, dat=self._dat, replay=replay, offsetms=offset_ms)
        for _ in range(MAX_RETRY + 1):
-            async with session.get(url ,headers = headers) as resp:
-                try:
-                    text = await resp.text()
-                    livechat_json = json.loads(text)
-                    break
-                except (ClientConnectorError,json.JSONDecodeError) :
-                    await asyncio.sleep(1)
-                    continue
+            try:
+                resp = await client.post(self._fetch_url, json=param)
+                livechat_json = resp.json()
+                break
+            except (json.JSONDecodeError, httpx.HTTPError):
+                await asyncio.sleep(2)
+                continue
        else:
-            logger.error(f"[{self.video_id}]"
-                    f"Exceeded retry count. status_code={status_code}")
-            return None
+            self._logger.error(f"[{self._video_id}]"
+                               f"Exceeded retry count.")
+            raise exceptions.RetryExceedMaxCount()
        return livechat_json

-    async def _callback_loop(self,callback):
-        """ コンストラクタでcallbackを指定している場合、バックグラウンドで
-        callbackに指定された関数に一定間隔でチャットデータを投げる。        
-        
+    async def _callback_loop(self, callback):
+        """ If a callback is specified in the constructor,
+        it throws chat data at regular intervals to the
+        function specified in the callback in the backgroun
+
        Parameter
        ---------
        callback : func
-            加工済みのチャットデータを渡す先の関数。
+            function to which the processed chat data is passed.
        """
        while self.is_alive():
            items = await self._buffer.get()
-            data = self.processor.process(items)
-            await callback(data)
+            processed_chat = self.processor.process(items)
+            if isinstance(processed_chat, tuple):
+                await self._callback(*processed_chat)
+            else:
+                await self._callback(processed_chat)

    async def get(self):
-        """ bufferからデータを取り出し、processorに投げ、
-        加工済みのチャットデータを返す。
-        
+        """
+        Retrieves data from the buffer,
+        throws it to the processor,
+        and returns the processed chat data.
+
        Returns
-             : Processorによって加工されたチャットデータ
+             : Chat data processed by the Processor
        """
        if self._callback is None:
-            items = await self._buffer.get()
-            return  self.processor.process(items)
-        raise IllegalFunctionCall(
-            "既にcallbackを登録済みのため、get()は実行できません。")
+            if self.is_alive():
+                items = await self._buffer.get()
+                return self.processor.process(items)
+            else:
+                return []
+        raise exceptions.IllegalFunctionCall(
+            "Callback parameter is already set, so get() cannot be performed.")

    def is_replay(self):
        return self._is_replay
@@ -300,47 +326,44 @@ class LiveChatAsync:
            return
        if self._pauser.empty():
            self._pauser.put_nowait(None)
-        
+
    def is_alive(self):
        return self._is_alive

-    def finish(self,sender):
-        '''Listener終了時のコールバック'''
-        try: 
-            self.terminate()
+    def _finish(self, sender):
+        '''Called when the _listen() task finished.'''
+        try:
+            self._task_finished()
        except CancelledError:
-            logger.debug(f'[{self.video_id}]cancelled:{sender}')
+            self._logger.debug(f'[{self._video_id}] cancelled:{sender}')

    def terminate(self):
-        '''
-        Listenerを終了する。
-        '''
+        if self._pauser.empty():
+            self._pauser.put_nowait(None)
        self._is_alive = False
-        if self._direct_mode == False:
-            #bufferにダミーオブジェクトを入れてis_alive()を判定させる
-            self._buffer.put_nowait({'chatdata':'','timeout':0}) 
-        logger.info(f'[{self.video_id}]finished.')
- 
+        self._buffer.put_nowait({})
+        self.processor.finalize()
+    
+    def _keyboard_interrupt(self):
+        self.exception = exceptions.ChatDataFinished()
+        self.terminate()
+
+    def _task_finished(self):
+        if self.is_alive():
+            self.terminate()
+        try:
+            self.listen_task.result()
+        except Exception as e:
+            self.exception = e
+            if not isinstance(e, exceptions.ChatParseException):
+                self._logger.error(f'Internal exception - {type(e)}{str(e)}')
+        self._logger.info(f'[{self._video_id}] finished.')
+
+    def raise_for_status(self):
+        if self.exception is not None:
+            raise self.exception
+
    @classmethod
    def _set_exception_handler(cls, handler):
        loop = asyncio.get_event_loop()
        loop.set_exception_handler(handler)
-    
-    @classmethod
-    def _handle_exception(cls, loop, context):
-        if not isinstance(context["exception"],CancelledError):
-            logger.error(f"Caught exception: {context}")
-        loop= asyncio.get_event_loop()
-        loop.create_task(cls.shutdown(None,None,None))
-
-    @classmethod
-    async def shutdown(cls, event, sig = None, handler=None):
-        logger.debug("shutdown...")
-        tasks = [t for t in asyncio.all_tasks() if t is not
-        asyncio.current_task()]
-        [task.cancel() for task in tasks]
-
-        logger.debug(f"complete remaining tasks...")
-        await asyncio.gather(*tasks,return_exceptions=True)
-        loop = asyncio.get_event_loop()
-        loop.stop()
--- a/pytchat/core_async/replaychat.py
+++ b/pytchat/core_async/replaychat.py
@@ -1,317 +0,0 @@
-import aiohttp, asyncio
-import datetime
-import json
-import random
-import signal
-import time
-import traceback
-import urllib.parse
-import warnings
-from aiohttp.client_exceptions import ClientConnectorError
-from concurrent.futures import CancelledError
-from asyncio import Queue
-from .buffer import Buffer
-from ..parser.replay import Parser
-from .. import config
-from ..exceptions  import ChatParseException,IllegalFunctionCall
-from ..paramgen    import arcparam
-from ..processors.default.processor import DefaultProcessor
-from ..processors.combinator import Combinator
-
-logger = config.logger(__name__)
-headers = config.headers
-MAX_RETRY = 10
-
-
-
-
-class ReplayChatAsync:
-    '''
-    ### -----------------------------------------------------------
-    ### [Warning] ReplayChatAsync is integrated into LiveChatAsync.
-    ### This class is deprecated and will be removed at v0.0.5.0.
-    ### ReplayChatAsyncはLiveChatAsyncに統合しました。
-    ### このクラスはv0.0.5.0で廃止予定です。
-    ### -----------------------------------------------------------
-
-    asyncio(aiohttp)を利用してYouTubeのチャットデータを取得する。
-
-    Parameter
-    ---------
-    video_id : str
-        動画ID
-
-    seektime : int
-        リプレイするチャットデータの開始時間（秒）
-
-    processor : ChatProcessor
-        チャットデータを加工するオブジェクト
-
-    buffer : Buffer(maxsize:20[default])
-        チャットデータchat_componentを格納するバッファ。
-        maxsize : 格納できるchat_componentの個数
-        default値20個。1個で約5~10秒分。
-
-    interruptable : bool
-        Ctrl+Cによる処理中断を行うかどうか。
-
-    callback : func
-        _listen()関数から一定間隔で自動的に呼びだす関数。
-
-    done_callback : func
-        listener終了時に呼び出すコールバック。
-
-    exception_handler : func
-        例外を処理する関数
-
-    direct_mode : bool
-        Trueの場合、bufferを使わずにcallbackを呼ぶ。
-        Trueの場合、callbackの設定が必須
-        (設定していない場合IllegalFunctionCall例外を発生させる）  
-
-    Attributes
-    ---------
-    _is_alive : bool
-        チャット取得を停止するためのフラグ
-    '''
-
-    _setup_finished = False
-
-    def __init__(self, video_id,
-                seektime = 0,
-                processor = DefaultProcessor(),
-                buffer = None,
-                interruptable = True,
-                callback = None,
-                done_callback = None,
-                exception_handler = None,
-                direct_mode = False):
-
-        warnings.warn(""
-            f"\n{'-'*60}\n[WARNING] ReplayChatAsync is integrated "
-            f"into LiveChatAsync.\n{' '*5} This is deprecated and will"
-            f" be removed at v0.0.5.0.\n{'-'*60}\n"
-        )
-        self.video_id  = video_id
-        self.seektime = seektime
-        if isinstance(processor, tuple):
-            self.processor = Combinator(processor)
-        else:
-            self.processor = processor
-        self._buffer = buffer
-        self._callback = callback
-        self._done_callback = done_callback
-        self._exception_handler = exception_handler
-        self._direct_mode = direct_mode
-        self._is_alive   = True
-        self._parser = Parser()
-        self._pauser = Queue()
-        self._pauser.put_nowait(None)
-        self._setup()
-
-        if not ReplayChatAsync._setup_finished:
-            ReplayChatAsync._setup_finished = True
-            if exception_handler == None:
-                self._set_exception_handler(self._handle_exception)
-            else:
-                self._set_exception_handler(exception_handler)
-            if interruptable:
-                signal.signal(signal.SIGINT,
-                  (lambda a, b:asyncio.create_task(  
-                  ReplayChatAsync.shutdown(None,signal.SIGINT,b))
-                ))
-
-    def _setup(self):
-        #direct modeがTrueでcallback未設定の場合例外発生。
-        if self._direct_mode:
-            if self._callback is None:
-                raise IllegalFunctionCall(
-                    "direct_mode=Trueの場合callbackの設定が必須です。")
-        else:
-            #direct modeがFalseでbufferが未設定ならばデフォルトのbufferを作成
-            if self._buffer is None:
-                self._buffer = Buffer(maxsize = 20)
-                #callbackが指定されている場合はcallbackを呼ぶループタスクを作成
-            if self._callback is None:
-                pass 
-            else:
-                #callbackを呼ぶループタスクの開始
-                loop = asyncio.get_event_loop()
-                loop.create_task(self._callback_loop(self._callback))
-        #_listenループタスクの開始
-        loop = asyncio.get_event_loop()
-        listen_task = loop.create_task(self._startlisten())
-        #add_done_callbackの登録
-        if self._done_callback is None:
-            listen_task.add_done_callback(self.finish)
-        else:
-            listen_task.add_done_callback(self._done_callback)
-
-    async def _startlisten(self):
-        """最初のcontinuationパラメータを取得し、
-        _listenループのタスクを作成し開始する
-        """
-        initial_continuation = arcparam.getparam(self.video_id, self.seektime)
-        await self._listen(initial_continuation)
-   
-    async def _listen(self, continuation):
-        ''' continuationに紐付いたチャットデータを取得し
-        Bufferにチャットデータを格納、
-        次のcontinuaitonを取得してループする。
-
-        Parameter
-        ---------
-        continuation : str
-            次のチャットデータ取得に必要なパラメータ
-        '''
-        try:
-            async with aiohttp.ClientSession() as session:
-                while(continuation and self._is_alive):
-                    if self._pauser.empty():
-                        '''pause'''
-                        await self._pauser.get()
-                        '''resume:
-                          prohibit from blocking by putting None into _pauser.
-                        '''
-                        self._pauser.put_nowait(None)
-                        #when replay, not reacquire continuation param
-                    livechat_json = (await
-                      self._get_livechat_json(continuation, session, headers)
-                    )
-                    metadata, chatdata =  self._parser.parse( livechat_json )
-                    timeout = metadata['timeoutMs']/1000
-                    chat_component = {
-                        "video_id" : self.video_id,
-                        "timeout"  : timeout,
-                        "chatdata" : chatdata
-                    }
-                    time_mark =time.time()
-                    if self._direct_mode:
-                        await self._callback(
-                            self.processor.process([chat_component])
-                            )
-                    else:
-                        await self._buffer.put(chat_component)
-                    diff_time = timeout - (time.time()-time_mark)
-                    await asyncio.sleep(diff_time)       
-                    continuation = metadata.get('continuation')  
-        except ChatParseException as e:
-            self.terminate()
-            logger.error(f"{str(e)}（video_id:\"{self.video_id}\"）")
-            return            
-        except (TypeError , json.JSONDecodeError) :
-            self.terminate()
-            logger.error(f"{traceback.format_exc(limit = -1)}")
-            return
-        
-        logger.debug(f"[{self.video_id}]チャット取得を終了しました。")
-        self.terminate()
-
-    async def _get_livechat_json(self, continuation, session, headers):
-        '''
-        チャットデータが格納されたjsonデータを取得する。
-        '''
-        continuation = urllib.parse.quote(continuation)
-        livechat_json = None
-        status_code = 0
-        url =(
-            f"https://www.youtube.com/live_chat_replay/get_live_chat_replay?"
-            f"continuation={continuation}&pbj=1")
-        for _ in range(MAX_RETRY + 1):
-            async with session.get(url ,headers = headers) as resp:
-                try:
-                    text = await resp.text()
-                    status_code = resp.status
-                    livechat_json = json.loads(text)
-                    break
-                except (ClientConnectorError,json.JSONDecodeError) :
-                    await asyncio.sleep(1)
-                    continue
-        else:
-            logger.error(f"[{self.video_id}]"
-                    f"Exceeded retry count. status_code={status_code}")
-            return None
-        return livechat_json
-  
-    async def _callback_loop(self,callback):
-        """ コンストラクタでcallbackを指定している場合、バックグラウンドで
-        callbackに指定された関数に一定間隔でチャットデータを投げる。        
-        
-        Parameter
-        ---------
-        callback : func
-            加工済みのチャットデータを渡す先の関数。
-        """
-        while self.is_alive():
-            items = await self._buffer.get()
-            data = self.processor.process(items)
-            await callback(data)
-
-    async def get(self):
-        """ bufferからデータを取り出し、processorに投げ、
-        加工済みのチャットデータを返す。
-        
-        Returns
-             : Processorによって加工されたチャットデータ
-        """
-        if self._callback is None:
-            items = await self._buffer.get()
-            return  self.processor.process(items)
-        raise IllegalFunctionCall(
-            "既にcallbackを登録済みのため、get()は実行できません。")
-
-    def pause(self):
-        if self._callback is None:
-            return
-        if not self._pauser.empty():
-            self._pauser.get_nowait()
-
-    def resume(self):
-        if self._callback is None:
-            return
-        if self._pauser.empty():
-            self._pauser.put_nowait(None)
-        
-    def is_alive(self):
-        return self._is_alive
-
-    def finish(self,sender):
-        '''Listener終了時のコールバック'''
-        try: 
-            self.terminate()
-        except CancelledError:
-            logger.debug(f'[{self.video_id}]cancelled:{sender}')
-
-    def terminate(self):
-        '''
-        Listenerを終了する。
-        '''
-        self._is_alive = False
-        if self._direct_mode == False:
-            #bufferにダミーオブジェクトを入れてis_alive()を判定させる
-            self._buffer.put_nowait({'chatdata':'','timeout':1}) 
-        logger.info(f'[{self.video_id}]終了しました')
-  
-    @classmethod
-    def _set_exception_handler(cls, handler):
-        loop = asyncio.get_event_loop()
-        loop.set_exception_handler(handler)
-    
-    @classmethod
-    def _handle_exception(cls, loop, context):
-        if not isinstance(context["exception"],CancelledError):
-            logger.error(f"Caught exception: {context}")
-        loop= asyncio.get_event_loop()
-        loop.create_task(cls.shutdown(None,None,None))
-
-    @classmethod
-    async def shutdown(cls, event, sig = None, handler=None):
-        logger.debug("シャットダウンしています")
-        tasks = [t for t in asyncio.all_tasks() if t is not
-        asyncio.current_task()]
-        [task.cancel() for task in tasks]
-
-        logger.debug(f"残っているタスクを終了しています")
-        await asyncio.gather(*tasks,return_exceptions=True)
-        loop = asyncio.get_event_loop()
-        loop.stop()
--- a/pytchat/core_multithread/buffer.py
+++ b/pytchat/core_multithread/buffer.py
@@ -1,31 +1,40 @@

 import queue

+
 class Buffer(queue.Queue):
    '''
-    チャットデータを格納するバッファの役割を持つFIFOキュー
+    Buffer for storing chat data.

    Parameter
    ---------
-    max_size : int
-        格納するチャットブロックの最大個数。0の場合は無限。
-        最大値を超える場合は古いチャットブロックから破棄される。
+    maxsize : int
+        Maximum number of chat blocks to be stored.
+        If it exceeds the maximum, the oldest chat block will be discarded.
    '''
-    def __init__(self,maxsize = 0):
+
+    def __init__(self, maxsize=0):
        super().__init__(maxsize=maxsize)
-    
-    def put(self,item):
+
+    def put(self, item):
        if item is None:
-            return 
+            return
        if super().full():
            super().get_nowait()
        else:
            super().put(item)
-            
+
+    def put_nowait(self, item):
+        if item is None:
+            return
+        if super().full():
+            super().get_nowait()
+        else:
+            super().put_nowait(item)

    def get(self):
        ret = []
        ret.append(super().get())
        while not super().empty():
            ret.append(super().get())
-        return ret
+        return ret
--- a/pytchat/core_multithread/livechat.py
+++ b/pytchat/core_multithread/livechat.py
@@ -1,92 +1,94 @@
-import requests
-import datetime
+import httpx
 import json
-import random
 import signal
 import time
 import traceback
-import urllib.parse
 from concurrent.futures import CancelledError, ThreadPoolExecutor
 from queue import Queue
+from threading import Event
 from .buffer import Buffer
 from ..parser.live import Parser
 from .. import config
-from ..exceptions  import ChatParseException,IllegalFunctionCall
-from ..paramgen    import liveparam, arcparam
+from .. import exceptions
+from .. import util
+from ..paramgen import liveparam, arcparam
 from ..processors.default.processor import DefaultProcessor
 from ..processors.combinator import Combinator

-logger = config.logger(__name__)
 headers = config.headers
 MAX_RETRY = 10


 class LiveChat:
-    ''' スレッドプールを利用してYouTubeのライブ配信のチャットデータを取得する
+    '''
+    LiveChat object fetches chat data and stores them
+    in a buffer with ThreadpoolExecutor.

    Parameter
    ---------
    video_id : str
-        動画ID
-    
+
    seektime : int
-        （ライブチャット取得時は無視）
-        取得開始するアーカイブ済みチャットの経過時間(秒）
-        マイナス値を指定した場合は、配信開始前のチャットも取得する。
+        start position of fetching chat (seconds).
+        This option is valid for archived chat only.
+        If negative value, chat data posted before the start of the broadcast
+        will be retrieved as well.

    processor : ChatProcessor
-        チャットデータを加工するオブジェクト

-    buffer : Buffer(maxsize:20[default])
-        チャットデータchat_componentを格納するバッファ。
-        maxsize : 格納できるchat_componentの個数
-        default値20個。1個で約5~10秒分。
+    buffer : Buffer
+        buffer of chat data fetched background.

    interruptable : bool
-        Ctrl+Cによる処理中断を行うかどうか。
+        Allows keyboard interrupts.
+        Set this parameter to False if your own threading program causes
+        the problem.

    callback : func
-        _listen()関数から一定間隔で自動的に呼びだす関数。
+        function called periodically from _listen().

    done_callback : func
-        listener終了時に呼び出すコールバック。
+        function called when listener ends.

    direct_mode : bool
-        Trueの場合、bufferを使わずにcallbackを呼ぶ。
-        Trueの場合、callbackの設定が必須
-        (設定していない場合IllegalFunctionCall例外を発生させる）  
+        If True, invoke specified callback function without using buffer.
+        callback is required. If not, IllegalFunctionCall will be raised.

-    force_replay : bool  
-        Trueの場合、ライブチャットが取得できる場合であっても
-        強制的にアーカイブ済みチャットを取得する。
+    force_replay : bool
+        force to fetch archived chat data, even if specified video is live.

    topchat_only : bool
-        Trueの場合、上位チャットのみ取得する。
-        
+        If True, get only top chat.
+
+    replay_continuation : str
+        If this parameter is not None, the processor will attempt to get chat data from continuation.
+        This parameter is only allowed in archived mode.
+
    Attributes
    ---------
    _executor : ThreadPoolExecutor
-        チャットデータ取得ループ（_listen）用のスレッド
+        This is used for _listen() loop.

    _is_alive : bool
-        チャット取得を停止するためのフラグ
+        Flag to stop getting chat.
    '''

    _setup_finished = False
-    #チャット監視中のListenerのリスト
-    _listeners= []
+
    def __init__(self, video_id,
-                seektime = 0,
-                processor = DefaultProcessor(),
-                buffer = None,
-                interruptable = True,
-                callback = None,
-                done_callback = None,
-                direct_mode = False,
-                force_replay = False,
-                topchat_only  = False
-                ):
-        self.video_id  = video_id
+                 seektime=-1,
+                 processor=DefaultProcessor(),
+                 buffer=None,
+                 interruptable=True,
+                 callback=None,
+                 done_callback=None,
+                 direct_mode=False,
+                 force_replay=False,
+                 topchat_only=False,
+                 logger=config.logger(__name__),
+                 replay_continuation=None
+                 ):
+        self._video_id = util.extract_video_id(video_id)
        self.seektime = seektime
        if isinstance(processor, tuple):
            self.processor = Combinator(processor)
@@ -97,56 +99,61 @@ class LiveChat:
        self._done_callback = done_callback
        self._executor = ThreadPoolExecutor(max_workers=2)
        self._direct_mode = direct_mode
-        self._is_alive   = True
-        self._is_replay = force_replay
-        self._parser = Parser(is_replay = self._is_replay)
+        self._is_alive = True
+        self._is_replay = force_replay or (replay_continuation is not None)
+        self._parser = Parser(is_replay=self._is_replay)
        self._pauser = Queue()
        self._pauser.put_nowait(None)
-        self._setup()
-        self._first_fetch = True
-        self._fetch_url = "live_chat/get_live_chat?continuation="
+        self._first_fetch = replay_continuation is None
+        self._fetch_url = config._sml if replay_continuation is None else config._smr
        self._topchat_only = topchat_only
-        if not LiveChat._setup_finished:
-            LiveChat._setup_finished = True
-            if interruptable:
-                signal.signal(signal.SIGINT,  (lambda a, b:  
-                (LiveChat.shutdown(None,signal.SIGINT,b))
-                ))
-        LiveChat._listeners.append(self)
+        self._dat = ''
+        self._last_offset_ms = 0
+        self._logger = logger
+        self._event = Event()
+        self.continuation = replay_continuation
+
+        self.exception = None
+        if interruptable:
+            signal.signal(signal.SIGINT, lambda a, b: self.terminate())
+        self._setup()

    def _setup(self):
-        #logger.debug("setup")
-        #direct modeがTrueでcallback未設定の場合例外発生。
+        # An exception is raised when direct mode is true and no callback is set.
        if self._direct_mode:
            if self._callback is None:
-                raise IllegalFunctionCall(
+                raise exceptions.IllegalFunctionCall(
                    "When direct_mode=True, callback parameter is required.")
        else:
-            #direct modeがFalseでbufferが未設定ならばデフォルトのbufferを作成
+            # Create a default buffer if `direct_mode` is False and buffer is not set.
            if self._buffer is None:
-                self._buffer = Buffer(maxsize = 20)
-                #callbackが指定されている場合はcallbackを呼ぶループタスクを作成
+                self._buffer = Buffer(maxsize=20)
+                # Create a loop task to call callback if the `callback` param is specified.
            if self._callback is None:
-                pass 
+                pass
            else:
-                #callbackを呼ぶループタスクの開始
-                self._executor.submit(self._callback_loop,self._callback)
-        #_listenループタスクの開始
-        listen_task = self._executor.submit(self._startlisten)
-        #add_done_callbackの登録
+                # Start a loop task calling callback function.
+                self._executor.submit(self._callback_loop, self._callback)
+        # Start a loop task for _listen()
+        self.listen_task = self._executor.submit(self._startlisten)
+        # Register add_done_callback
        if self._done_callback is None:
-            listen_task.add_done_callback(self.finish)
+            self.listen_task.add_done_callback(self._finish)
        else:
-            listen_task.add_done_callback(self._done_callback)
+            self.listen_task.add_done_callback(self._done_callback)

    def _startlisten(self):
-        time.sleep(0.1)  #sleep shortly to prohibit skipping fetching data
+        time.sleep(0.1)  # sleep shortly to prohibit skipping fetching data
        """Fetch first continuation parameter,
        create and start _listen loop.
        """
-        initial_continuation = liveparam.getparam(self.video_id,3)
-        self._listen(initial_continuation)
-   
+        if not self.continuation:
+            self.continuation = liveparam.getparam(
+                self._video_id,
+                channel_id=util.get_channelid(httpx.Client(http2=True), self._video_id),
+                past_sec=3)
+        self._listen(self.continuation)
+
    def _listen(self, continuation):
        ''' Fetch chat data and store them into buffer,
        get next continuaiton parameter and loop.
@@ -157,37 +164,41 @@ class LiveChat:
            parameter for next chat data
        '''
        try:
-            with requests.Session() as session:
+            with httpx.Client(http2=True) as client:
                while(continuation and self._is_alive):
                    continuation = self._check_pause(continuation)
-                    contents = self._get_contents(
-                        continuation, session, headers)
-                    metadata, chatdata =  self._parser.parse(contents)
-
-                    timeout = metadata['timeoutMs']/1000
+                    contents = self._get_contents(continuation, client, headers)
+                    metadata, chatdata = self._parser.parse(contents)
+                    continuation = metadata.get('continuation')
+                    if continuation:
+                        self.continuation = continuation
+                    timeout = metadata['timeoutMs'] / 1000
                    chat_component = {
-                        "video_id" : self.video_id,
-                        "timeout"  : timeout,
-                        "chatdata" : chatdata
+                        "video_id": self._video_id,
+                        "timeout": timeout,
+                        "chatdata": chatdata
                    }
-                    time_mark =time.time()
+                    time_mark = time.time()
                    if self._direct_mode:
-                        self._callback(
-                            self.processor.process([chat_component])
-                            )
+                        processed_chat = self.processor.process(
+                            [chat_component])
+                        if isinstance(processed_chat, tuple):
+                            self._callback(*processed_chat)
+                        else:
+                            self._callback(processed_chat)
                    else:
                        self._buffer.put(chat_component)
-                    diff_time = timeout - (time.time()-time_mark)
-                    time.sleep(diff_time if diff_time > 0 else 0)        
-                    continuation = metadata.get('continuation')  
-        except ChatParseException as e:
-            logger.debug(f"[{self.video_id}]{str(e)}")
-            return            
-        except (TypeError , json.JSONDecodeError) :
-            logger.error(f"{traceback.format_exc(limit = -1)}")
-            return
-        
-        logger.debug(f"[{self.video_id}]finished fetching chat.")
+                    diff_time = timeout - (time.time() - time_mark)
+                    self._event.wait(diff_time if diff_time > 0 else 0)
+                    self._last_offset_ms = metadata.get('last_offset_ms', 0)
+        except exceptions.ChatParseException as e:
+            self._logger.debug(f"[{self._video_id}]{str(e)}")
+            raise
+        except Exception:
+            self._logger.error(f"{traceback.format_exc(limit=-1)}")
+            raise
+
+        self._logger.debug(f"[{self._video_id}] finished fetching chat.")

    def _check_pause(self, continuation):
        if self._pauser.empty():
@@ -198,83 +209,101 @@ class LiveChat:
            '''
            self._pauser.put_nowait(None)
            if not self._is_replay:
-                continuation = liveparam.getparam(self.video_id,3)
+                continuation = liveparam.getparam(
+                    self._video_id, channel_id=util.get_channelid(httpx.Client(http2=True), self._video_id),
+                    past_sec=3, topchat_only=self._topchat_only)
+
        return continuation

-    def _get_contents(self, continuation, session, headers):
-        '''Get 'contents' dict from livechat json.
-           If contents is None at first fetching, 
+    def _get_contents(self, continuation, client, headers):
+        '''Get 'continuationContents' from livechat json.
+           If contents is None at first fetching,
           try to fetch archive chat data.

          Return:
          -------
-            'contents' dict which includes metadata & chatdata.
+            'continuationContents' which includes metadata & chat data.
        '''
-        livechat_json = ( 
-            self._get_livechat_json(continuation, session, headers)
-        )
-        contents = self._parser.get_contents(livechat_json)
+        livechat_json = self._get_livechat_json(continuation, client, replay=self._is_replay, offset_ms=self._last_offset_ms)
+        contents, dat = self._parser.get_contents(livechat_json)
+        if self._dat == '' and dat:
+            self._dat = dat
        if self._first_fetch:
            if contents is None or self._is_replay:
                '''Try to fetch archive chat data.'''
                self._parser.is_replay = True
-                self._fetch_url = "live_chat_replay/get_live_chat_replay?continuation="
-                continuation = arcparam.getparam(self.video_id, self.seektime)
-                livechat_json = ( self._get_livechat_json(
-                    continuation, session, headers))
-                contents = self._parser.get_contents(livechat_json)
+                self._fetch_url = config._smr
+                continuation = arcparam.getparam(
+                    self._video_id, self.seektime, self._topchat_only, util.get_channelid(client, self._video_id))
+                livechat_json = (self._get_livechat_json(
+                                 continuation, client, replay=True, offset_ms=self.seektime * 1000))
+                reload_continuation = self._parser.reload_continuation(
+                    self._parser.get_contents(livechat_json)[0])
+                if reload_continuation:
+                    livechat_json = (self._get_livechat_json(
+                        reload_continuation, client, headers))
+                contents, _ = self._parser.get_contents(livechat_json)
+                self._is_replay = True
            self._first_fetch = False
        return contents

-    def _get_livechat_json(self, continuation, session, headers):
+    def _get_livechat_json(self, continuation, client, replay: bool, offset_ms: int = 0):
        '''
        Get json which includes chat data.
        '''
-        continuation = urllib.parse.quote(continuation)
        livechat_json = None
-        status_code = 0
-        url =f"https://www.youtube.com/{self._fetch_url}{continuation}&pbj=1"
+        if offset_ms < 0:
+            offset_ms = 0
+        param = util.get_param(continuation, dat=self._dat, replay=replay, offsetms=offset_ms)
        for _ in range(MAX_RETRY + 1):
-            with session.get(url ,headers = headers) as resp:
-                try:
-                    text = resp.text
-                    livechat_json = json.loads(text)
-                    break
-                except json.JSONDecodeError :
-                    time.sleep(1)
-                    continue
+            try:
+                response = client.post(self._fetch_url, json=param)
+                livechat_json = response.json()
+                break
+            except (json.JSONDecodeError, httpx.HTTPError):
+                time.sleep(2)
+                continue
        else:
-            logger.error(f"[{self.video_id}]"
-                    f"Exceeded retry count. status_code={status_code}")
-            return None
+            self._logger.error(f"[{self._video_id}]"
+                               f"Exceeded retry count.")
+            raise exceptions.RetryExceedMaxCount()
        return livechat_json
-  
-    def _callback_loop(self,callback):
-        """ コンストラクタでcallbackを指定している場合、バックグラウンドで
-        callbackに指定された関数に一定間隔でチャットデータを投げる。        
-        
+
+    def _callback_loop(self, callback):
+        """ If a callback is specified in the constructor,
+        it throws chat data at regular intervals to the
+        function specified in the callback in the backgroun
+
        Parameter
        ---------
        callback : func
-            加工済みのチャットデータを渡す先の関数。
+            function to which the processed chat data is passed.
        """
        while self.is_alive():
            items = self._buffer.get()
-            data = self.processor.process(items)
-            callback(data)
+            processed_chat = self.processor.process(items)
+            if isinstance(processed_chat, tuple):
+                self._callback(*processed_chat)
+            else:
+                self._callback(processed_chat)

    def get(self):
-        """ bufferからデータを取り出し、processorに投げ、
-        加工済みのチャットデータを返す。
-        
+        """
+        Retrieves data from the buffer,
+        throws it to the processor,
+        and returns the processed chat data.
+
        Returns
-             : Processorによって加工されたチャットデータ
+             : Chat data processed by the Processor
        """
        if self._callback is None:
-            items = self._buffer.get()
-            return  self.processor.process(items)
-        raise IllegalFunctionCall(
-            "既にcallbackを登録済みのため、get()は実行できません。")
+            if self.is_alive():
+                items = self._buffer.get()
+                return self.processor.process(items)
+            else:
+                return []
+        raise exceptions.IllegalFunctionCall(
+            "Callback parameter is already set, so get() cannot be performed.")

    def is_replay(self):
        return self._is_replay
@@ -290,29 +319,36 @@ class LiveChat:
            return
        if self._pauser.empty():
            self._pauser.put_nowait(None)
-        
+
    def is_alive(self):
        return self._is_alive

-    def finish(self,sender):
-        '''Listener終了時のコールバック'''
-        try: 
-            self.terminate()
+    def _finish(self, sender):
+        '''Called when the _listen() task finished.'''
+        try:
+            self._task_finished()
        except CancelledError:
-            logger.debug(f'[{self.video_id}]cancelled:{sender}')
+            self._logger.debug(f'[{self._video_id}] cancelled:{sender}')

    def terminate(self):
-        '''
-        Listenerを終了する。
-        '''
+        if self._pauser.empty():
+            self._pauser.put_nowait(None)
        self._is_alive = False
-        if self._direct_mode == False:
-            #bufferにダミーオブジェクトを入れてis_alive()を判定させる
-            self._buffer.put({'chatdata':'','timeout':0}) 
-        logger.info(f'[{self.video_id}]finished.')
-  
-    @classmethod
-    def shutdown(cls, event, sig = None, handler=None):
-        logger.debug("shutdown...")
-        for t in LiveChat._listeners:
-            t._is_alive = False
+        self._buffer.put({})
+        self._event.set()
+        self.processor.finalize()
+
+    def _task_finished(self):
+        if self.is_alive():
+            self.terminate()
+        try:
+            self.listen_task.result()
+        except Exception as e:
+            self.exception = e
+            if not isinstance(e, exceptions.ChatParseException):
+                self._logger.error(f'Internal exception - {type(e)}{str(e)}')
+        self._logger.info(f'[{self._video_id}] finished.')
+
+    def raise_for_status(self):
+        if self.exception is not None:
+            raise self.exception
--- a/pytchat/core_multithread/replaychat.py
+++ b/pytchat/core_multithread/replaychat.py
@@ -1,309 +0,0 @@
-import requests
-import datetime
-import json
-import random
-import signal
-import time
-import traceback
-import urllib.parse
-import warnings
-from concurrent.futures import CancelledError, ThreadPoolExecutor
-from queue import Queue
-from .buffer import Buffer
-from ..parser.replay import Parser
-from .. import config
-from ..exceptions  import ChatParseException,IllegalFunctionCall
-from ..paramgen    import arcparam
-from ..processors.default.processor import DefaultProcessor
-from ..processors.combinator import Combinator
-
-logger = config.logger(__name__)
-headers = config.headers
-MAX_RETRY = 10
-
-
-class ReplayChat:
-    '''
-    ### -----------------------------------------------------------
-    ### [Warning] ReplayChat is integrated into LiveChat.
-    ### This class is deprecated and will be removed at v0.0.5.0.
-    ### ReplayChatはLiveChatに統合しました。
-    ### このクラスはv0.0.5.0で廃止予定です。
-    ### -----------------------------------------------------------
-
-     スレッドプールを利用してYouTubeのライブ配信のチャットデータを取得する
-
-    Parameter
-    ---------
-    video_id : str
-        動画ID
-
-    seektime : int
-        リプレイするチャットデータの開始時間（秒）
-
-    processor : ChatProcessor
-        チャットデータを加工するオブジェクト
-
-    buffer : Buffer(maxsize:20[default])
-        チャットデータchat_componentを格納するバッファ。
-        maxsize : 格納できるchat_componentの個数
-        default値20個。1個で約5~10秒分。
-
-    interruptable : bool
-        Ctrl+Cによる処理中断を行うかどうか。
-
-    callback : func
-        _listen()関数から一定間隔で自動的に呼びだす関数。
-
-    done_callback : func
-        listener終了時に呼び出すコールバック。
-
-    direct_mode : bool
-        Trueの場合、bufferを使わずにcallbackを呼ぶ。
-        Trueの場合、callbackの設定が必須
-        (設定していない場合IllegalFunctionCall例外を発生させる）  
-
-    Attributes
-    ---------
-    _executor : ThreadPoolExecutor
-        チャットデータ取得ループ（_listen）用のスレッド
-
-    _is_alive : bool
-        チャット取得を停止するためのフラグ
-    '''
-
-    _setup_finished = False
-
-    #チャット監視中のListenerのリスト
-    _listeners= []
-
-    def __init__(self, video_id,
-                seektime = 0,
-                processor = DefaultProcessor(),
-                buffer = None,
-                interruptable = True,
-                callback = None,
-                done_callback = None,
-                direct_mode = False
-                ):
-
-        warnings.warn(""
-        f"\n{'-'*60}\n[WARNING] ReplayChat is integrated into LiveChat.\n"
-        f"{' '*5}This is deprecated and will be removed at v0.0.5.0.\n"
-        f"{'-'*60}\n"
-        )
-        self.video_id  = video_id
-        self.seektime = seektime
-        if isinstance(processor, tuple):
-            self.processor = Combinator(processor)
-        else:
-            self.processor = processor
-        self._buffer = buffer
-        self._callback = callback
-        self._done_callback = done_callback
-        self._executor = ThreadPoolExecutor(max_workers=2)
-        self._direct_mode = direct_mode
-        self._is_alive   = True
-        self._parser = Parser()
-        self._pauser = Queue()
-        self._pauser.put_nowait(None)
-       
-        self._setup()
-
-        if not ReplayChat._setup_finished:
-            ReplayChat._setup_finished = True
-            if interruptable:
-                signal.signal(signal.SIGINT,  (lambda a, b:  
-                (ReplayChat.shutdown(None,signal.SIGINT,b))
-                ))
-        ReplayChat._listeners.append(self)
-
-    def _setup(self):
-        #direct modeがTrueでcallback未設定の場合例外発生。
-        if self._direct_mode:
-            if self._callback is None:
-                raise IllegalFunctionCall(
-                    "direct_mode=Trueの場合callbackの設定が必須です。")
-        else:
-            #direct modeがFalseでbufferが未設定ならばデフォルトのbufferを作成
-            if self._buffer is None:
-                self._buffer = Buffer(maxsize = 20)
-                #callbackが指定されている場合はcallbackを呼ぶループタスクを作成
-            if self._callback is None:
-                pass 
-            else:
-                #callbackを呼ぶループタスクの開始
-                self._executor.submit(self._callback_loop,self._callback)
-        #_listenループタスクの開始
-        listen_task = self._executor.submit(self._startlisten)
-        #add_done_callbackの登録
-        if self._done_callback is None:
-            listen_task.add_done_callback(self.finish)
-        else:
-            listen_task.add_done_callback(self._done_callback)
-
-    def _startlisten(self):
-        """最初のcontinuationパラメータを取得し、
-        _listenループのタスクを作成し開始する
-        """
-        initial_continuation = self._get_initial_continuation()
-        if initial_continuation is None:
-            self.terminate()
-            logger.debug(f"[{self.video_id}]No initial continuation.")
-            return
-        self._listen(initial_continuation)
-   
-    def _get_initial_continuation(self):
-        ''' チャットデータ取得に必要な最初のcontinuationを取得する。'''
-        try:    
-            initial_continuation = arcparam.getparam(self.video_id,self.seektime)
-        except ChatParseException as e:
-            self.terminate()
-            logger.debug(f"[{self.video_id}]Error:{str(e)}")
-            return
-        except KeyError:
-            logger.debug(f"[{self.video_id}]KeyError:"
-                         f"{traceback.format_exc(limit = -1)}")
-            self.terminate()
-            return
-        return initial_continuation
-
-    def _listen(self, continuation):
-        ''' continuationに紐付いたチャットデータを取得し
-        BUfferにチャットデータを格納、
-        次のcontinuaitonを取得してループする
-
-        Parameter
-        ---------
-        continuation : str
-            次のチャットデータ取得に必要なパラメータ
-        '''
-        try:
-            with requests.Session() as session:
-                while(continuation and self._is_alive):
-                    if self._pauser.empty():
-                        #pause
-                        self._pauser.get()
-                        #resume
-                        #prohibit from blocking by putting None into _pauser.
-                        self._pauser.put_nowait(None)
-                    livechat_json = (
-                      self._get_livechat_json(continuation, session, headers)
-                    )
-                    metadata, chatdata =  self._parser.parse( livechat_json )
-                    timeout = metadata['timeoutMs']/1000
-                    chat_component = {
-                        "video_id" : self.video_id,
-                        "timeout"  : timeout,
-                        "chatdata" : chatdata
-                    }
-                    time_mark =time.time()
-                    if self._direct_mode:
-                        self._callback(
-                            self.processor.process([chat_component])
-                            )
-                    else:
-                        self._buffer.put(chat_component)
-                    diff_time = timeout - (time.time()-time_mark)
-                    if diff_time < 0 : diff_time=0
-                    time.sleep(diff_time)        
-                    continuation = metadata.get('continuation')  
-        except ChatParseException as e:
-            self.terminate()
-            logger.error(f"{str(e)}（video_id:\"{self.video_id}\"）")
-            return            
-        except (TypeError , json.JSONDecodeError) :
-            self.terminate()
-            logger.error(f"{traceback.format_exc(limit = -1)}")
-            return
-        
-        logger.debug(f"[{self.video_id}]チャット取得を終了しました。")
-
-    def _get_livechat_json(self, continuation, session, headers):
-        '''
-        チャットデータが格納されたjsonデータを取得する。
-        '''
-        continuation = urllib.parse.quote(continuation)
-        livechat_json = None
-        status_code = 0
-        url =(
-            f"https://www.youtube.com/live_chat_replay/get_live_chat_replay?"
-            f"continuation={continuation}&pbj=1")
-        for _ in range(MAX_RETRY + 1):
-            with session.get(url ,headers = headers) as resp:
-                try:
-                    text = resp.text
-                    status_code = resp.status_code
-                    livechat_json = json.loads(text)
-                    break
-                except json.JSONDecodeError :
-                    time.sleep(1)
-                    continue
-        else:
-            logger.error(f"[{self.video_id}]"
-                    f"Exceeded retry count. status_code={status_code}")
-            self.terminate()
-            return None
-        return livechat_json
-  
-    def _callback_loop(self,callback):
-        """ コンストラクタでcallbackを指定している場合、バックグラウンドで
-        callbackに指定された関数に一定間隔でチャットデータを投げる。        
-        
-        Parameter
-        ---------
-        callback : func
-            加工済みのチャットデータを渡す先の関数。
-        """
-        while self.is_alive():
-            items = self._buffer.get()
-            data = self.processor.process(items)
-            callback(data)
-
-    def get(self):
-        """ bufferからデータを取り出し、processorに投げ、
-        加工済みのチャットデータを返す。
-        
-        Returns
-             : Processorによって加工されたチャットデータ
-        """
-        if self._callback is None:
-            items = self._buffer.get()
-            return  self.processor.process(items)
-        raise IllegalFunctionCall(
-            "既にcallbackを登録済みのため、get()は実行できません。")
-
-    def pause(self):
-        if not self._pauser.empty():
-            self._pauser.get()
-
-    def resume(self):
-        if self._pauser.empty():
-            self._pauser.put_nowait(None)
-        
-
-    def is_alive(self):
-        return self._is_alive
-
-    def finish(self,sender):
-        '''Listener終了時のコールバック'''
-        try: 
-            self.terminate()
-        except RuntimeError:
-            logger.debug(f'[{self.video_id}]cancelled:{sender}')
-
-    def terminate(self):
-        '''
-        Listenerを終了する。
-        '''
-        self._is_alive = False
-        if self._direct_mode == False:
-            #bufferにダミーオブジェクトを入れてis_alive()を判定させる
-            self._buffer.put({'chatdata':'','timeout':1}) 
-        logger.info(f'[{self.video_id}]終了しました')
-  
-    @classmethod
-    def shutdown(cls, event, sig = None, handler=None):
-        logger.debug("シャットダウンしています")
-        for t in ReplayChat._listeners:
-            t._is_alive = False
--- a/pytchat/exceptions.py
+++ b/pytchat/exceptions.py
@@ -1,43 +1,81 @@
 class ChatParseException(Exception):
    '''
-    チャットデータをパースするライブラリが投げる例外の基底クラス
+    Base exception thrown by the parser
    '''
    pass

-class NoYtinitialdataException(ChatParseException):
-    '''
-    配信ページ内にチャットデータurlが見つからないときに投げる例外
-    '''
-    pass

 class ResponseContextError(ChatParseException):
    '''
-    配信ページでチャットデータ無効の時に投げる例外
-    '''
-    pass
-
-class NoLivechatRendererException(ChatParseException):
-    '''
-    チャットデータのJSON中にlivechatRendererがない時に投げる例外
+    Thrown when chat data is invalid.
    '''
    pass


-class NoContentsException(ChatParseException):
+class NoContents(ChatParseException):
    '''
-    チャットデータのJSON中にContinuationContentsがない時に投げる例外
+    Thrown when ContinuationContents is missing in JSON.
    '''
    pass

-class NoContinuationsException(ChatParseException):
+
+class NoContinuation(ChatParseException):
    '''
-    チャットデータのContinuationContents中にcontinuationがない時に投げる例外
+    Thrown when continuation is missing in ContinuationContents.
    '''
    pass

+
 class IllegalFunctionCall(Exception):
    '''
-    set_callback()を実行済みにもかかわらず
-    get()を呼び出した場合の例外
+    Thrown when get() is called even though
+    set_callback() has been executed.
    '''
    pass
+
+
+class InvalidVideoIdException(Exception):
+    '''
+    Thrown when the video_id is not exist (VideoInfo).
+    '''
+    def __init__(self, doc):
+        self.msg = "InvalidVideoIdException"
+        self.doc = doc
+
+
+class UnknownConnectionError(Exception):
+    pass
+
+
+class RetryExceedMaxCount(Exception):
+    '''
+    Thrown when the number of retries exceeds the maximum value.
+    '''
+    pass
+
+
+class ChatDataFinished(ChatParseException):
+    pass
+
+
+class ReceivedUnknownContinuation(ChatParseException):
+    pass
+
+
+class FailedExtractContinuation(ChatDataFinished):
+    pass
+
+
+class VideoInfoParseError(Exception):
+    '''
+    Base exception when parsing video info.
+    '''
+
+
+class PatternUnmatchError(VideoInfoParseError):
+    '''
+    Thrown when failed to parse video info with unmatched pattern.
+    '''
+    def __init__(self, doc=''):
+        self.msg = "PatternUnmatchError"
+        self.doc = doc
--- a/pytchat/paramgen/arcparam.py
+++ b/pytchat/paramgen/arcparam.py
@@ -1,108 +1,37 @@
+from . import enc
 from base64 import urlsafe_b64encode as b64enc
-from functools import reduce
-import calendar, datetime, pytz
-import math
-import random
-import urllib.parse
+from urllib.parse import quote

-'''
-Generate continuation parameter of youtube replay chat.

-Author: taizan-hokuto (2019) @taizan205
+def _header(video_id, channel_id) -> str:
+    S1_3 = enc.rs(1, video_id)
+    S1_5 = enc.rs(1, channel_id) + enc.rs(2, video_id)
+    S1 = enc.rs(3, S1_3) + enc.rs(5, S1_5)
+    S3 = enc.rs(48687757, enc.rs(1, video_id))
+    header_replay = enc.rs(1, S1) + enc.rs(3, S3) + enc.nm(4, 1)
+    return b64enc(header_replay)

-ver 0.0.1 2019.10.05
-'''

-def _gen_vid(video_id):
-    """generate video_id parameter.
-    Parameter
-    ---------
-        video_id : str
-
-    Return
-    ---------
-    byte[] : base64 encoded video_id parameter.
-    """
-    header_magic = b'\x0A\x0F\x1A\x0D\x0A'
-    header_id =  video_id.encode()
-    header_sep_1 = b'\x1A\x13\xEA\xA8\xDD\xB9\x01\x0D\x0A\x0B'
-    header_terminator = b'\x20\x01'
-
-    item = [
-        header_magic,
-        _nval(len(header_id)),
-        header_id,
-        header_sep_1,
-        header_id,
-        header_terminator
-    ]
-
-    return urllib.parse.quote(
-        b64enc(reduce(lambda x, y: x+y, item)).decode()
-    ).encode()
-
-def _nval(val):
-    """convert value to byte array"""
-    if val<0: raise ValueError
-    buf = b''
-    while val >> 7:
-        m = val & 0xFF | 0x80
-        buf += m.to_bytes(1,'big')
-        val >>= 7
-    buf += val.to_bytes(1,'big')
-    return buf
-
-def _build(video_id, seektime, topchat_only):
-    switch_01 = b'\x04' if topchat_only else b'\x01'
+def _build(video_id, seektime, topchat_only, channel_id) -> str:
+    chattype = 4 if topchat_only else 1
    if seektime < 0:
-        times =_nval(0)
-        switch = b'\x04'       
-    elif seektime == 0:  
-        times =_nval(1)
-        switch = b'\x03'       
-    else:
-        times =_nval(int(seektime*1000000))
-        switch = b'\x03'
-    parity = b'\x00'
+        seektime = 0
+    timestamp = int(seektime * 1000000)
+    header = enc.rs(3, _header(video_id, channel_id))
+    timestamp = enc.nm(5, timestamp)
+    s6 = enc.nm(6, 0)
+    s7 = enc.nm(7, 0)
+    s8 = enc.nm(8, 0)
+    s9 = enc.nm(9, 4)
+    s10 = enc.rs(10, enc.nm(4, 0))
+    chattype = enc.rs(14, enc.nm(1, 4))
+    s15 = enc.nm(15, 0)
+    entity = b''.join((header, timestamp, s6, s7, s8, s9, s10, chattype, s15))
+    continuation = enc.rs(156074452, entity)
+    return quote(b64enc(continuation).decode())

-    header_magic= b'\xA2\x9D\xB0\xD3\x04'
-    sep_0       = b'\x1A'
-    vid         = _gen_vid(video_id)
-    time_tag    = b'\x28'
-    timestamp1  = times
-    sep_1       = b'\x30\x00\x38\x00\x40\x00\x48'
-    sep_2       = b'\x52\x1C\x08\x00\x10\x00\x18\x00\x20\x00'
-    chkstr      = b'\x2A\x0E\x73\x74\x61\x74\x69\x63\x63\x68\x65\x63\x6B\x73\x75\x6D\x40'
-    sep_3       = b'\x00\x58\x03\x60'
-    sep_4       = b'\x68' + parity + b'\x72\x04\x08'
-    sep_5       = b'\x10' + parity + b'\x78\x00'
-    body = [
-        sep_0,
-        _nval(len(vid)),
-        vid,
-        time_tag,
-        timestamp1,
-        sep_1,
-        switch,
-        sep_2,
-        chkstr,
-        sep_3,
-        switch_01,
-        sep_4,
-        switch_01,
-        sep_5
-    ]

-    body = reduce(lambda x, y: x+y, body)
-    
-    return  urllib.parse.quote(
-                b64enc( header_magic +
-                        _nval(len(body)) +
-                        body
-                ).decode()
-            )
-
-def getparam(video_id, seektime = 0, topchat_only = False):
+def getparam(video_id, seektime=0, topchat_only=False, channel_id='') -> str:
    '''
    Parameter
    ---------
@@ -112,4 +41,4 @@ def getparam(video_id, seektime = 0, topchat_only = False):
    topchat_only : bool
        if True, fetch only 'top chat'
    '''
-    return _build(video_id, seektime, topchat_only)
+    return _build(video_id, seektime, topchat_only, channel_id)
--- a/pytchat/paramgen/enc.py
+++ b/pytchat/paramgen/enc.py
@@ -0,0 +1,24 @@
+def vn(val):
+    if val < 0:
+        raise ValueError
+    buf = b''
+    while val >> 7:
+        m = val & 0xFF | 0x80
+        buf += m.to_bytes(1, 'big')
+        val >>= 7
+    buf += val.to_bytes(1, 'big')
+    return buf
+
+
+def tp(a, b, ary):
+    return vn((b << 3) | a) + ary
+
+
+def rs(a, ary):
+    if isinstance(ary, str):
+        ary = ary.encode()
+    return tp(2, a, vn(len(ary)) + ary)
+
+
+def nm(a, ary):
+    return tp(0, a, vn(ary))
--- a/pytchat/paramgen/liveparam.py
+++ b/pytchat/paramgen/liveparam.py
@@ -1,161 +1,64 @@
-from base64 import urlsafe_b64encode as b64enc
-from functools import reduce
-import calendar, datetime, pytz
 import random
-import urllib.parse
+import time
+from . import enc
+from base64 import urlsafe_b64encode as b64enc
+from urllib.parse import quote

-'''
-Generate continuation parameter of youtube live chat.

-Author: taizan-hokuto (2019) @taizan205
+def _header(video_id, channel_id) -> str:
+    S1_3 = enc.rs(1, video_id)
+    S1_5 = enc.rs(1, channel_id) + enc.rs(2, video_id)
+    S1 = enc.rs(3, S1_3) + enc.rs(5, S1_5)
+    S3 = enc.rs(48687757, enc.rs(1, video_id))
+    header_replay = enc.rs(1, S1) + enc.rs(3, S3) + enc.nm(4, 1)
+    return b64enc(header_replay)

-ver 0.0.1 2019.10.05
-'''
-def _gen_vid(video_id):
-    """generate video_id parameter.
-    Parameter
-    ---------
-        video_id : str

-    Return
-    ---------
-    byte[] : base64 encoded video_id parameter.
-    """
-    header_magic = b'\x0A\x0F\x0A\x0D\x0A'
-    header_id =  video_id.encode()
-    header_sep_1 = b'\x1A'
-    header_sep_2 = b'\x43\xAA\xB9\xC1\xBD\x01\x3D\x0A'
-    header_suburl = ('https://www.youtube.com/live_chat?v='
-                    f'{video_id}&is_popout=1').encode()
-    header_terminator = b'\x20\x02'
+def _build(video_id, channel_id, ts1, ts2, ts3, ts4, ts5, topchat_only) -> str:
+    chattype = 4 if topchat_only else 1

-    item = [
-        header_magic,
-        _nval(len(header_id)),
-        header_id,
-        header_sep_1,
-        header_sep_2,
-        _nval(len(header_suburl)),
-        header_suburl,
-        header_terminator
-    ]
+    b1 = enc.nm(1, 0)
+    b2 = enc.nm(2, 0)
+    b3 = enc.nm(3, 0)
+    b4 = enc.nm(4, 0)
+    b7 = enc.rs(7, '')
+    b8 = enc.nm(8, 0)
+    b9 = enc.rs(9, '')
+    timestamp2 = enc.nm(10, ts2)
+    b11 = enc.nm(11, 3)
+    b15 = enc.nm(15, 0)

-    return urllib.parse.quote(
-        b64enc(reduce(lambda x, y: x+y, item)).decode()
-    ).encode()
+    header = enc.rs(3, _header(video_id, channel_id))
+    timestamp1 = enc.nm(5, ts1)
+    s6 = enc.nm(6, 0)
+    s7 = enc.nm(7, 0)
+    s8 = enc.nm(8, 1)
+    body = enc.rs(9, b''.join(
+        (b1, b2, b3, b4, b7, b8, b9, timestamp2, b11, b15)))
+    timestamp3 = enc.nm(10, ts3)
+    timestamp4 = enc.nm(11, ts4)
+    s13 = enc.nm(13, chattype)
+    chattype = enc.rs(16, enc.nm(1, chattype))
+    s17 = enc.nm(17, 0)
+    str19 = enc.rs(19, enc.nm(1, 0))
+    timestamp5 = enc.nm(20, ts5)
+    entity = b''.join((header, timestamp1, s6, s7, s8, body, timestamp3,
+                       timestamp4, s13, chattype, s17, str19, timestamp5))
+    continuation = enc.rs(119693434, entity)
+    return quote(b64enc(continuation).decode())

-def _tzparity(video_id,times):
-    t=0
-    for i,s in enumerate(video_id):
-        ss = ord(s)
-        if(ss % 2 == 0):
-            t += ss*(12-i)
-        else:
-            t ^= ss*i

-    return ((times^t) % 2).to_bytes(1,'big')
-
-def _nval(val):
-    """convert value to byte array"""
-    if val<0: raise ValueError
-    buf = b''
-    while val >> 7:
-        m = val & 0xFF | 0x80
-        buf += m.to_bytes(1,'big')
-        val >>= 7
-    buf += val.to_bytes(1,'big')
-    return buf
-
-def _build(video_id, _ts1, _ts2, _ts3, _ts4, _ts5, topchat_only):
-    #_short_type2
-    switch_01 = b'\x04' if topchat_only else b'\x01'
-    parity = _tzparity(video_id, _ts1^_ts2^_ts3^_ts4^_ts5)
-
-    header_magic= b'\xD2\x87\xCC\xC8\x03'
-    sep_0       = b'\x1A'
-    vid         = _gen_vid(video_id)
-    time_tag    = b'\x28'
-    timestamp1  = _nval(_ts1)
-    sep_1       = b'\x30\x00\x38\x00\x40\x02\x4A'
-    un_len      = b'\x2B'
-    sep_2       = b'\x08'+parity+b'\x10\x00\x18\x00\x20\x00'
-    chkstr      = b'\x2A\x0E\x73\x74\x61\x74\x69\x63\x63\x68\x65\x63\x6B\x73\x75\x6D'
-    sep_3       = b'\x3A\x00\x40\x00\x4A'
-    sep_4_len   = b'\x02'
-    sep_4       = b'\x08\x01'
-    ts_2_start  = b'\x50'
-    timestamp2  = _nval(_ts2)
-    ts_2_end    = b'\x58'
-    sep_5       = b'\x03'
-    ts_3_start  = b'\x50'
-    timestamp3  = _nval(_ts3)
-    ts_3_end    = b'\x58'
-    timestamp4  = _nval(_ts4)
-    sep_6       = b'\x68'
-    #switch
-    sep_7       = b'\x82\x01\x04\x08'
-    #switch
-    sep_8       = b'\x10\x00'
-    sep_9       = b'\x88\x01\x00\xA0\x01'
-    timestamp5  = _nval(_ts5)
-
-    body = [
-        sep_0,
-        _nval(len(vid)),
-        vid,
-        time_tag,
-        timestamp1,
-        sep_1,
-        un_len,
-        sep_2,
-        chkstr,
-        sep_3,
-        sep_4_len,
-        sep_4,
-        ts_2_start,
-        timestamp2,
-        ts_2_end,
-        sep_5,
-        ts_3_start,
-        timestamp3,
-        ts_3_end,
-        timestamp4,
-        sep_6,
-        switch_01,#
-        sep_7,
-        switch_01,#
-        sep_8,
-        sep_9,
-        timestamp5
-    ]
-
-    body = reduce(lambda x, y: x+y, body)
-    
-    return  urllib.parse.quote(
-                b64enc( header_magic +
-                        _nval(len(body)) +
-                        body
-                ).decode()
-            )
-
-    
 def _times(past_sec):
-    
-    def unixts_now():
-        now = datetime.datetime.now(pytz.utc)
-        return calendar.timegm(now.utctimetuple())
-
-    n = unixts_now()
-    
-    _ts1= n - random.uniform(0,1*3)    
-    _ts2= n - random.uniform(0.01,0.99)    
-    _ts3= n - past_sec + random.uniform(0,1)
-    _ts4= n - random.uniform(10*60,60*60)         
-    _ts5= n - random.uniform(0.01,0.99)
-    return list(map(lambda x:int(x*1000000),[_ts1,_ts2,_ts3,_ts4,_ts5]))
+    n = int(time.time())
+    _ts1 = n - random.uniform(0, 1 * 3)
+    _ts2 = n - random.uniform(0.01, 0.99)
+    _ts3 = n - past_sec + random.uniform(0, 1)
+    _ts4 = n - random.uniform(10 * 60, 60 * 60)
+    _ts5 = n - random.uniform(0.01, 0.99)
+    return list(map(lambda x: int(x * 1000000), [_ts1, _ts2, _ts3, _ts4, _ts5]))


-def getparam(video_id, past_sec = 0, topchat_only = False):
+def getparam(video_id, channel_id, past_sec=0, topchat_only=False) -> str:
    '''
    Parameter
    ---------
@@ -164,5 +67,4 @@ def getparam(video_id, past_sec = 0, topchat_only = False):
    topchat_only : bool
        if True, fetch only 'top chat'
    '''
-    return _build(video_id,*_times(past_sec),topchat_only)
-
+    return _build(video_id, channel_id, *_times(past_sec), topchat_only)
--- a/pytchat/parser/live.py
+++ b/pytchat/parser/live.py
@@ -4,32 +4,36 @@ pytchat.parser.live
 Parser of live chat JSON.
 """

-import json
-from .. import config
-from .. exceptions import ( 
-    ResponseContextError, 
-    NoContentsException, 
-    NoContinuationsException,
-    ChatParseException )
+from .. import exceptions


-logger = config.logger(__name__)
-
 class Parser:
-
-    __slots__ = ['is_replay']
+    '''
+    Parser of chat json.
    
-    def __init__(self, is_replay): 
+    Parameter
+    ----------
+    is_replay : bool
+
+    exception_holder : Object [default:Npne]
+        The object holding exceptions.
+        This is passed from the parent livechat object.
+    '''
+    __slots__ = ['is_replay', 'exception_holder']
+
+    def __init__(self, is_replay, exception_holder=None):
        self.is_replay = is_replay
+        self.exception_holder = exception_holder

    def get_contents(self, jsn):
-        if jsn is None: 
-            raise ChatParseException('Called with none JSON object.')
-        if jsn['response']['responseContext'].get('errors'):
-            raise ResponseContextError('The video_id would be wrong,'
-                'or video is deleted or private.')
-        contents=jsn['response'].get('continuationContents')
-        return contents
+        if jsn is None:
+            self.raise_exception(exceptions.IllegalFunctionCall('Called with none JSON object.'))
+        if jsn.get("responseContext", {}).get("errors"):
+            raise exceptions.ResponseContextError(
+                'The video_id would be wrong, or video is deleted or private.')
+        contents = jsn.get('continuationContents')
+        visitor_data = jsn.get("responseContext", {}).get("visitorData")
+        return contents, visitor_data

    def parse(self, contents):
        """
@@ -44,50 +48,75 @@ class Parser:
        + metadata : dict
         + timeout
         + video_id
-         + continuation           
+         + continuation
        + chatdata : List[dict]
        """

        if contents is None:
            '''Broadcasting end or cannot fetch chat stream'''
-            raise NoContentsException('Chat data stream is empty.')
+            self.raise_exception(exceptions.NoContents('Chat data stream is empty.'))

        cont = contents['liveChatContinuation']['continuations'][0]
        if cont is None:
-            raise NoContinuationsException('No Continuation')
-        metadata = (cont.get('invalidationContinuationData')  or
-                    cont.get('timedContinuationData')         or
-                    cont.get('reloadContinuationData')        or
-                    cont.get('liveChatReplayContinuationData')
+            self.raise_exception(exceptions.NoContinuation('No Continuation'))
+        metadata = (cont.get('invalidationContinuationData')
+                    or cont.get('timedContinuationData')
+                    or cont.get('reloadContinuationData')
+                    or cont.get('liveChatReplayContinuationData')
                    )
        if metadata is None:
            if cont.get("playerSeekContinuationData"):
-                raise ChatParseException('Finished chat data')
+                self.raise_exception(exceptions.ChatDataFinished('Finished chat data'))
            unknown = list(cont.keys())[0]
            if unknown:
-                logger.debug(f"Received unknown continuation type:{unknown}")
-                metadata = cont.get(unknown)
+                self.raise_exception(exceptions.ReceivedUnknownContinuation(
+                    f"Received unknown continuation type:{unknown}"))
            else:
-                raise ChatParseException('Cannot extract continuation data')
+                self.raise_exception(exceptions.FailedExtractContinuation('Cannot extract continuation data'))
        return self._create_data(metadata, contents)

-    def _create_data(self, metadata, contents):    
+    def reload_continuation(self, contents):
+        """
+        When `seektime == 0` or seektime is abbreviated ,
+        check if fetched chat json has no chat data.
+        If so, try to fetch playerSeekContinuationData.
+        This function must be run only first fetching.
+        """
+        if contents is None:
+            '''Broadcasting end or cannot fetch chat stream'''
+            self.raise_exception(exceptions.NoContents('Chat data stream is empty.'))
+        cont = contents['liveChatContinuation']['continuations'][0]
+
+        if cont.get("liveChatReplayContinuationData"):
+            # chat data exist.
+            return None
+        # chat data do not exist, get playerSeekContinuationData.
+        init_cont = cont.get("playerSeekContinuationData")
+        if init_cont:
+            return init_cont.get("continuation")
+        self.raise_exception(exceptions.ChatDataFinished('Finished chat data'))
+
+    def _create_data(self, metadata, contents):
        actions = contents['liveChatContinuation'].get('actions')
-        if self.is_replay:    
-            interval = self._get_interval(actions)
-            metadata.setdefault("timeoutMs",interval)
-            """Archived chat has different structures than live chat, 
+        if self.is_replay:
+            last_offset_ms = self._get_lastoffset(actions)
+            metadata.setdefault("timeoutMs", 5000)
+            metadata.setdefault("last_offset_ms", last_offset_ms)
+            """Archived chat has different structures than live chat,
            so make it the same format."""
            chatdata = [action["replayChatItemAction"]["actions"][0]
-                for action in actions]
+                        for action in actions]
        else:
-            metadata.setdefault('timeoutMs', 10000)
+            metadata.setdefault('timeoutMs', 5000)
            chatdata = actions
        return metadata, chatdata

-    def _get_interval(self, actions: list):
-        if actions is None:
-            return 0
-        start = int(actions[0]["replayChatItemAction"]["videoOffsetTimeMsec"])
-        last = int(actions[-1]["replayChatItemAction"]["videoOffsetTimeMsec"])
-        return (last - start)
+    def _get_lastoffset(self, actions: list):
+        if actions:
+            return int(actions[-1]["replayChatItemAction"]["videoOffsetTimeMsec"])
+        return 0
+
+    def raise_exception(self, exception):
+        if self.exception_holder is None:
+            raise exception
+        self.exception_holder = exception
--- a/pytchat/parser/replay.py
+++ b/pytchat/parser/replay.py
@@ -1,76 +0,0 @@
-import json
-from .. import config
-from .. exceptions import ( 
-    ResponseContextError, 
-    NoContentsException, 
-    NoContinuationsException )
-
-
-logger = config.logger(__name__)
-
-class Parser:
-    def parse(self, jsn):
-        """
-        このparse関数はReplayChat._listen() 関数から定期的に呼び出される。
-        引数jsnはYoutubeから取得したアーカイブ済みチャットデータの生JSONであり、
-        このparse関数によって与えられたJSONを以下に分割して返す。
-         + timeout (次のチャットデータ取得までのインターバル)
-         + chat data（チャットデータ本体）
-         + continuation （次のチャットデータ取得に必要となるパラメータ）.
-        
-        ライブ配信のチャットとアーカイブ済み動画のチャットは構造が若干異なっているが、
-        ライブチャットと同じデータ形式に変換することにより、
-        同じprocessorでライブとリプレイどちらでも利用できるようにしている。
-
-        Parameter
-        ----------
-        + jsn : dict
-            + Youtubeから取得したチャットデータのJSONオブジェクト。
-              （pythonの辞書形式に変換済みの状態で渡される）
-
-        Returns
-        -------
-        + metadata : dict
-            + チャットデータに付随するメタデータ。timeout、 動画ID、continuationパラメータで構成される。           
-        + chatdata : list[dict]
-            + チャットデータ本体のリスト。
-        """
-        if jsn is None: 
-            return {'timeoutMs':0,'continuation':None},[]
-        if jsn['response']['responseContext'].get('errors'):
-            raise ResponseContextError('動画に接続できません。'
-        '動画IDが間違っているか、動画が削除／非公開の可能性があります。')
-        contents=jsn['response'].get('continuationContents')
-        #配信が終了した場合、もしくはチャットデータが取得できない場合
-        if contents is None:
-            raise NoContentsException('チャットデータを取得できませんでした。')
-
-        cont = contents['liveChatContinuation']['continuations'][0]
-        if cont is None:
-            raise NoContinuationsException('Continuationがありません。')
-        metadata = cont.get('liveChatReplayContinuationData')
-        if metadata is None:
-            unknown = list(cont.keys())[0]
-            if unknown != "playerSeekContinuationData":
-                logger.debug(f"Received unknown continuation type:{unknown}")
-                metadata = cont.get(unknown)
-        actions = contents['liveChatContinuation'].get('actions')
-        if actions is None:
-            #後続のチャットデータなし
-            return {"continuation":None,"timeout":0,"chatdata":[]}
-        interval = self.get_interval(actions)
-        metadata.setdefault("timeoutMs",interval)
-        """アーカイブ済みチャットはライブチャットと構造が異なっているため、以下の行により
-        ライブチャットと同じ形式にそろえる"""
-        chatdata = [action["replayChatItemAction"]["actions"][0] for action in actions]
-        return metadata, chatdata
-
-    def get_interval(self, actions: list):
-        if actions is None:
-            return 0
-        start = int(actions[0]["replayChatItemAction"]["videoOffsetTimeMsec"])
-        last = int(actions[-1]["replayChatItemAction"]["videoOffsetTimeMsec"])
-        return (last - start)
-
-
-
--- a/pytchat/processors/chat_processor.py
+++ b/pytchat/processors/chat_processor.py
@@ -1,28 +1,30 @@
 class ChatProcessor:
    '''
-     Listenerからチャットデータ（actions）を受け取り
-    チャットデータを加工するクラスの抽象クラス
+    Abstract class that processes chat data.
+    Receive chat data (actions) from Listener.
    '''
+
    def process(self, chat_components: list):
        '''
-        チャットデータの加工を表すインターフェース。
-        LiveChatオブジェクトから呼び出される。 
-               
+        Interface that represents processing of chat data.
+        Called from LiveChat object.
+
        Parameter
        ----------
        chat_components: List[component]
            component : dict {
                "video_id" : str
-                    動画ID
                "timeout"  : int
-                    次のチャットの再読み込みまでの時間(秒）
+                    Time to fetch next chat (seconds)
                "chatdata" : List[dict]
-                    チャットデータのリスト
+                    List of chat data.
            }
        '''
        pass

-
-
-
-
+    def finalize(self, *args, **kwargs):
+        '''
+        Interface for finalizing the process.
+        Called when chat fetching finished.
+        '''
+        pass
--- a/pytchat/processors/combinator.py
+++ b/pytchat/processors/combinator.py
@@ -1,5 +1,6 @@
 from .chat_processor import ChatProcessor

+
 class Combinator(ChatProcessor):
    '''
    Combinator combines multiple chat processors.
@@ -8,11 +9,11 @@ class Combinator(ChatProcessor):
    For example:
        [constructor]
        chat = LiveChat("video_id", processor = ( Processor1(), Processor2(), Processor3() ) )
-        
+
        [receive return values]
        ret1, ret2, ret3 = chat.get()
-    
-    The return values are tuple of processed chat data, 
+
+    The return values are tuple of processed chat data,
    the order of return depends on parameter order.

    Parameter
@@ -34,6 +35,8 @@ class Combinator(ChatProcessor):
            Tuple of chat data processed by each chat processor.
        '''
        return tuple(processor.process(chat_components)
-            for processor in self.processors)
-            
+                     for processor in self.processors)

+    def finalize(self, *args, **kwargs):
+        [processor.finalize(*args, **kwargs)
+                     for processor in self.processors]
--- a/pytchat/processors/compatible/processor.py
+++ b/pytchat/processors/compatible/processor.py
@@ -1,20 +1,20 @@
-import datetime
-import time
 from .renderer.textmessage import LiveChatTextMessageRenderer
 from .renderer.paidmessage import LiveChatPaidMessageRenderer
 from .renderer.paidsticker import LiveChatPaidStickerRenderer
 from .renderer.legacypaid import LiveChatLegacyPaidMessageRenderer
+from .renderer.membership import LiveChatMembershipItemRenderer
 from .. chat_processor import ChatProcessor
 from ... import config
 logger = config.logger(__name__)

+
 class CompatibleProcessor(ChatProcessor):

    def process(self, chat_components: list):

        chatlist = []
        timeout = 0
-        ret={}
+        ret = {}
        ret["kind"] = "youtube#liveChatMessageListResponse"
        ret["etag"] = ""
        ret["nextPageToken"] = ""
@@ -23,20 +23,24 @@ class CompatibleProcessor(ChatProcessor):
            for chat_component in chat_components:
                timeout += chat_component.get('timeout', 0)
                chatdata = chat_component.get('chatdata')
-             
-                if chatdata is None: break
+
+                if chatdata is None:
+                    break
                for action in chatdata:
-                    if action is None: continue
-                    if action.get('addChatItemAction') is None: continue
-                    if action['addChatItemAction'].get('item') is None: continue
+                    if action is None:
+                        continue
+                    if action.get('addChatItemAction') is None:
+                        continue
+                    if action['addChatItemAction'].get('item') is None:
+                        continue

                    chat = self.parse(action)
                    if chat:
                        chatlist.append(chat)
-        ret["pollingIntervalMillis"] = int(timeout*1000)
-        ret["pageInfo"]={
-            "totalResults":len(chatlist),
-            "resultsPerPage":len(chatlist),
+        ret["pollingIntervalMillis"] = int(timeout * 1000)
+        ret["pageInfo"] = {
+            "totalResults": len(chatlist),
+            "resultsPerPage": len(chatlist),
        }
        ret["items"] = chatlist

@@ -47,35 +51,37 @@ class CompatibleProcessor(ChatProcessor):
        action = sitem.get("addChatItemAction")
        if action:
            item = action.get("item")
-        if item is None: return None
-        rd={}
+        if item is None:
+            return None
+        rd = {}
        try:
            renderer = self.get_renderer(item)
-            if renderer == None:
+            if renderer is None:
                return None

            rd["kind"] = "youtube#liveChatMessage"
            rd["etag"] = ""
            rd["id"] = 'LCC.' + renderer.get_id()
-            rd["snippet"]       = renderer.get_snippet()
+            rd["snippet"] = renderer.get_snippet()
            rd["authorDetails"] = renderer.get_authordetails()
-        except (KeyError,TypeError,AttributeError) as e:
+        except (KeyError, TypeError, AttributeError) as e:
            logger.error(f"Error: {str(type(e))}-{str(e)}")
            logger.error(f"item: {sitem}")
            return None
-        
-        return rd        
+
+        return rd

    def get_renderer(self, item):
        if item.get("liveChatTextMessageRenderer"):
            renderer = LiveChatTextMessageRenderer(item)
        elif item.get("liveChatPaidMessageRenderer"):
            renderer = LiveChatPaidMessageRenderer(item)
-        elif item.get( "liveChatPaidStickerRenderer"):
+        elif item.get("liveChatPaidStickerRenderer"):
            renderer = LiveChatPaidStickerRenderer(item)
        elif item.get("liveChatLegacyPaidMessageRenderer"):
            renderer = LiveChatLegacyPaidMessageRenderer(item)
+        elif item.get("liveChatMembershipItemRenderer"):
+            renderer = LiveChatMembershipItemRenderer(item)
        else:
            renderer = None
        return renderer
-
--- a/pytchat/processors/compatible/renderer/base.py
+++ b/pytchat/processors/compatible/renderer/base.py
@@ -1,83 +1,82 @@
-import datetime, pytz
+from datetime import datetime, timedelta, timezone
+
+TZ_UTC = timezone(timedelta(0), 'UTC')
+

 class BaseRenderer:
    def __init__(self, item, chattype):
        self.renderer = list(item.values())[0]
        self.chattype = chattype

-
    def get_snippet(self):

        message = self.get_message(self.renderer)

        return {
-            "type"              : self.chattype,
-            "liveChatId"        : "",
-            "authorChannelId"   : self.renderer.get("authorExternalChannelId"),
-            "publishedAt"       : self.get_publishedat(self.renderer.get("timestampUsec",0)),
-            "hasDisplayContent" : True,
-            "displayMessage"    : message,
+            "type": self.chattype,
+            "liveChatId": "",
+            "authorChannelId": self.renderer.get("authorExternalChannelId"),
+            "publishedAt": self.get_publishedat(self.renderer.get("timestampUsec", 0)),
+            "hasDisplayContent": True,
+            "displayMessage": message,
            "textMessageDetails": {
-                "messageText"   : message  
+                "messageText": message
            }
        }

-
    def get_authordetails(self):
        authorExternalChannelId = self.renderer.get("authorExternalChannelId")
-        #parse subscriber type
+        # parse subscriber type
        isVerified, isChatOwner, isChatSponsor, isChatModerator = (
            self.get_badges(self.renderer)
        )
-        return  {
-            "channelId"         : authorExternalChannelId,
-            "channelUrl"        : "http://www.youtube.com/channel/"+authorExternalChannelId,
-            "displayName"       : self.renderer["authorName"]["simpleText"],
-            "profileImageUrl"   : self.renderer["authorPhoto"]["thumbnails"][1]["url"] ,
-            "isVerified"        : isVerified,
-            "isChatOwner"       : isChatOwner,
-            "isChatSponsor"     : isChatSponsor,
-            "isChatModerator"   : isChatModerator
-        }    
+        return {
+            "channelId": authorExternalChannelId,
+            "channelUrl": "http://www.youtube.com/channel/" + authorExternalChannelId,
+            "displayName": self.renderer["authorName"]["simpleText"],
+            "profileImageUrl": self.renderer["authorPhoto"]["thumbnails"][1]["url"],
+            "isVerified": isVerified,
+            "isChatOwner": isChatOwner,
+            "isChatSponsor": isChatSponsor,
+            "isChatModerator": isChatModerator
+        }

-
-    def get_message(self,renderer):
+    def get_message(self, renderer):
        message = ''
        if renderer.get("message"):
-            runs=renderer["message"].get("runs")
+            runs = renderer["message"].get("runs")
            if runs:
                for r in runs:
                    if r:
                        if r.get('emoji'):
-                            message += r['emoji'].get('shortcuts',[''])[0]
+                            message += r['emoji'].get('shortcuts', [''])[0]
                        else:
-                            message += r.get('text','')
+                            message += r.get('text', '')
        return message

-    def get_badges(self,renderer):
+    def get_badges(self, renderer):
        isVerified = False
        isChatOwner = False
        isChatSponsor = False
        isChatModerator = False
-        badges=renderer.get("authorBadges")
+        badges = renderer.get("authorBadges")
        if badges:
            for badge in badges:
-                author_type  = badge["liveChatAuthorBadgeRenderer"]["accessibility"]["accessibilityData"]["label"]
-                if author_type == '確認済み':
+                author_type = badge["liveChatAuthorBadgeRenderer"]["accessibility"]["accessibilityData"]["label"]
+                if author_type == 'VERIFIED' or author_type == '確認済み':
                    isVerified = True
-                if author_type == '所有者':
+                if author_type == 'OWNER' or author_type == '所有者':
                    isChatOwner = True
-                if 'メンバー' in author_type:
+                if 'メンバー' in author_type or 'MEMBER' in author_type:
                    isChatSponsor = True
-                if author_type == 'モデレーター':
+                if author_type == 'MODERATOR' or author_type == 'モデレーター':
                    isChatModerator = True
        return isVerified, isChatOwner, isChatSponsor, isChatModerator
-    
+
    def get_id(self):
        return self.renderer.get('id')
-    
-    def get_publishedat(self,timestamp):
-        dt = datetime.datetime.fromtimestamp(int(timestamp)/1000000)
-        return dt.astimezone(pytz.utc).isoformat(
-            timespec='milliseconds').replace('+00:00','Z')
-        
+
+    def get_publishedat(self, timestamp):
+        dt = datetime.fromtimestamp(int(timestamp) / 1000000)
+        return dt.astimezone(TZ_UTC).isoformat(
+            timespec='milliseconds').replace('+00:00', 'Z')
--- a/pytchat/processors/compatible/renderer/currency.py
+++ b/pytchat/processors/compatible/renderer/currency.py
@@ -1,12 +1,12 @@
 '''
-YouTubeスーパーチャットで使用される通貨の記号とレート検索用の略号の
-対応表
+Table of symbols for the currencies used in YouTube Superchat.
+
 Key：
-    YouTubeスーパーチャットで使用される通貨の記号
-    （アルファベットで終わる場合、0xA0(&npsp)が付く）
+     Currency symbols used in YouTube Super Chat
+     If it ends with an alphabet, it will be followed by 0xA0(&npsp).
 Value:
-    fxtext: 3文字の通貨略称
-    jptest: 日本語テキスト
+    fxtext: ISO 4217 currency code
+    jptest: japanese text
 '''
 symbols = {
    "$": {"fxtext": "USD", "jptext": "米・ドル"},
@@ -35,4 +35,4 @@ symbols = {
    "NOK\xa0": {"fxtext": "NOK", "jptext": "ノルウェー・クローネ"},
    "BAM\xa0": {"fxtext": "BAM", "jptext": "ボスニア・兌換マルカ"},
    "SGD\xa0": {"fxtext": "SGD", "jptext": "シンガポール・ドル"}
-}
+}
--- a/pytchat/processors/compatible/renderer/legacypaid.py
+++ b/pytchat/processors/compatible/renderer/legacypaid.py
@@ -1,4 +1,6 @@
 from .base import BaseRenderer
+
+
 class LiveChatLegacyPaidMessageRenderer(BaseRenderer):
    def __init__(self, item):
        super().__init__(item, "newSponsorEvent")
@@ -8,36 +10,33 @@ class LiveChatLegacyPaidMessageRenderer(BaseRenderer):
        message = self.get_message(self.renderer)

        return {
-            "type"              : self.chattype,
-            "liveChatId"        : "",
-            "authorChannelId"   : self.renderer.get("authorExternalChannelId"),
-            "publishedAt"       : self.get_publishedat(self.renderer.get("timestampUsec",0)),
-            "hasDisplayContent" : True,
-            "displayMessage"    : message,
-         
+            "type": self.chattype,
+            "liveChatId": "",
+            "authorChannelId": self.renderer.get("authorExternalChannelId"),
+            "publishedAt": self.get_publishedat(self.renderer.get("timestampUsec", 0)),
+            "hasDisplayContent": True,
+            "displayMessage": message,
+
        }

    def get_authordetails(self):
        authorExternalChannelId = self.renderer.get("authorExternalChannelId")
-        #parse subscriber type
+        # parse subscriber type
        isVerified, isChatOwner, _, isChatModerator = (
            self.get_badges(self.renderer)
        )
-        return  {
-            "channelId"         : authorExternalChannelId,
-            "channelUrl"        : "http://www.youtube.com/channel/"+authorExternalChannelId,
-            "displayName"       : self.renderer["authorName"]["simpleText"],
-            "profileImageUrl"   : self.renderer["authorPhoto"]["thumbnails"][1]["url"] ,
-            "isVerified"        : isVerified,
-            "isChatOwner"       : isChatOwner,
-            "isChatSponsor"     : True,
-            "isChatModerator"   : isChatModerator
-        }    
+        return {
+            "channelId": authorExternalChannelId,
+            "channelUrl": "http://www.youtube.com/channel/" + authorExternalChannelId,
+            "displayName": self.renderer["authorName"]["simpleText"],
+            "profileImageUrl": self.renderer["authorPhoto"]["thumbnails"][1]["url"],
+            "isVerified": isVerified,
+            "isChatOwner": isChatOwner,
+            "isChatSponsor": True,
+            "isChatModerator": isChatModerator
+        }

-
-    def get_message(self,renderer):
+    def get_message(self, renderer):
        message = (renderer["eventText"]["runs"][0]["text"]
-            )+' / '+(renderer["detailText"]["simpleText"])
+                   ) + ' / ' + (renderer["detailText"]["simpleText"])
        return message
-
-
--- a/pytchat/processors/compatible/renderer/membership.py
+++ b/pytchat/processors/compatible/renderer/membership.py
@@ -0,0 +1,40 @@
+from .base import BaseRenderer
+
+
+class LiveChatMembershipItemRenderer(BaseRenderer):
+    def __init__(self, item):
+        super().__init__(item, "newSponsorEvent")
+
+    def get_snippet(self):
+        message = self.get_message(self.renderer)
+        return {
+            "type": self.chattype,
+            "liveChatId": "",
+            "authorChannelId": self.renderer.get("authorExternalChannelId"),
+            "publishedAt": self.get_publishedat(self.renderer.get("timestampUsec", 0)),
+            "hasDisplayContent": True,
+            "displayMessage": message,
+
+        }
+
+    def get_authordetails(self):
+        authorExternalChannelId = self.renderer.get("authorExternalChannelId")
+        # parse subscriber type
+        isVerified, isChatOwner, _, isChatModerator = (
+            self.get_badges(self.renderer)
+        )
+        return {
+            "channelId": authorExternalChannelId,
+            "channelUrl": "http://www.youtube.com/channel/" + authorExternalChannelId,
+            "displayName": self.renderer["authorName"]["simpleText"],
+            "profileImageUrl": self.renderer["authorPhoto"]["thumbnails"][1]["url"],
+            "isVerified": isVerified,
+            "isChatOwner": isChatOwner,
+            "isChatSponsor": True,
+            "isChatModerator": isChatModerator
+        }
+
+    def get_message(self, renderer):
+        message = ''.join([mes.get("text", "")
+                           for mes in renderer["headerSubtext"]["runs"]])
+        return message, [message]
--- a/pytchat/processors/compatible/renderer/paidmessage.py
+++ b/pytchat/processors/compatible/renderer/paidmessage.py
@@ -3,6 +3,7 @@ from . import currency
 from .base import BaseRenderer
 superchat_regex = re.compile(r"^(\D*)(\d{1,3}(,\d{3})*(\.\d*)*\b)$")

+
 class LiveChatPaidMessageRenderer(BaseRenderer):
    def __init__(self, item):
        super().__init__(item, "superChatEvent")
@@ -10,32 +11,32 @@ class LiveChatPaidMessageRenderer(BaseRenderer):
    def get_snippet(self):
        authorName = self.renderer["authorName"]["simpleText"]
        message = self.get_message(self.renderer)
-        amountDisplayString, symbol, amountMicros =(
+        amountDisplayString, symbol, amountMicros = (
            self.get_amountdata(self.renderer)
        )
        return {
-            "type"              : self.chattype,
-            "liveChatId"        : "",
-            "authorChannelId"   : self.renderer.get("authorExternalChannelId"),
-            "publishedAt"       : self.get_publishedat(self.renderer.get("timestampUsec",0)),
-            "hasDisplayContent" : True,
-            "displayMessage"    : amountDisplayString+" from "+authorName+': \"'+ message+'\"',
-            "superChatDetails"  : {
-                "amountMicros"          : amountMicros,
-                "currency"              : currency.symbols[symbol]["fxtext"] if currency.symbols.get(symbol) else symbol,
-                "amountDisplayString"   : amountDisplayString,
-                "tier"                  : 0,
-                "backgroundColor" : self.renderer.get("bodyBackgroundColor", 0)
+            "type": self.chattype,
+            "liveChatId": "",
+            "authorChannelId": self.renderer.get("authorExternalChannelId"),
+            "publishedAt": self.get_publishedat(self.renderer.get("timestampUsec", 0)),
+            "hasDisplayContent": True,
+            "displayMessage": amountDisplayString + " from " + authorName + ': \"' + message + '\"',
+            "superChatDetails": {
+                "amountMicros": amountMicros,
+                "currency": currency.symbols[symbol]["fxtext"] if currency.symbols.get(symbol) else symbol,
+                "amountDisplayString": amountDisplayString,
+                "tier": 0,
+                "backgroundColor": self.renderer.get("bodyBackgroundColor", 0)
            }
        }

-    def get_amountdata(self,renderer):
+    def get_amountdata(self, renderer):
        amountDisplayString = renderer["purchaseAmountText"]["simpleText"]
        m = superchat_regex.search(amountDisplayString)
        if m:
            symbol = m.group(1)
-            amountMicros = int(float(m.group(2).replace(',',''))*1000000)
+            amountMicros = int(float(m.group(2).replace(',', '')) * 1000000)
        else:
            symbol = ""
            amountMicros = 0
-        return amountDisplayString, symbol, amountMicros
+        return amountDisplayString, symbol, amountMicros
--- a/pytchat/processors/compatible/renderer/paidsticker.py
+++ b/pytchat/processors/compatible/renderer/paidsticker.py
@@ -3,46 +3,45 @@ from . import currency
 from .base import BaseRenderer
 superchat_regex = re.compile(r"^(\D*)(\d{1,3}(,\d{3})*(\.\d*)*\b)$")

+
 class LiveChatPaidStickerRenderer(BaseRenderer):
    def __init__(self, item):
        super().__init__(item, "superStickerEvent")

    def get_snippet(self):
        authorName = self.renderer["authorName"]["simpleText"]
-        amountDisplayString, symbol, amountMicros =(
+        amountDisplayString, symbol, amountMicros = (
            self.get_amountdata(self.renderer)
        )

        return {
-            "type"              : self.chattype,
-            "liveChatId"        : "",
-            "authorChannelId"   : self.renderer.get("authorExternalChannelId"),
-            "publishedAt"       : self.get_publishedat(self.renderer.get("timestampUsec",0)),
-            "hasDisplayContent" : True,
-            "displayMessage"    : "Super Sticker " + amountDisplayString + " from "+authorName,
-            "superStickerDetails"  : {
-                "superStickerMetaData" : {
+            "type": self.chattype,
+            "liveChatId": "",
+            "authorChannelId": self.renderer.get("authorExternalChannelId"),
+            "publishedAt": self.get_publishedat(self.renderer.get("timestampUsec", 0)),
+            "hasDisplayContent": True,
+            "displayMessage": "Super Sticker " + amountDisplayString + " from " + authorName,
+            "superStickerDetails": {
+                "superStickerMetaData": {
                    "stickerId": "",
                    "altText": "",
-                    "language": ""                    
+                    "language": ""
                },
-                "amountMicros"          : amountMicros,
-                "currency"              : currency.symbols[symbol]["fxtext"] if currency.symbols.get(symbol) else symbol,
-                "amountDisplayString"   : amountDisplayString,
-                "tier"                  : 0,
-                "backgroundColor" : self.renderer.get("bodyBackgroundColor", 0)
+                "amountMicros": amountMicros,
+                "currency": currency.symbols[symbol]["fxtext"] if currency.symbols.get(symbol) else symbol,
+                "amountDisplayString": amountDisplayString,
+                "tier": 0,
+                "backgroundColor": self.renderer.get("bodyBackgroundColor", 0)
            }
        }

-    def get_amountdata(self,renderer):
+    def get_amountdata(self, renderer):
        amountDisplayString = renderer["purchaseAmountText"]["simpleText"]
        m = superchat_regex.search(amountDisplayString)
        if m:
            symbol = m.group(1)
-            amountMicros = int(float(m.group(2).replace(',',''))*1000000)
+            amountMicros = int(float(m.group(2).replace(',', '')) * 1000000)
        else:
            symbol = ""
            amountMicros = 0
        return amountDisplayString, symbol, amountMicros
- 
-
--- a/pytchat/processors/compatible/renderer/textmessage.py
+++ b/pytchat/processors/compatible/renderer/textmessage.py
@@ -1,4 +1,6 @@
 from .base import BaseRenderer
+
+
 class LiveChatTextMessageRenderer(BaseRenderer):
    def __init__(self, item):
        super().__init__(item, "textMessageEvent")
--- a/pytchat/processors/default/custom_encoder.py
+++ b/pytchat/processors/default/custom_encoder.py
@@ -0,0 +1,11 @@
+import json
+from .renderer.base import Author
+from .renderer.paidmessage import Colors
+from .renderer.paidsticker import Colors2
+
+
+class CustomEncoder(json.JSONEncoder):
+    def default(self, obj):
+        if isinstance(obj, Author) or isinstance(obj, Colors) or isinstance(obj, Colors2):
+            return vars(obj)
+        return json.JSONEncoder.default(self, obj)
--- a/pytchat/processors/default/processor.py
+++ b/pytchat/processors/default/processor.py
@@ -1,31 +1,132 @@
 import asyncio
+import json
 import time
+from .custom_encoder import CustomEncoder
 from .renderer.textmessage import LiveChatTextMessageRenderer
 from .renderer.paidmessage import LiveChatPaidMessageRenderer
 from .renderer.paidsticker import LiveChatPaidStickerRenderer
 from .renderer.legacypaid import LiveChatLegacyPaidMessageRenderer
+from .renderer.membership import LiveChatMembershipItemRenderer
 from .. chat_processor import ChatProcessor
 from ... import config
+
 logger = config.logger(__name__)

+
+class Chat:
+    def json(self) -> str:
+        return json.dumps(vars(self), ensure_ascii=False, cls=CustomEncoder)
+
+
 class Chatdata:
-    def __init__(self,chatlist:list, timeout:float):
+
+    def __init__(self, chatlist: list, timeout: float, abs_diff):
        self.items = chatlist
        self.interval = timeout
-    
+        self.abs_diff = abs_diff
+        self.itemcount = 0
+
    def tick(self):
-        if self.interval == 0:
+        '''DEPRECATE
+            Use sync_items()
+        '''
+        if len(self.items) < 1:
            time.sleep(1)
            return
-        time.sleep(self.interval/len(self.items))
+        if self.itemcount == 0:
+            self.starttime = time.time()
+        if len(self.items) == 1:
+            total_itemcount = 1
+        else:
+            total_itemcount = len(self.items) - 1
+        next_chattime = (self.items[0].timestamp + (self.items[-1].timestamp - self.items[0].timestamp) / total_itemcount * self.itemcount) / 1000
+        tobe_disptime = self.abs_diff + next_chattime
+        wait_sec = tobe_disptime - time.time()
+        self.itemcount += 1
+        
+        if wait_sec < 0:
+            wait_sec = 0
+       
+        time.sleep(wait_sec)

    async def tick_async(self):
-        if self.interval == 0:
+        '''DEPRECATE
+            Use async_items()
+        '''
+        if len(self.items) < 1:
            await asyncio.sleep(1)
            return
-        await asyncio.sleep(self.interval/len(self.items))
+        if self.itemcount == 0:
+            self.starttime = time.time()
+        if len(self.items) == 1:
+            total_itemcount = 1
+        else:
+            total_itemcount = len(self.items) - 1
+        next_chattime = (self.items[0].timestamp + (self.items[-1].timestamp - self.items[0].timestamp) / total_itemcount * self.itemcount) / 1000
+        tobe_disptime = self.abs_diff + next_chattime
+        wait_sec = tobe_disptime - time.time()
+        self.itemcount += 1
+        
+        if wait_sec < 0:
+            wait_sec = 0
+       
+        await asyncio.sleep(wait_sec)
+
+    def sync_items(self):
+        starttime = time.time()
+        if len(self.items) > 0:
+            last_chattime = self.items[-1].timestamp / 1000
+            tobe_disptime = self.abs_diff + last_chattime
+            wait_total_sec = max(tobe_disptime - time.time(), 0)
+            if len(self.items) > 1:
+                wait_sec = wait_total_sec / len(self.items)
+            elif len(self.items) == 1:
+                wait_sec = 0
+            for c in self.items:
+                if wait_sec < 0:
+                    wait_sec = 0
+                time.sleep(wait_sec)
+                yield c
+        stop_interval = time.time() - starttime
+        if stop_interval < 1:
+            time.sleep(1 - stop_interval)
+
+    async def async_items(self):
+        starttime = time.time()
+        if len(self.items) > 0:
+            last_chattime = self.items[-1].timestamp / 1000
+            tobe_disptime = self.abs_diff + last_chattime
+            wait_total_sec = max(tobe_disptime - time.time(), 0)
+            if len(self.items) > 1:
+                wait_sec = wait_total_sec / len(self.items)
+            elif len(self.items) == 1:
+                wait_sec = 0
+            for c in self.items:
+                if wait_sec < 0:
+                    wait_sec = 0
+                await asyncio.sleep(wait_sec)
+                yield c
+                
+        stop_interval = time.time() - starttime
+        if stop_interval < 1:
+            await asyncio.sleep(1 - stop_interval)
+
+    def json(self) -> str:
+        return ''.join(("[", ','.join((a.json() for a in self.items)), "]"))
+

 class DefaultProcessor(ChatProcessor):
+    def __init__(self):
+        self.first = True
+        self.abs_diff = 0
+        self.renderers = {
+            "liveChatTextMessageRenderer": LiveChatTextMessageRenderer(),
+            "liveChatPaidMessageRenderer": LiveChatPaidMessageRenderer(),
+            "liveChatPaidStickerRenderer": LiveChatPaidStickerRenderer(),
+            "liveChatLegacyPaidMessageRenderer": LiveChatLegacyPaidMessageRenderer(),
+            "liveChatMembershipItemRenderer": LiveChatMembershipItemRenderer()
+        }
+
    def process(self, chat_components: list):

        chatlist = []
@@ -33,48 +134,46 @@ class DefaultProcessor(ChatProcessor):

        if chat_components:
            for component in chat_components:
+                if component is None:
+                    continue
                timeout += component.get('timeout', 0)
-                chatdata = component.get('chatdata')
-             
-                if chatdata is None: continue
+                chatdata = component.get('chatdata')  # if from Extractor, chatdata is generator.
+                if chatdata is None:
+                    continue
                for action in chatdata:
-                    if action is None: continue
-                    if action.get('addChatItemAction') is None: continue
-                    if action['addChatItemAction'].get('item') is None: continue
-
-                    chat = self._parse(action)
+                    if action is None:
+                        continue
+                    if action.get('addChatItemAction') is None:
+                        continue
+                    item = action['addChatItemAction'].get('item')
+                    if item is None:
+                        continue
+                    chat = self._parse(item)
                    if chat:
                        chatlist.append(chat)
-        return Chatdata(chatlist, float(timeout))
-  
+        
+        if self.first and chatlist:
+            self.abs_diff = time.time() - chatlist[0].timestamp / 1000
+            self.first = False

-    def _parse(self, sitem):
+        chatdata = Chatdata(chatlist, float(timeout), self.abs_diff)

-        action = sitem.get("addChatItemAction")
-        if action:
-            item = action.get("item")
-        if item is None: return None
+        return chatdata
+
+    def _parse(self, item):
        try:
-            renderer = self._get_renderer(item)
-            if renderer == None:
+            key = list(item.keys())[0]
+            renderer = self.renderers.get(key)
+            if renderer is None:
                return None
-
+            renderer.setitem(item.get(key), Chat())
+            renderer.settype()
            renderer.get_snippet()
            renderer.get_authordetails()
-        except (KeyError,TypeError,AttributeError) as e:
-            logger.error(f"{str(type(e))}-{str(e)} sitem:{str(sitem)}")
+            rendered_chatobj = renderer.get_chatobj()
+            renderer.clear()
+        except (KeyError, TypeError) as e:
+            logger.error(f"{str(type(e))}-{str(e)} item:{str(item)}")
            return None
-        return renderer        
-
-    def _get_renderer(self, item):
-        if item.get("liveChatTextMessageRenderer"):
-            renderer = LiveChatTextMessageRenderer(item)
-        elif item.get("liveChatPaidMessageRenderer"):
-            renderer = LiveChatPaidMessageRenderer(item)
-        elif item.get( "liveChatPaidStickerRenderer"):
-            renderer = LiveChatPaidStickerRenderer(item)
-        elif item.get("liveChatLegacyPaidMessageRenderer"):
-            renderer = LiveChatLegacyPaidMessageRenderer(item)
-        else:
-            renderer = None
-        return renderer
+        
+        return rendered_chatobj
--- a/pytchat/processors/default/renderer/base.py
+++ b/pytchat/processors/default/renderer/base.py
@@ -1,90 +1,101 @@
 from datetime import datetime

+
 class Author:
    pass
+
+
 class BaseRenderer:
-    def __init__(self, item, chattype):
-        self.renderer = list(item.values())[0]
-        self.chattype = chattype
-        self.author = Author()
+    def setitem(self, item, chat):
+        self.item = item
+        self.chat = chat
+        self.chat.author = Author()
+
+    def settype(self):
+        pass

    def get_snippet(self):
-        self.type = self.chattype
-        self.id = self.renderer.get('id')
-        timestampUsec = int(self.renderer.get("timestampUsec",0))
-        self.timestamp = int(timestampUsec/1000)
-        tst = self.renderer.get("timestampText")
+        self.chat.id = self.item.get('id')
+        timestampUsec = int(self.item.get("timestampUsec", 0))
+        self.chat.timestamp = int(timestampUsec / 1000)
+        tst = self.item.get("timestampText")
        if tst:
-            self.elapsedTime = tst.get("simpleText")
+            self.chat.elapsedTime = tst.get("simpleText")
        else:
-            self.elapsedTime = ""
-        self.datetime = self.get_datetime(timestampUsec)
-        self.message ,self.messageEx = self.get_message(self.renderer)
-        self.id =  self.renderer.get('id')
-        self.amountValue= 0.0
-        self.amountString = ""
-        self.currency= ""
-        self.bgColor = 0
+            self.chat.elapsedTime = ""
+        self.chat.datetime = self.get_datetime(timestampUsec)
+        self.chat.message, self.chat.messageEx = self.get_message(self.item)
+        self.chat.id = self.item.get('id')
+        self.chat.amountValue = 0.0
+        self.chat.amountString = ""
+        self.chat.currency = ""
+        self.chat.bgColor = 0

    def get_authordetails(self):
-        self.author.badgeUrl = ""
-        (self.author.isVerified, 
-        self.author.isChatOwner, 
-        self.author.isChatSponsor, 
-        self.author.isChatModerator) = (
-            self.get_badges(self.renderer)
+        self.chat.author.badgeUrl = ""
+        (self.chat.author.isVerified,
+         self.chat.author.isChatOwner,
+         self.chat.author.isChatSponsor,
+         self.chat.author.isChatModerator) = (
+            self.get_badges(self.item)
        )
-        self.author.channelId = self.renderer.get("authorExternalChannelId")
-        self.author.channelUrl = "http://www.youtube.com/channel/"+self.author.channelId
-        self.author.name      = self.renderer["authorName"]["simpleText"]
-        self.author.imageUrl= self.renderer["authorPhoto"]["thumbnails"][1]["url"] 
-        
+        self.chat.author.channelId = self.item.get("authorExternalChannelId")
+        self.chat.author.channelUrl = "http://www.youtube.com/channel/" + self.chat.author.channelId
+        self.chat.author.name = self.item["authorName"]["simpleText"]
+        self.chat.author.imageUrl = self.item["authorPhoto"]["thumbnails"][1]["url"]

-
-    def get_message(self,renderer):
+    def get_message(self, item):
        message = ''
        message_ex = []
-        if renderer.get("message"):
-            runs=renderer["message"].get("runs")
-            if runs:
-                for r in runs:
-                    if r:
-                        if r.get('emoji'):
-                            message += r['emoji'].get('shortcuts',[''])[0]
-                            message_ex.append(r['emoji']['image']['thumbnails'][1].get('url'))
-                        else:
-                            message += r.get('text','')
-                            message_ex.append(r.get('text',''))
+        runs = item.get("message", {}).get("runs", {})
+        for r in runs:
+            if not hasattr(r, "get"):
+                continue
+            if r.get('emoji'):
+                message += r['emoji'].get('shortcuts', [''])[0]
+                message_ex.append({
+                    'id': r['emoji'].get('emojiId').split('/')[-1],
+                    'txt': r['emoji'].get('shortcuts', [''])[0],
+                    'url': r['emoji']['image']['thumbnails'][0].get('url')
+                })
+            else:
+                message += r.get('text', '')
+                message_ex.append(r.get('text', ''))
        return message, message_ex

-
-
-    def get_badges(self,renderer):
+    def get_badges(self, renderer):
+        self.chat.author.type = ''
        isVerified = False
        isChatOwner = False
        isChatSponsor = False
        isChatModerator = False
-        badges=renderer.get("authorBadges")
-        if badges:
-            for badge in badges:
-                author_type  = badge["liveChatAuthorBadgeRenderer"]["accessibility"]["accessibilityData"]["label"]
-                if author_type == '確認済み':
+        badges = renderer.get("authorBadges", {})
+        for badge in badges:
+            if badge["liveChatAuthorBadgeRenderer"].get("icon"):
+                author_type = badge["liveChatAuthorBadgeRenderer"]["icon"]["iconType"]
+                self.chat.author.type = author_type
+                if author_type == 'VERIFIED':
                    isVerified = True
-                if author_type == '所有者':
+                if author_type == 'OWNER':
                    isChatOwner = True
-                if 'メンバー' in author_type:
-                    isChatSponsor = True
-                    self.get_badgeurl(badge)
-                if author_type == 'モデレーター':
+                if author_type == 'MODERATOR':
                    isChatModerator = True
+            if badge["liveChatAuthorBadgeRenderer"].get("customThumbnail"):
+                isChatSponsor = True
+                self.chat.author.type = 'MEMBER'
+                self.get_badgeurl(badge)
        return isVerified, isChatOwner, isChatSponsor, isChatModerator
-    

-    def get_badgeurl(self,badge):
-        self.author.badgeUrl = badge["liveChatAuthorBadgeRenderer"]["customThumbnail"]["thumbnails"][0]["url"]
+    def get_badgeurl(self, badge):
+        self.chat.author.badgeUrl = badge["liveChatAuthorBadgeRenderer"]["customThumbnail"]["thumbnails"][0]["url"]

+    def get_datetime(self, timestamp):
+        dt = datetime.fromtimestamp(timestamp / 1000000)
+        return dt.strftime('%Y-%m-%d %H:%M:%S')

+    def get_chatobj(self):
+        return self.chat

-    def get_datetime(self,timestamp):
-        dt = datetime.fromtimestamp(timestamp/1000000)
-        return dt.strftime('%Y-%m-%d %H:%M:%S')
+    def clear(self):
+        self.item = None
+        self.chat = None
--- a/pytchat/processors/default/renderer/currency.py
+++ b/pytchat/processors/default/renderer/currency.py
@@ -35,4 +35,4 @@ symbols = {
    "NOK\xa0": {"fxtext": "NOK", "jptext": "ノルウェー・クローネ"},
    "BAM\xa0": {"fxtext": "BAM", "jptext": "ボスニア・兌換マルカ"},
    "SGD\xa0": {"fxtext": "SGD", "jptext": "シンガポール・ドル"}
-}
+}
--- a/pytchat/processors/default/renderer/legacypaid.py
+++ b/pytchat/processors/default/renderer/legacypaid.py
@@ -1,18 +1,15 @@
 from .base import BaseRenderer
-class LiveChatLegacyPaidMessageRenderer(BaseRenderer):
-    def __init__(self, item):
-        super().__init__(item, "newSponsor")

-        
+
+class LiveChatLegacyPaidMessageRenderer(BaseRenderer):
+    def settype(self):
+        self.chat.type = "newSponsor"

    def get_authordetails(self):
        super().get_authordetails()
-        self.author.isChatSponsor =  True
-
-
-    def get_message(self,renderer):
-        message = (renderer["eventText"]["runs"][0]["text"]
-            )+' / '+(renderer["detailText"]["simpleText"])
-        return message
-
+        self.chat.author.isChatSponsor = True

+    def get_message(self, item):
+        message = (item["eventText"]["runs"][0]["text"]
+                   ) + ' / ' + (item["detailText"]["simpleText"])
+        return message, [message]
--- a/pytchat/processors/default/renderer/membership.py
+++ b/pytchat/processors/default/renderer/membership.py
@@ -0,0 +1,18 @@
+from .base import BaseRenderer
+
+
+class LiveChatMembershipItemRenderer(BaseRenderer):
+    def settype(self):
+        self.chat.type = "newSponsor"
+
+    def get_authordetails(self):
+        super().get_authordetails()
+        self.chat.author.isChatSponsor = True
+
+    def get_message(self, item):
+        try:
+            message = ''.join([mes.get("text", "")
+                           for mes in item["headerSubtext"]["runs"]])
+        except KeyError:
+            return "Welcome New Member!", ["Welcome New Member!"]
+        return message, [message]
--- a/pytchat/processors/default/renderer/paidmessage.py
+++ b/pytchat/processors/default/renderer/paidmessage.py
@@ -3,34 +3,45 @@ from . import currency
 from .base import BaseRenderer
 superchat_regex = re.compile(r"^(\D*)(\d{1,3}(,\d{3})*(\.\d*)*\b)$")

-class LiveChatPaidMessageRenderer(BaseRenderer):
-    def __init__(self, item):
-        super().__init__(item, "superChat")

+class Colors:
+    pass
+
+
+class LiveChatPaidMessageRenderer(BaseRenderer):
+    def settype(self):
+        self.chat.type = "superChat"

    def get_snippet(self):
        super().get_snippet()
-
-        self.author.name = self.renderer["authorName"]["simpleText"]
-
-        amountDisplayString, symbol, amount =(
-            self.get_amountdata(self.renderer)
+        amountDisplayString, symbol, amount = (
+            self.get_amountdata(self.item)
        )
-        self.message = self.get_message(self.renderer)
-        self.amountValue= amount
-        self.amountString = amountDisplayString
-        self.currency= currency.symbols[symbol]["fxtext"] if currency.symbols.get(symbol) else symbol
-        self.bgColor= self.renderer.get("bodyBackgroundColor", 0)
-            
+        self.chat.amountValue = amount
+        self.chat.amountString = amountDisplayString
+        self.chat.currency = currency.symbols[symbol]["fxtext"] if currency.symbols.get(
+            symbol) else symbol
+        self.chat.bgColor = self.item.get("bodyBackgroundColor", 0)
+        self.chat.colors = self.get_colors()

-
-    def get_amountdata(self,renderer):
-        amountDisplayString = renderer["purchaseAmountText"]["simpleText"]
+    def get_amountdata(self, item):
+        amountDisplayString = item["purchaseAmountText"]["simpleText"]
        m = superchat_regex.search(amountDisplayString)
        if m:
            symbol = m.group(1)
-            amount = float(m.group(2).replace(',',''))
+            amount = float(m.group(2).replace(',', ''))
        else:
            symbol = ""
            amount = 0.0
-        return amountDisplayString, symbol, amount
+        return amountDisplayString, symbol, amount
+
+    def get_colors(self):
+        item = self.item
+        colors = Colors()
+        colors.headerBackgroundColor = item.get("headerBackgroundColor", 0)
+        colors.headerTextColor = item.get("headerTextColor", 0)
+        colors.bodyBackgroundColor = item.get("bodyBackgroundColor", 0)
+        colors.bodyTextColor = item.get("bodyTextColor", 0)
+        colors.timestampColor = item.get("timestampColor", 0)
+        colors.authorNameTextColor = item.get("authorNameTextColor", 0)
+        return colors
--- a/pytchat/processors/default/renderer/paidsticker.py
+++ b/pytchat/processors/default/renderer/paidsticker.py
@@ -3,41 +3,45 @@ from . import currency
 from .base import BaseRenderer
 superchat_regex = re.compile(r"^(\D*)(\d{1,3}(,\d{3})*(\.\d*)*\b)$")

-class LiveChatPaidStickerRenderer(BaseRenderer):
-    def __init__(self, item):
-        super().__init__(item, "superSticker")

+class Colors2:
+    pass
+
+
+class LiveChatPaidStickerRenderer(BaseRenderer):
+    def settype(self):
+        self.chat.type = "superSticker"

    def get_snippet(self):
        super().get_snippet()
-
-        self.author.name = self.renderer["authorName"]["simpleText"]
-
-        amountDisplayString, symbol, amount =(
-            self.get_amountdata(self.renderer)
+        amountDisplayString, symbol, amount = (
+            self.get_amountdata(self.item)
        )
-        self.message = ""
-        self.amountValue = amount
-        self.amountString = amountDisplayString
-        self.currency = currency.symbols[symbol]["fxtext"] if currency.symbols.get(symbol) else symbol
-        self.bgColor = self.renderer.get("moneyChipBackgroundColor", 0)
-        self.sticker = "https:"+self.renderer["sticker"]["thumbnails"][0]["url"]
-            
+        self.chat.amountValue = amount
+        self.chat.amountString = amountDisplayString
+        self.chat.currency = currency.symbols[symbol]["fxtext"] if currency.symbols.get(
+            symbol) else symbol
+        self.chat.bgColor = self.item.get("backgroundColor", 0)
+        self.chat.sticker = "".join(("https:",
+            self.item["sticker"]["thumbnails"][0]["url"]))
+        self.chat.colors = self.get_colors()

-
-    def get_amountdata(self,renderer):
-        amountDisplayString = renderer["purchaseAmountText"]["simpleText"]
+    def get_amountdata(self, item):
+        amountDisplayString = item["purchaseAmountText"]["simpleText"]
        m = superchat_regex.search(amountDisplayString)
        if m:
            symbol = m.group(1)
-            amount = float(m.group(2).replace(',',''))
+            amount = float(m.group(2).replace(',', ''))
        else:
            symbol = ""
            amount = 0.0
        return amountDisplayString, symbol, amount

-
- 
-
- 
-
+    def get_colors(self):
+        item = self.item
+        colors = Colors2()
+        colors.moneyChipBackgroundColor = item.get("moneyChipBackgroundColor", 0)
+        colors.moneyChipTextColor = item.get("moneyChipTextColor", 0)
+        colors.backgroundColor = item.get("backgroundColor", 0)
+        colors.authorNameTextColor = item.get("authorNameTextColor", 0)
+        return colors
--- a/pytchat/processors/default/renderer/textmessage.py
+++ b/pytchat/processors/default/renderer/textmessage.py
@@ -1,4 +1,6 @@
 from .base import BaseRenderer
+
+
 class LiveChatTextMessageRenderer(BaseRenderer):
-    def __init__(self, item):
-        super().__init__(item, "textMessage")
+    def settype(self):
+        self.chat.type = "textMessage"
--- a/pytchat/processors/dummy_processor.py
+++ b/pytchat/processors/dummy_processor.py
@@ -1,8 +1,10 @@
 from .chat_processor import ChatProcessor

+
 class DummyProcessor(ChatProcessor):
    '''
    Dummy processor just returns received chat_components directly.
    '''
+
    def process(self, chat_components: list):
        return chat_components
--- a/pytchat/processors/html_archiver.py
+++ b/pytchat/processors/html_archiver.py
@@ -0,0 +1,170 @@
+import httpx
+import os
+import re
+import time
+from base64 import standard_b64encode
+from concurrent.futures import ThreadPoolExecutor
+from .chat_processor import ChatProcessor
+from .default.processor import DefaultProcessor
+from ..exceptions import UnknownConnectionError
+import tempfile
+
+PATTERN = re.compile(r"(.*)\(([0-9]+)\)$")
+
+fmt_headers = ['datetime', 'elapsed', 'authorName',
+               'message', 'superchat', 'type', 'authorChannel']
+
+HEADER_HTML = '''
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
+'''
+
+TABLE_CSS = '''
+table.css {
+ border-collapse: collapse;
+}
+ 
+table.css thead{
+ border-collapse: collapse;
+ border: 1px solid #000
+}
+ 
+table.css tr td{
+ padding: 0.3em;
+ border: 1px solid #000
+}
+
+table.css th{
+ padding: 0.3em;
+ border: 1px solid #000
+}
+'''
+
+
+class HTMLArchiver(ChatProcessor):
+    '''
+    HTMLArchiver saves chat data as HTML table format.
+    '''
+    def __init__(self, save_path, callback=None):
+        super().__init__()
+        self.client = httpx.Client(http2=True)
+        self.save_path = self._checkpath(save_path)
+        self.processor = DefaultProcessor()
+        self.emoji_table = {}  # dict for custom emojis. key: emoji_id, value: base64 encoded image binary.
+        self.callback = callback
+        self.executor = ThreadPoolExecutor(max_workers=10)
+        self.tmp_fp = tempfile.NamedTemporaryFile(mode="a", encoding="utf-8", delete=False)
+        self.tmp_filename = self.tmp_fp.name
+        self.counter = 0
+
+    def _checkpath(self, filepath):
+        splitter = os.path.splitext(os.path.basename(filepath))
+        body = splitter[0]
+        extention = splitter[1]
+        newpath = filepath
+        counter = 1
+        while os.path.exists(newpath):
+            match = re.search(PATTERN, body)
+            if match:
+                counter = int(match[2]) + 1
+                num_with_bracket = f'({str(counter)})'
+                body = f'{match[1]}{num_with_bracket}'
+            else:
+                body = f'{body}({str(counter)})'
+            newpath = os.path.join(os.path.dirname(filepath), body + extention)
+        return newpath
+
+    def process(self, chat_components: list):
+        """
+        Returns
+        ----------
+        dict :
+            save_path : str :
+                Actual save path of file.
+            total_lines : int :
+                Count of total lines written to the file.
+        """
+        if chat_components is None or len(chat_components) == 0:
+            return self.save_path, self.counter
+        for c in self.processor.process(chat_components).items:
+            self.tmp_fp.write(
+                self._parse_html_line((
+                    c.datetime,
+                    c.elapsedTime,
+                    c.author.name,
+                    self._parse_message(c.messageEx),
+                    c.amountString,
+                    c.author.type,
+                    c.author.channelId)
+                )
+            )
+            if self.callback:
+                self.callback(None, 1)
+            self.counter += 1
+        return self.save_path, self.counter
+
+    def _parse_html_line(self, raw_line):
+        return ''.join(('<tr>',
+                        ''.join(''.join(('<td>', cell, '</td>')) for cell in raw_line),
+                        '</tr>\n'))
+
+    def _parse_table_header(self, raw_line):
+        return ''.join(('<thead><tr>',
+                        ''.join(''.join(('<th>', cell, '</th>')) for cell in raw_line),
+                        '</tr></thead>\n'))
+        
+    def _parse_message(self, message_items: list) -> str:
+        return ''.join(''.join(('<span class="', self._set_emoji_table(item), '" title="', item['txt'], '"></span>'))
+                       if type(item) is dict else item
+                       for item in message_items)
+
+    def _encode_img(self, url):
+        err = None
+        for _ in range(5):
+            try:
+                resp = self.client.get(url, timeout=30)
+                break
+            except httpx.HTTPError as e:
+                err = e
+                time.sleep(3)
+        else:
+            raise UnknownConnectionError(str(err))
+
+        return standard_b64encode(resp.content).decode()
+
+    def _set_emoji_table(self, item: dict):
+        emoji_id = ''.join(('Z', item['id'])) if 48 <= ord(item['id'][0]) <= 57 else item['id']
+        if emoji_id not in self.emoji_table:
+            self.emoji_table.setdefault(emoji_id, self.executor.submit(self._encode_img, item['url']))
+        return emoji_id
+
+    def _stylecode(self, name, code, width, height):
+        return ''.join((".", name, " { display: inline-block; background-image: url(data:image/png;base64,",
+                        code, "); background-repeat: no-repeat; width: ",
+                        str(width), "; height: ", str(height), ";}"))
+    
+    def _create_styles(self):
+        return '\n'.join(('<style type="text/css">',
+                          TABLE_CSS,
+                          '\n'.join(self._stylecode(key, self.emoji_table[key].result(), 24, 24)
+                                for key in self.emoji_table.keys()),
+                          '</style>\n'))
+    
+    def finalize(self):
+        if self.tmp_fp:
+            self.tmp_fp.flush()
+            self.tmp_fp = None
+        with open(self.save_path, mode='w', encoding='utf-8') as outfile:
+            # write header
+            outfile.writelines((
+                HEADER_HTML, self._create_styles(), '</head>\n',
+                '<body>\n', '<table class="css">\n',
+                self._parse_table_header(fmt_headers)))
+            # write body
+            fp = open(self.tmp_filename, mode="r", encoding="utf-8")
+            for line in fp:
+                outfile.write(line)
+            outfile.write('</table>\n</body>\n</html>')
+            fp.close()
+        os.remove(self.tmp_filename)
--- a/pytchat/processors/json_display_processor.py
+++ b/pytchat/processors/json_display_processor.py
@@ -1,13 +0,0 @@
-import json
-from .chat_processor import ChatProcessor
-
-class JsonDisplayProcessor(ChatProcessor):
-
-    def process(self,chat_components: list):
-        if chat_components:
-            for component in chat_components:
-                chatdata = component.get('chatdata')
-                if chatdata:
-                    for chat in chatdata:
-                        print(json.dumps(chat,ensure_ascii=False)[:200])
-
--- a/pytchat/processors/jsonfile_archive_processor.py
+++ b/pytchat/processors/jsonfile_archive_processor.py
@@ -1,46 +0,0 @@
-import json
-import os
-import datetime
-from .chat_processor import ChatProcessor
-
-class JsonfileArchiveProcessor(ChatProcessor):
-    def __init__(self,filepath):
-        super().__init__()
-        if os.path.exists(filepath):
-            print('filepath is already exists!: ')
-            print('  '+filepath)
-            newpath=os.path.dirname(filepath) + \
-                '/'+datetime.datetime.now() \
-                .strftime('%Y-%m-%d %H-%M-%S')+'.data'
-
-            print('created alternate filename:')
-            print('   '+newpath)
-            self.filepath = newpath
-        else:
-            print('filepath: '+filepath)
-            self.filepath = filepath
-
-    def process(self,chat_components: list):
-        if chat_components:
-            with open(self.filepath, mode='a', encoding = 'utf-8') as f:
-                for component in chat_components:
-                    if component:
-                        chatdata = component.get('chatdata')
-                        for action in chatdata:
-                            if action:
-                                if action.get("addChatItemAction"):
-                                    if action["addChatItemAction"]["item"].get(
-                                    "liveChatViewerEngagementMessageRenderer"):
-                                        continue
-                                s = json.dumps(action,ensure_ascii = False)
-                                #print(s[:200])
-                                f.writelines(s+'\n')
-
-    def _parsedir(self,_dir):
-        if _dir[-1]=='\\' or _dir[-1]=='/':
-            separator =''
-        else:
-            separator ='/'
-        os.makedirs(_dir + separator, exist_ok=True)
-        return _dir  + separator
-
--- a/pytchat/processors/jsonfile_archiver.py
+++ b/pytchat/processors/jsonfile_archiver.py
@@ -0,0 +1,69 @@
+import json
+import os
+import re
+from .chat_processor import ChatProcessor
+
+PATTERN = re.compile(r"(.*)\(([0-9]+)\)$")
+
+
+class JsonfileArchiver(ChatProcessor):
+    """
+    JsonfileArchiver saves chat data as text of JSON lines.
+
+    Parameter:
+    ----------
+    save_path : str :
+        save path of file.If a file with the same name exists,
+        it is automatically saved under a different name
+        with suffix '(number)'
+    """
+
+    def __init__(self, save_path):
+        super().__init__()
+        self.save_path = self._checkpath(save_path)
+        self.line_counter = 0
+
+    def process(self, chat_components: list):
+        """
+        Returns
+        ----------
+        dict :
+            save_path : str :
+                Actual save path of file.
+            total_lines : int :
+                count of total lines written to the file.
+        """
+        if chat_components is None:
+            return
+        with open(self.save_path, mode='a', encoding='utf-8') as f:
+            for component in chat_components:
+                if component is None:
+                    continue
+                chatdata = component.get('chatdata')
+                if chatdata is None:
+                    continue
+                for action in chatdata:
+                    if action is None:
+                        continue
+                    json_line = json.dumps(action, ensure_ascii=False)
+                    f.writelines(json_line + '\n')
+                    self.line_counter += 1
+            return {"save_path": self.save_path,
+                    "total_lines": self.line_counter}
+
+    def _checkpath(self, filepath):
+        splitter = os.path.splitext(os.path.basename(filepath))
+        body = splitter[0]
+        extention = splitter[1]
+        newpath = filepath
+        counter = 0
+        while os.path.exists(newpath):
+            match = re.search(PATTERN, body)
+            if match:
+                counter = int(match[2]) + 1
+                num_with_bracket = f'({str(counter)})'
+                body = f'{match[1]}{num_with_bracket}'
+            else:
+                body = f'{body}({str(counter)})'
+            newpath = os.path.join(os.path.dirname(filepath), body + extention)
+        return newpath
--- a/pytchat/processors/simple_display_processor.py
+++ b/pytchat/processors/simple_display_processor.py
@@ -1,47 +1,49 @@
-import json
-import os
-import traceback
-import datetime
-import time
 from .chat_processor import ChatProcessor
-##version 2
+
+
 class SimpleDisplayProcessor(ChatProcessor):
-    
+
    def process(self, chat_components: list):
        chatlist = []
        timeout = 0
-        
+
        if chat_components is None:
-            return {"timeout":timeout, "chatlist":chatlist}
+            return {"timeout": timeout, "chatlist": chatlist}
        for component in chat_components:
            timeout += component.get('timeout', 0)
            chatdata = component.get('chatdata')
-            
-            if chatdata is None:break
-            for action in chatdata:
-                if action is None:continue
-                if action.get('addChatItemAction') is None:continue
-                if action['addChatItemAction'].get('item') is None:continue

-                root = action['addChatItemAction']['item'].get('liveChatTextMessageRenderer')
-                
+            if chatdata is None:
+                break
+            for action in chatdata:
+                if action is None:
+                    continue
+                if action.get('addChatItemAction') is None:
+                    continue
+                if action['addChatItemAction'].get('item') is None:
+                    continue
+
+                root = action['addChatItemAction']['item'].get(
+                    'liveChatTextMessageRenderer')
+
                if root:
                    author_name = root['authorName']['simpleText']
                    message = self._parse_message(root.get('message'))
                    purchase_amount_text = ''
                else:
-                    root = ( action['addChatItemAction']['item'].get('liveChatPaidMessageRenderer') or 
-                            action['addChatItemAction']['item'].get('liveChatPaidStickerRenderer') )
+                    root = (action['addChatItemAction']['item'].get('liveChatPaidMessageRenderer')
+                            or action['addChatItemAction']['item'].get('liveChatPaidStickerRenderer'))
                    if root:
                        author_name = root['authorName']['simpleText']
                        message = self._parse_message(root.get('message'))
                        purchase_amount_text = root['purchaseAmountText']['simpleText']
                    else:
                        continue
-                chatlist.append(f'[{author_name}]:  {message}  {purchase_amount_text}')
-        return {"timeout":timeout, "chatlist":chatlist}
-    
-    def _parse_message(self,message):
+                chatlist.append(
+                    f'[{author_name}]:  {message}  {purchase_amount_text}')
+        return {"timeout": timeout, "chatlist": chatlist}
+
+    def _parse_message(self, message):
        if message is None:
            return ''
        if message.get('simpleText'):
@@ -51,11 +53,9 @@ class SimpleDisplayProcessor(ChatProcessor):
            tmp = ''
            for run in runs:
                if run.get('emoji'):
-                    tmp+=(run['emoji']['shortcuts'][0])
+                    tmp += (run['emoji']['shortcuts'][0])
                elif run.get('text'):
-                    tmp+=(run['text'])
+                    tmp += (run['text'])
            return tmp
        else:
            return ''
-
-
--- a/pytchat/processors/speed/init.py
+++ b/pytchat/processors/speed/init.py
--- a/pytchat/processors/speed/calculator.py
+++ b/pytchat/processors/speed/calculator.py
@@ -3,12 +3,14 @@ speed_calculator.py
 チャットの勢いを算出するChatProcessor
 Calculate speed of chat.
 """
-import calendar, datetime, pytz
-from .chat_processor import ChatProcessor
+import time
+from .. chat_processor import ChatProcessor
+
+
 class RingQueue:
    """
    リング型キュー
-    
+
    Attributes
    ----------
    items : list
@@ -21,10 +23,10 @@ class RingQueue:
        キュー内に余裕があるか。キュー内のアイテム個数が、キューの最大個数未満であればTrue。
    """

-    def __init__(self, capacity):    
+    def __init__(self, capacity):
        """
        コンストラクタ
-        
+
        Parameter
        ----------
            capacity:このキューに格納するアイテムの最大個数。
@@ -50,17 +52,17 @@ class RingQueue:
        """
        if self.mergin:
            self.items.append(item)
-            self.last_pos = len(self.items)-1
-            if self.last_pos == self.capacity-1:
+            self.last_pos = len(self.items) - 1
+            if self.last_pos == self.capacity - 1:
                self.mergin = False
            return
        self.last_pos += 1
-        if self.last_pos > self.capacity-1:
+        if self.last_pos > self.capacity - 1:
            self.last_pos = 0
        self.items[self.last_pos] = item
-        
+
        self.first_pos += 1
-        if self.first_pos > self.capacity-1:
+        if self.first_pos > self.capacity - 1:
            self.first_pos = 0

    def get(self):
@@ -76,11 +78,12 @@ class RingQueue:

    def item_count(self):
        return len(self.items)
-        
+
+
 class SpeedCalculator(ChatProcessor, RingQueue):
    """
    チャットの勢いを計算する。
-    
+
    一定期間のチャットデータのうち、最初のチャットの投稿時刻と
    最後のチャットの投稿時刻の差を、チャット数で割り返し
    1分あたりの速度に換算する。
@@ -91,7 +94,7 @@ class SpeedCalculator(ChatProcessor, RingQueue):
        RingQueueに格納するチャット勢い算出用データの最大数
    """

-    def __init__(self, capacity = 10):
+    def __init__(self, capacity=10):
        super().__init__(capacity)
        self.speed = 0

@@ -105,7 +108,6 @@ class SpeedCalculator(ChatProcessor, RingQueue):
            self._put_chatdata(chatdata)
            self.speed = self._calc_speed()
        return self.speed
-                

    def _calc_speed(self):
        """
@@ -116,14 +118,13 @@ class SpeedCalculator(ChatProcessor, RingQueue):
        ---------------------------
            チャット速度（１分間で換算したチャット数）
        """
-        try:        
-            #キュー内の総チャット数
+        try:
+            # キュー内の総チャット数
            total = sum(item['chat_count'] for item in self.items)
-            #キュー内の最初と最後のチャットの時間差
-            duration = (self.items[self.last_pos]['endtime'] 
-                        - self.items[self.first_pos]['starttime'])
+            # キュー内の最初と最後のチャットの時間差
+            duration = (self.items[self.last_pos]['endtime'] - self.items[self.first_pos]['starttime'])
            if duration != 0:
-                return int(total*60/duration)
+                return int(total * 60 / duration)
            return 0
        except IndexError:
            return 0
@@ -143,62 +144,60 @@ class SpeedCalculator(ChatProcessor, RingQueue):
            '''
            チャットデータがない場合に空のデータをキューに投入する。
            '''
-            timestamp_now =  calendar.timegm(datetime.datetime.
-            now(pytz.utc).utctimetuple())
+            timestamp_now = int(time.time())
            self.put({
-                'chat_count':0,
-                'starttime':int(timestamp_now),
-                'endtime':int(timestamp_now)
+                'chat_count': 0,
+                'starttime': int(timestamp_now),
+                'endtime': int(timestamp_now)
            })

-        def _get_timestamp(action :dict):
+        def _get_timestamp(action: dict):
            """
            チャットデータから時刻データを取り出す。
            """
            try:
                item = action['addChatItemAction']['item']
                timestamp = int(item[list(item.keys())[0]]['timestampUsec'])
-            except (KeyError,TypeError):
+            except (KeyError, TypeError):
                return None
            return timestamp

-        if actions is None or len(actions)==0:
+        if actions is None or len(actions) == 0:
            _put_emptydata()
-            return 
-           
-        #actions内の時刻データを持つチャットデータの数
-        counter=0        
-        #actions内の最初のチャットデータの時刻
-        starttime= None
-        #actions内の最後のチャットデータの時刻
-        endtime=None
-        
+            return
+
+        # actions内の時刻データを持つチャットデータの数
+        counter = 0
+        # actions内の最初のチャットデータの時刻
+        starttime = None
+        # actions内の最後のチャットデータの時刻
+        endtime = None
+
        for action in actions:
-            #チャットデータからtimestampUsecを読み取る
+            # チャットデータからtimestampUsecを読み取る
            gettime = _get_timestamp(action)
-            
-            #時刻のないデータだった場合は次の行のデータで読み取り試行
+
+            # 時刻のないデータだった場合は次の行のデータで読み取り試行
            if gettime is None:
                continue
-            
-            #最初に有効な時刻を持つデータのtimestampをstarttimeに設定
+
+            # 最初に有効な時刻を持つデータのtimestampをstarttimeに設定
            if starttime is None:
                starttime = gettime
-        
-            #最後のtimestampを設定(途中で時刻のないデータの場合もあるので上書きしていく)
+
+            # 最後のtimestampを設定(途中で時刻のないデータの場合もあるので上書きしていく)
            endtime = gettime
-        
-            #チャットの数をインクリメント
+
+            # チャットの数をインクリメント
            counter += 1

-        #チャット速度用のデータをRingQueueに送る
+        # チャット速度用のデータをRingQueueに送る
        if starttime is None or endtime is None:
            _put_emptydata()
-            return 
-            
-        self.put({
-            'chat_count':counter,
-            'starttime':int(starttime/1000000),
-            'endtime':int(endtime/1000000)
-        })
+            return

+        self.put({
+            'chat_count': counter,
+            'starttime': int(starttime / 1000000),
+            'endtime': int(endtime / 1000000)
+        })
--- a/pytchat/processors/superchat/init.py
+++ b/pytchat/processors/superchat/init.py
--- a/pytchat/processors/superchat/calculator.py
+++ b/pytchat/processors/superchat/calculator.py
@@ -0,0 +1,75 @@
+import re
+from pytchat.processors.chat_processor import ChatProcessor
+
+superchat_regex = re.compile(r"^(\D*)(\d{1,3}(,\d{3})*(\.\d*)*\b)$")
+
+items_paid = [
+    'addChatItemAction',
+    'item',
+    'liveChatPaidMessageRenderer'
+]
+
+items_sticker = [
+    'addChatItemAction',
+    'item',
+    'liveChatPaidStickerRenderer'
+]
+
+
+class SuperchatCalculator(ChatProcessor):
+    """
+    Calculate the amount of SuperChat by currency.
+    """
+
+    def __init__(self):
+        self.results = {}
+
+    def process(self, chat_components: list):
+        """
+        Return
+        ------------
+        results : dict :
+            List of amount by currency.
+            key: currency symbol, value: total amount.
+        """
+        if chat_components is None:
+            return self.results
+        for component in chat_components:
+            chatdata = component.get('chatdata')
+            if chatdata is None:
+                continue
+            for action in chatdata:
+                renderer = self._get_item(action, items_paid) or \
+                    self._get_item(action, items_sticker)
+                if renderer is None:
+                    continue
+                symbol, amount = self._parse(renderer)
+                self.results.setdefault(symbol, 0)
+                self.results[symbol] += amount
+        return self.results
+
+    def _parse(self, renderer):
+        purchase_amount_text = renderer["purchaseAmountText"]["simpleText"]
+        m = superchat_regex.search(purchase_amount_text)
+        if m:
+            symbol = m.group(1)
+            amount = float(m.group(2).replace(',', ''))
+        else:
+            symbol = ""
+            amount = 0.0
+        return symbol, amount
+
+    def _get_item(self, dict_body, items: list):
+        for item in items:
+            if dict_body is None:
+                break
+            if isinstance(dict_body, dict):
+                dict_body = dict_body.get(item)
+                continue
+            if isinstance(item, int) and \
+               isinstance(dict_body, list) and \
+               len(dict_body) > item:
+                dict_body = dict_body[item]
+                continue
+            return None
+        return dict_body
--- a/pytchat/processors/tsv_archiver.py
+++ b/pytchat/processors/tsv_archiver.py
@@ -0,0 +1,67 @@
+import csv
+import os
+import re
+from .chat_processor import ChatProcessor
+from .default.processor import DefaultProcessor
+
+PATTERN = re.compile(r"(.*)\(([0-9]+)\)$")
+fmt_headers = ['datetime', 'elapsed', 'authorName', 'message',
+               'superchatAmount', 'authorType', 'authorChannel']
+
+
+class TSVArchiver(ChatProcessor):
+    '''
+    TsvArchiver saves chat data as Tab Separated Values format text.
+    '''
+
+    def __init__(self, save_path):
+        super().__init__()
+        self.save_path = self._checkpath(save_path)
+        with open(self.save_path, mode='a', encoding='utf-8') as f:
+            writer = csv.writer(f, delimiter='\t')
+            writer.writerow(fmt_headers)
+        self.processor = DefaultProcessor()
+
+    def _checkpath(self, filepath):
+        splitter = os.path.splitext(os.path.basename(filepath))
+        body = splitter[0]
+        extention = splitter[1]
+        newpath = filepath
+        counter = 0
+        while os.path.exists(newpath):
+            match = re.search(PATTERN, body)
+            if match:
+                counter = int(match[2]) + 1
+                num_with_bracket = f'({str(counter)})'
+                body = f'{match[1]}{num_with_bracket}'
+            else:
+                body = f'{body}({str(counter)})'
+            newpath = os.path.join(os.path.dirname(filepath), body + extention)
+        return newpath
+
+    def process(self, chat_components: list):
+        """
+        Returns
+        ----------
+        dict :
+            save_path : str :
+                Actual save path of file.
+            total_lines : int :
+                count of total lines written to the file.
+        """
+        if chat_components is None or len(chat_components) == 0:
+            return
+
+        with open(self.save_path, mode='a', encoding='utf-8') as f:
+            writer = csv.writer(f, delimiter='\t')
+            chats = self.processor.process(chat_components).items
+            for c in chats:
+                writer.writerow([
+                    c.datetime,
+                    c.elapsedTime,
+                    c.author.name,
+                    c.message,
+                    c.amountString,
+                    c.author.type,
+                    c.author.channelId
+                ])
--- a/pytchat/util/init.py
+++ b/pytchat/util/init.py
@@ -1,15 +1,147 @@
-import requests,json,datetime
+import datetime
+import httpx
+import json
+import os
+import re
+from urllib.parse import quote
 from .. import config
+from .. exceptions import InvalidVideoIdException

-def download(url):
-    _session = requests.Session()
+PATTERN = re.compile(r"(.*)\(([0-9]+)\)$")
+
+PATTERN_YTURL = re.compile(r"((?<=(v|V)/)|(?<=be/)|(?<=(\?|\&)v=)|(?<=embed/))([\w-]+)")
+
+PATTERN_CHANNEL = re.compile(r"\\\"channelId\\\":\\\"(.{24})\\\"")
+
+PATTERN_M_CHANNEL = re.compile(r"\"channelId\":\"(.{24})\"")
+
+YT_VIDEO_ID_LENGTH = 11
+
+CLIENT_VERSION = ''.join(("2.", (datetime.datetime.today() - datetime.timedelta(days=1)).strftime("%Y%m%d"), ".01.00"))
+
+UA = config.headers["user-agent"]
+
+
+def extract(url):
+    _session = httpx.Client(http2=True)
    html = _session.get(url, headers=config.headers)
    with open(str(datetime.datetime.now().strftime('%Y-%m-%d %H-%M-%S')
-                        )+'test.json',mode ='w',encoding='utf-8') as f:
-        json.dump(html.json(),f,ensure_ascii=False)
+                  ) + 'test.json', mode='w', encoding='utf-8') as f:
+        json.dump(html.json(), f, ensure_ascii=False)


-def save(data,filename,extention):
-    with open(filename+"_"+(datetime.datetime.now().strftime('%Y-%m-%d %H-%M-%S')
-                            )+extention,mode ='w',encoding='utf-8') as f:
+def save(data, filename, extention) -> str:
+    save_filename = filename + "_" + \
+        (datetime.datetime.now().strftime('%Y-%m-%d %H-%M-%S')) + extention
+    with open(save_filename, mode='w', encoding='utf-8') as f:
        f.writelines(data)
+    return save_filename
+
+
+def checkpath(filepath):
+    splitter = os.path.splitext(os.path.basename(filepath))
+    body = splitter[0]
+    extention = splitter[1]
+    newpath = filepath
+    counter = 1
+    while os.path.exists(newpath):
+        match = re.search(PATTERN, body)
+        if match:
+            counter = int(match[2]) + 1
+            num_with_bracket = f'({str(counter)})'
+            body = f'{match[1]}{num_with_bracket}'
+        else:
+            body = f'{body}({str(counter)})'
+        newpath = os.path.join(os.path.dirname(filepath), body + extention)
+    return newpath
+
+
+def get_param(continuation, replay=False, offsetms: int = 0, dat=''):
+    if offsetms < 0:
+        offsetms = 0
+    ret = {
+        "context": {
+            "client": {
+                "visitorData": dat,
+                "userAgent": UA,
+                "clientName": "WEB",
+                "clientVersion": CLIENT_VERSION,
+            },
+
+        },
+        "continuation": continuation,
+    }
+    if replay:
+        ret.setdefault("currentPlayerState", {
+                       "playerOffsetMs": str(int(offsetms))})
+    return ret
+
+
+def extract_video_id(url_or_id: str) -> str:
+    ret = ''
+    if '[' in url_or_id:
+        url_or_id = url_or_id.replace('[', '').replace(']', '')
+
+    if type(url_or_id) != str:
+        raise TypeError(f"{url_or_id}: URL or VideoID must be str, but {type(url_or_id)} is passed.")
+    if len(url_or_id) == YT_VIDEO_ID_LENGTH:
+        return url_or_id
+    match = re.search(PATTERN_YTURL, url_or_id)
+    if match is None:
+        raise InvalidVideoIdException(f"Invalid video id: {url_or_id}")
+    try:
+        ret = match.group(4)
+    except IndexError:
+        raise InvalidVideoIdException(f"Invalid video id: {url_or_id}")
+
+    if ret is None or len(ret) != YT_VIDEO_ID_LENGTH:
+        raise InvalidVideoIdException(f"Invalid video id: {url_or_id}")
+    return ret
+
+
+def get_channelid(client, video_id):
+    resp = client.get("https://www.youtube.com/embed/{}".format(quote(video_id)), headers=config.headers)  
+    match = re.search(PATTERN_CHANNEL, resp.text)
+    try:
+        if match is None:
+            raise IndexError
+        ret = match.group(1)
+    except IndexError:
+        ret = get_channelid_2nd(client, video_id)
+    return ret
+
+
+def get_channelid_2nd(client, video_id):
+    resp = client.get("https://m.youtube.com/watch?v={}".format(quote(video_id)), headers=config.m_headers)  
+    
+    match = re.search(PATTERN_M_CHANNEL, resp.text)
+    if match is None:
+        raise InvalidVideoIdException(f"Cannot find channel id for video id:{video_id}. This video id seems to be invalid.")
+    try:
+        ret = match.group(1)
+    except IndexError:
+        raise InvalidVideoIdException(f"Invalid video id: {video_id}")
+    return ret
+
+
+async def get_channelid_async(client, video_id):
+    resp = await client.get("https://www.youtube.com/embed/{}".format(quote(video_id)), headers=config.headers)  
+    match = re.search(PATTERN_CHANNEL, resp.text)
+    try:
+        if match is None:
+            raise IndexError
+        ret = match.group(1)
+    except IndexError:
+        ret = await get_channelid_async_2nd(client, video_id)
+    return ret
+
+async def get_channelid_async_2nd(client, video_id):
+    resp = await client.get("https://m.youtube.com/watch?v={}".format(quote(video_id)), headers=config.m_headers)  
+    match = re.search(PATTERN_M_CHANNEL, resp.text)
+    if match is None:
+        raise InvalidVideoIdException(f"Cannot find channel id for video id:{video_id}. This video id seems to be invalid.")
+    try:
+        ret = match.group(1)
+    except IndexError:
+        raise InvalidVideoIdException(f"Invalid video id: {video_id}")
+    return ret
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1 @@
-aiohttp
-pytz
-requests
-urllib3
+httpx[http2]==0.16.1
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,5 +1,2 @@
-aioresponses
-mock
-mocker
-pytest
-pytest-mock
+pytest-mock
+pytest-httpx
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,4 @@
 from setuptools import setup, find_packages, Command
-#from codecs import open as open_c
 from os import path, system, remove, rename, removedirs
 import re

@@ -8,28 +7,27 @@ package_name = "pytchat"
 root_dir = path.abspath(path.dirname(__file__))

 def _requirements():
-    return [name.rstrip() for name in open(path.join(root_dir, 'requirements.txt')).readlines()]
+    return [name.rstrip() 
+        for name in open(path.join(
+            root_dir, 'requirements.txt')).readlines()]

 def _test_requirements():
-    return [name.rstrip() for name in open(path.join(root_dir, 'requirements_test.txt')).readlines()]
-
-txt= ''
-with open('README.MD', 'r', encoding='utf-8') as f:
-    txt = f.read()
-
-with open('README1.MD', 'w', encoding='utf-8', newline='\n') as f:
-    f.write(txt)
-    
-remove("README.MD")
-rename("README1.MD","README.MD")
+    return [name.rstrip() 
+        for name in open(path.join(
+            root_dir, 'requirements_test.txt')).readlines()]

 with open(path.join(root_dir, package_name, '__init__.py')) as f:
    init_text = f.read()
-    version = re.search(r'__version__\s*=\s*[\'\"](.+?)[\'\"]', init_text).group(1)
-    license = re.search(r'__license__\s*=\s*[\'\"](.+?)[\'\"]', init_text).group(1)
-    author = re.search(r'__author__\s*=\s*[\'\"](.+?)[\'\"]', init_text).group(1)
-    author_email = re.search(r'__author_email__\s*=\s*[\'\"](.+?)[\'\"]', init_text).group(1)
-    url = re.search(r'__url__\s*=\s*[\'\"](.+?)[\'\"]', init_text).group(1)
+    version = re.search(
+        r'__version__\s*=\s*[\'\"](.+?)[\'\"]', init_text).group(1)
+    license = re.search(
+        r'__license__\s*=\s*[\'\"](.+?)[\'\"]', init_text).group(1)
+    author = re.search(
+        r'__author__\s*=\s*[\'\"](.+?)[\'\"]', init_text).group(1)
+    author_email = re.search(
+        r'__author_email__\s*=\s*[\'\"](.+?)[\'\"]', init_text).group(1)
+    url = re.search(
+        r'__url__\s*=\s*[\'\"](.+?)[\'\"]', init_text).group(1)

 assert version
 assert license
@@ -46,29 +44,24 @@ with open('README.md', encoding='utf-8') as f:


 setup(
-    name=package_name,
-    packages=find_packages(exclude=['*log.txt','*tests']),
-    version=version,
-    url=url,
    author=author,
    author_email=author_email,
-    long_description=long_description,
-    long_description_content_type='text/markdown',
-    license=license,
-    install_requires=_requirements(),
-    #tests_require=_test_requirements(),
-    description="a python library for fetching youtube live chat.",
    classifiers=[
        'Natural Language :: Japanese',
        'Development Status :: 4 - Beta',
        'Programming Language :: Python',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
        'Programming Language :: Python :: 3.7',        
+        'Programming Language :: Python :: 3.8',        
        'License :: OSI Approved :: MIT License',
    ],
+    description="a python library for fetching youtube live chat.",
+    install_requires=_requirements(),
    keywords='youtube livechat asyncio',
-
+    license=license,
+    long_description=long_description,
+    long_description_content_type='text/markdown',
+    name=package_name,
+    packages=find_packages(exclude=['*log.txt','*tests','*testrun']),
+    url=url,
+    version=version,
 )
--- a/tests/test_arcparam.py
+++ b/tests/test_arcparam.py
@@ -1,29 +0,0 @@
-import pytest
-from pytchat.parser.replay import Parser
-import pytchat.config as config
-import requests, json
-from pytchat.paramgen import arcparam
-
-def test_arcparam_0(mocker):
-    param = arcparam.getparam("01234567890",-1)
-    assert "op2w0wRyGjxDZzhhRFFvTE1ERXlNelExTmpjNE9UQWFFLXFvM2JrQkRRb0xNREV5TXpRMU5qYzRPVEFnQVElM0QlM0QoADAAOABAAEgEUhwIABAAGAAgACoOc3RhdGljY2hlY2tzdW1AAFgDYAFoAHIECAEQAHgA" == param
-
-
-def test_arcparam_1(mocker):
-    param = arcparam.getparam("01234567890", seektime = 100000)
-    assert "op2w0wR3GjxDZzhhRFFvTE1ERXlNelExTmpjNE9UQWFFLXFvM2JrQkRRb0xNREV5TXpRMU5qYzRPVEFnQVElM0QlM0QogNDbw_QCMAA4AEAASANSHAgAEAAYACAAKg5zdGF0aWNjaGVja3N1bUAAWANgAWgAcgQIARAAeAA%3D" == param
-
-def test_arcparam_2(mocker):
-    param = arcparam.getparam("SsjCnHOk-Sk")
-    url=f"https://www.youtube.com/live_chat_replay/get_live_chat_replay?continuation={param}&pbj=1"
-    resp = requests.Session().get(url,headers = config.headers)
-    jsn = json.loads(resp.text)
-    parser = Parser()
-    _ , chatdata = parser.parse(jsn)
-    test_id = chatdata[0]["addChatItemAction"]["item"]["liveChatTextMessageRenderer"]["id"]
-    print(test_id)
-    assert "CjoKGkNMYXBzZTdudHVVQ0Zjc0IxZ0FkTnFnQjVREhxDSnlBNHV2bnR1VUNGV0dnd2dvZDd3NE5aZy0w" == test_id
-
-def test_arcparam_3(mocker):
-    param = arcparam.getparam("01234567890")
-    assert "op2w0wRyGjxDZzhhRFFvTE1ERXlNelExTmpjNE9UQWFFLXFvM2JrQkRRb0xNREV5TXpRMU5qYzRPVEFnQVElM0QlM0QoATAAOABAAEgDUhwIABAAGAAgACoOc3RhdGljY2hlY2tzdW1AAFgDYAFoAHIECAEQAHgA" == param
--- a/tests/test_calculator_get_item.py
+++ b/tests/test_calculator_get_item.py
@@ -0,0 +1,140 @@
+from pytchat.processors.superchat.calculator import SuperchatCalculator
+
+get_item = SuperchatCalculator()._get_item
+
+dict_test = {
+    'root':{
+        'node0' : 'value0',
+        'node1' : 'value1',
+        'node2' : {
+            'node2-0' : 'value2-0'
+        },
+    
+        'node3' : [
+            {'node3-0' : 'value3-0'},
+            {'node3-1' : 
+                {'node3-1-0' : 'value3-1-0'}
+            }
+        ],
+        'node4' : [],
+        'node5' : [
+            [
+                {'node5-1-0' : 'value5-1-0'},
+                {'node5-1-1' : 'value5-1-1'},
+            ],
+                {'node5-0' : 'value5-0'},
+            
+        ]
+    }
+}
+
+items_test0 = [
+    'root',
+    'node1'
+]
+
+
+items_test_not_found0 = [
+    'root',
+    'other_data'
+]
+
+
+items_test_nest = [
+    'root',
+    'node2',
+    'node2-0'
+]
+
+items_test_list0 = [
+    'root',
+    'node3',
+    1,
+    'node3-1'
+]
+
+items_test_list1 = [
+    'root',
+    'node3',
+    1,
+    'node3-1',
+    'node3-1-0'
+]
+
+items_test_list2 = [
+    'root',
+    'node4',
+    None
+]
+
+items_test_list3 = [
+    'root',
+    'node4'
+]
+
+items_test_list_nest = [
+    'root',
+    'node5',
+    0,
+    1,
+    'node5-1-1'
+]
+
+items_test_list_nest_not_found1 = [
+    'root',
+    'node5',
+    0,
+    1,
+    'node5-1-1',
+    'nodez'
+]
+
+items_test_not_found1 = [
+    'root',
+    'node3',
+    2,
+    'node3-1',
+    'node3-1-0'
+]
+
+items_test_not_found2 = [
+    'root',
+    'node3',
+    2,
+    'node3-1',
+    'node3-1-0',
+    'nodex'
+]
+def test_get_items_0():
+    assert get_item(dict_test, items_test0) == 'value1'
+
+def test_get_items_1():
+    assert get_item(dict_test, items_test_not_found0) is None
+
+def test_get_items_2():
+    assert get_item(dict_test, items_test_nest) == 'value2-0'
+
+def test_get_items_3():
+    assert get_item(
+        dict_test, items_test_list0) ==  {'node3-1-0' : 'value3-1-0'}
+
+def test_get_items_4():
+    assert get_item(dict_test, items_test_list1) ==  'value3-1-0'
+
+def test_get_items_5():
+    assert get_item(dict_test, items_test_not_found1) ==  None
+
+def test_get_items_6():
+    assert get_item(dict_test, items_test_not_found2) ==  None
+
+def test_get_items_7():
+    assert get_item(dict_test, items_test_list2) ==  None
+
+def test_get_items_8():
+    assert get_item(dict_test, items_test_list_nest) ==  'value5-1-1'
+
+def test_get_items_9():
+    assert get_item(dict_test, items_test_list_nest_not_found1) ==  None
+
+def test_get_items_10():
+    assert get_item(dict_test, items_test_list3) ==  []
--- a/tests/test_calculator_parse.py
+++ b/tests/test_calculator_parse.py
@@ -0,0 +1,72 @@
+import json
+from pytchat.parser.live import Parser
+from pytchat.processors.superchat.calculator import SuperchatCalculator
+from pytchat.exceptions import ChatParseException
+parse = SuperchatCalculator()._parse
+
+
+def _open_file(path):
+    with open(path, mode='r', encoding='utf-8') as f:
+        return f.read()
+
+
+def load_chatdata(filepath):
+    parser = Parser(is_replay=True)
+    # print(json.loads(_open_file(filepath)))
+    contents = parser.get_contents(json.loads(_open_file(filepath)))[0]
+    return parser.parse(contents)[1]
+
+
+def test_parse_1():
+    renderer = {"purchaseAmountText": {"simpleText": "￥2,000"}}
+    symbol, amount = parse(renderer)
+    assert symbol == '￥'
+    assert amount == 2000.0
+
+
+def test_parse_2():
+    renderer = {"purchaseAmountText": {"simpleText": "ABC\x0a200"}}
+    symbol, amount = parse(renderer)
+    assert symbol == 'ABC\x0a'
+    assert amount == 200.0
+
+
+def test_process_0():
+    """
+    parse superchat data
+    """
+    chat_component = {
+        'video_id': '',
+        'timeout': 10,
+        'chatdata': load_chatdata(r"tests/testdata/calculator/superchat_0.json")
+    }
+    assert SuperchatCalculator().process([chat_component]) == {
+        '￥': 6800.0, '€': 2.0}
+
+
+def test_process_1():
+    """
+    parse no superchat data
+    """
+    chat_component = {
+        'video_id': '',
+        'timeout': 10,
+        'chatdata': load_chatdata(r"tests/testdata/calculator/text_only.json")
+    }
+    assert SuperchatCalculator().process([chat_component]) == {}
+
+
+def test_process_2():
+    """
+    try to parse after replay end
+    """
+    try:
+        chat_component = {
+            'video_id': '',
+            'timeout': 10,
+            'chatdata': load_chatdata(r"tests/testdata/calculator/replay_end.json")
+        }
+        assert False
+        SuperchatCalculator().process([chat_component])
+    except ChatParseException:
+        assert True
--- a/tests/test_compatible_processor.py
+++ b/tests/test_compatible_processor.py
@@ -1,55 +1,49 @@
 import json
-import pytest
-import asyncio,aiohttp
 from pytchat.parser.live import Parser
 from pytchat.processors.compatible.processor import CompatibleProcessor
-from pytchat.exceptions import (
-    NoLivechatRendererException,NoYtinitialdataException,
-    ResponseContextError, NoContentsException)
-
-from pytchat.processors.compatible.renderer.textmessage import LiveChatTextMessageRenderer
-from pytchat.processors.compatible.renderer.paidmessage import LiveChatPaidMessageRenderer
-from pytchat.processors.compatible.renderer.paidsticker import LiveChatPaidStickerRenderer
-from pytchat.processors.compatible.renderer.legacypaid import LiveChatLegacyPaidMessageRenderer

 parser = Parser(is_replay=False)

+
 def test_textmessage(mocker):
    '''api互換processorのテスト：通常テキストメッセージ'''
    processor = CompatibleProcessor()

    _json = _open_file("tests/testdata/compatible/textmessage.json")

-    _, chatdata = parser.parse(parser.get_contents(json.loads(_json)))
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
    data = {
-        "video_id" : "",
-        "timeout" : 7,
-        "chatdata" : chatdata
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
    }
    ret = processor.process([data])

-    assert ret["kind"]== "youtube#liveChatMessageListResponse"
-    assert ret["pollingIntervalMillis"]==data["timeout"]*1000
+    assert ret["kind"] == "youtube#liveChatMessageListResponse"
+    assert ret["pollingIntervalMillis"] == data["timeout"] * 1000
    assert ret.keys() == {
-        "kind",   "etag",   "pageInfo",   "nextPageToken","pollingIntervalMillis","items"
+        "kind", "etag", "pageInfo", "nextPageToken", "pollingIntervalMillis", "items"
    }
    assert ret["pageInfo"].keys() == {
-        "totalResults",   "resultsPerPage"
+        "totalResults", "resultsPerPage"
    }
    assert ret["items"][0].keys() == {
-        "kind",   "etag",   "id",   "snippet", "authorDetails"
+        "kind", "etag", "id", "snippet", "authorDetails"
    }
    assert ret["items"][0]["snippet"].keys() == {
-        'type', 'liveChatId', 'authorChannelId', 'publishedAt', 'hasDisplayContent', 'displayMessage', 'textMessageDetails'
+        'type', 'liveChatId', 'authorChannelId', 'publishedAt', 'hasDisplayContent', 'displayMessage',
+        'textMessageDetails'
    }
    assert ret["items"][0]["authorDetails"].keys() == {
-        'channelId', 'channelUrl', 'displayName', 'profileImageUrl', 'isVerified', 'isChatOwner', 'isChatSponsor', 'isChatModerator'
+        'channelId', 'channelUrl', 'displayName', 'profileImageUrl', 'isVerified', 'isChatOwner', 'isChatSponsor',
+        'isChatModerator'
    }
    assert ret["items"][0]["snippet"]["textMessageDetails"].keys() == {
        'messageText'
    }
-    assert "LCC." in ret["items"][0]["id"] 
-    assert ret["items"][0]["snippet"]["type"]=="textMessageEvent"
+    assert "LCC." in ret["items"][0]["id"]
+    assert ret["items"][0]["snippet"]["type"] == "textMessageEvent"
+

 def test_newsponcer(mocker):
    '''api互換processorのテスト：メンバ新規登録'''
@@ -57,34 +51,72 @@ def test_newsponcer(mocker):

    _json = _open_file("tests/testdata/compatible/newSponsor.json")

-    _, chatdata = parser.parse(parser.get_contents(json.loads(_json)))
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
    data = {
-        "video_id" : "",
-        "timeout" : 7,
-        "chatdata" : chatdata
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
    }
    ret = processor.process([data])

-    assert ret["kind"]== "youtube#liveChatMessageListResponse"
-    assert ret["pollingIntervalMillis"]==data["timeout"]*1000
+    assert ret["kind"] == "youtube#liveChatMessageListResponse"
+    assert ret["pollingIntervalMillis"] == data["timeout"] * 1000
    assert ret.keys() == {
-        "kind",   "etag",   "pageInfo",   "nextPageToken","pollingIntervalMillis","items"
+        "kind", "etag", "pageInfo", "nextPageToken", "pollingIntervalMillis", "items"
    }
    assert ret["pageInfo"].keys() == {
-        "totalResults",   "resultsPerPage"
+        "totalResults", "resultsPerPage"
    }
    assert ret["items"][0].keys() == {
-        "kind",   "etag",   "id",   "snippet","authorDetails"
+        "kind", "etag", "id", "snippet", "authorDetails"
    }
    assert ret["items"][0]["snippet"].keys() == {
        'type', 'liveChatId', 'authorChannelId', 'publishedAt', 'hasDisplayContent', 'displayMessage'

    }
    assert ret["items"][0]["authorDetails"].keys() == {
-        'channelId', 'channelUrl', 'displayName', 'profileImageUrl', 'isVerified', 'isChatOwner', 'isChatSponsor', 'isChatModerator'
+        'channelId', 'channelUrl', 'displayName', 'profileImageUrl', 'isVerified', 'isChatOwner', 'isChatSponsor',
+        'isChatModerator'
    }
-    assert "LCC." in ret["items"][0]["id"] 
-    assert ret["items"][0]["snippet"]["type"]=="newSponsorEvent"
+    assert "LCC." in ret["items"][0]["id"]
+    assert ret["items"][0]["snippet"]["type"] == "newSponsorEvent"
+
+
+def test_newsponcer_rev(mocker):
+    '''api互換processorのテスト：メンバ新規登録'''
+    processor = CompatibleProcessor()
+
+    _json = _open_file("tests/testdata/compatible/newSponsor_rev.json")
+
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
+    data = {
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
+    }
+    ret = processor.process([data])
+
+    assert ret["kind"] == "youtube#liveChatMessageListResponse"
+    assert ret["pollingIntervalMillis"] == data["timeout"] * 1000
+    assert ret.keys() == {
+        "kind", "etag", "pageInfo", "nextPageToken", "pollingIntervalMillis", "items"
+    }
+    assert ret["pageInfo"].keys() == {
+        "totalResults", "resultsPerPage"
+    }
+    assert ret["items"][0].keys() == {
+        "kind", "etag", "id", "snippet", "authorDetails"
+    }
+    assert ret["items"][0]["snippet"].keys() == {
+        'type', 'liveChatId', 'authorChannelId', 'publishedAt', 'hasDisplayContent', 'displayMessage'
+
+    }
+    assert ret["items"][0]["authorDetails"].keys() == {
+        'channelId', 'channelUrl', 'displayName', 'profileImageUrl', 'isVerified', 'isChatOwner', 'isChatSponsor',
+        'isChatModerator'
+    }
+    assert "LCC." in ret["items"][0]["id"]
+    assert ret["items"][0]["snippet"]["type"] == "newSponsorEvent"


 def test_superchat(mocker):
@@ -93,53 +125,56 @@ def test_superchat(mocker):

    _json = _open_file("tests/testdata/compatible/superchat.json")

-    _, chatdata = parser.parse(parser.get_contents(json.loads(_json)))
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
    data = {
-        "video_id" : "",
-        "timeout" : 7,
-        "chatdata" : chatdata
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
    }
    ret = processor.process([data])

-    assert ret["kind"]== "youtube#liveChatMessageListResponse"
-    assert ret["pollingIntervalMillis"]==data["timeout"]*1000
+    assert ret["kind"] == "youtube#liveChatMessageListResponse"
+    assert ret["pollingIntervalMillis"] == data["timeout"] * 1000
    assert ret.keys() == {
-        "kind",   "etag",   "pageInfo",   "nextPageToken","pollingIntervalMillis","items"
+        "kind", "etag", "pageInfo", "nextPageToken", "pollingIntervalMillis", "items"
    }
    assert ret["pageInfo"].keys() == {
-        "totalResults",   "resultsPerPage"
+        "totalResults", "resultsPerPage"
    }
    assert ret["items"][0].keys() == {
-        "kind",   "etag",   "id",   "snippet", "authorDetails"
+        "kind", "etag", "id", "snippet", "authorDetails"
    }
    assert ret["items"][0]["snippet"].keys() == {
-        'type', 'liveChatId', 'authorChannelId', 'publishedAt', 'hasDisplayContent', 'displayMessage', 'superChatDetails'
+        'type', 'liveChatId', 'authorChannelId', 'publishedAt', 'hasDisplayContent', 'displayMessage',
+        'superChatDetails'
    }
    assert ret["items"][0]["authorDetails"].keys() == {
-        'channelId', 'channelUrl', 'displayName', 'profileImageUrl', 'isVerified', 'isChatOwner', 'isChatSponsor', 'isChatModerator'
+        'channelId', 'channelUrl', 'displayName', 'profileImageUrl', 'isVerified', 'isChatOwner', 'isChatSponsor',
+        'isChatModerator'
    }
    assert ret["items"][0]["snippet"]["superChatDetails"].keys() == {
        'amountMicros', 'currency', 'amountDisplayString', 'tier', 'backgroundColor'
    }
-    assert "LCC." in ret["items"][0]["id"] 
-    assert ret["items"][0]["snippet"]["type"]=="superChatEvent"
+    assert "LCC." in ret["items"][0]["id"]
+    assert ret["items"][0]["snippet"]["type"] == "superChatEvent"
+

 def test_unregistered_currency(mocker):
    processor = CompatibleProcessor()

    _json = _open_file("tests/testdata/unregistered_currency.json")

-    _, chatdata = parser.parse(parser.get_contents(json.loads(_json)))
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])

    data = {
-        "video_id" : "",
-        "timeout" : 7,
-        "chatdata" : chatdata
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
    }
    ret = processor.process([data])
    assert ret["items"][0]["snippet"]["superChatDetails"]["currency"] == "[UNREGISTERD]"


 def _open_file(path):
-    with open(path,mode ='r',encoding = 'utf-8') as f:
+    with open(path, mode='r', encoding='utf-8') as f:
        return f.read()
--- a/tests/test_default_processor.py
+++ b/tests/test_default_processor.py
@@ -0,0 +1,227 @@
+import json
+from datetime import datetime
+from pytchat.parser.live import Parser
+from pytchat.processors.default.processor import DefaultProcessor
+
+
+TEST_TIMETSTAMP = 1570678496000000
+
+
+def get_local_datetime(timestamp):
+    dt = datetime.fromtimestamp(timestamp / 1000000)
+    return dt.strftime('%Y-%m-%d %H:%M:%S')
+
+
+def test_textmessage(mocker):
+    '''text message'''
+    processor = DefaultProcessor()
+    parser = Parser(is_replay=False)
+    _json = _open_file("tests/testdata/default/textmessage.json")
+
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
+    data = {
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
+    }
+
+    ret = processor.process([data]).items[0]
+    assert ret.id == "dummy_id"
+    assert ret.message == "dummy_message"
+    assert ret.timestamp == 1570678496000
+    assert ret.datetime == get_local_datetime(TEST_TIMETSTAMP)
+    assert ret.author.name == "author_name"
+    assert ret.author.channelId == "author_channel_id"
+    assert ret.author.channelUrl == "http://www.youtube.com/channel/author_channel_id"
+    assert ret.author.imageUrl == "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg"
+    assert ret.author.badgeUrl == ""
+    assert ret.author.isVerified is False
+    assert ret.author.isChatOwner is False
+    assert ret.author.isChatSponsor is False
+    assert ret.author.isChatModerator is False
+
+
+def test_textmessage_replay_member(mocker):
+    '''text message replay member'''
+    processor = DefaultProcessor()
+    parser = Parser(is_replay=True)
+    _json = _open_file("tests/testdata/default/replay_member_text.json")
+
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
+    data = {
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
+    }
+    
+    ret = processor.process([data]).items[0]
+    assert ret.type == "textMessage"
+    assert ret.id == "dummy_id"
+    assert ret.message == "dummy_message"
+    assert ret.messageEx == ["dummy_message"]
+    assert ret.timestamp == 1570678496000
+    assert ret.datetime == get_local_datetime(TEST_TIMETSTAMP)
+    assert ret.elapsedTime == "1:23:45"
+    assert ret.author.name == "author_name"
+    assert ret.author.channelId == "author_channel_id"
+    assert ret.author.channelUrl == "http://www.youtube.com/channel/author_channel_id"
+    assert ret.author.imageUrl == "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg"
+    assert ret.author.badgeUrl == "https://yt3.ggpht.com/X=s16-c-k"
+    assert ret.author.isVerified is False
+    assert ret.author.isChatOwner is False
+    assert ret.author.isChatSponsor is True
+    assert ret.author.isChatModerator is False
+
+
+def test_superchat(mocker):
+    '''superchat'''
+    processor = DefaultProcessor()
+    parser = Parser(is_replay=False)
+    _json = _open_file("tests/testdata/default/superchat.json")
+
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
+    data = {
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
+    }
+    
+    ret = processor.process([data]).items[0]
+    assert ret.type == "superChat"
+    assert ret.id == "dummy_id"
+    assert ret.message == "dummy_message"
+    assert ret.messageEx == ["dummy_message"]
+    assert ret.timestamp == 1570678496000
+    assert ret.datetime == get_local_datetime(TEST_TIMETSTAMP)
+    assert ret.elapsedTime == ""
+    assert ret.amountValue == 800
+    assert ret.amountString == "￥800"
+    assert ret.currency == "JPY"
+    assert ret.bgColor == 4280150454
+    assert ret.author.name == "author_name"
+    assert ret.author.channelId == "author_channel_id"
+    assert ret.author.channelUrl == "http://www.youtube.com/channel/author_channel_id"
+    assert ret.author.imageUrl == "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg"
+    assert ret.author.badgeUrl == ""
+    assert ret.author.isVerified is False
+    assert ret.author.isChatOwner is False
+    assert ret.author.isChatSponsor is False
+    assert ret.author.isChatModerator is False
+    assert ret.colors.headerBackgroundColor == 4278239141
+    assert ret.colors.headerTextColor == 4278190080
+    assert ret.colors.bodyBackgroundColor == 4280150454
+    assert ret.colors.bodyTextColor == 4278190080
+    assert ret.colors.authorNameTextColor == 2315255808
+    assert ret.colors.timestampColor == 2147483648
+
+
+def test_supersticker(mocker):
+    '''supersticker'''
+    processor = DefaultProcessor()
+    parser = Parser(is_replay=False)
+    _json = _open_file("tests/testdata/default/supersticker.json")
+
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
+    data = {
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
+    }
+   
+    ret = processor.process([data]).items[0]
+    assert ret.type == "superSticker"
+    assert ret.id == "dummy_id"
+    assert ret.message == ""
+    assert ret.messageEx == []
+    assert ret.timestamp == 1570678496000
+    assert ret.datetime == get_local_datetime(TEST_TIMETSTAMP)
+    assert ret.elapsedTime == ""
+    assert ret.amountValue == 200
+    assert ret.amountString == "￥200"
+    assert ret.currency == "JPY"
+    assert ret.bgColor == 4278237396
+    assert ret.sticker == "https://lh3.googleusercontent.com/param_s=s72-rp"
+    assert ret.author.name == "author_name"
+    assert ret.author.channelId == "author_channel_id"
+    assert ret.author.channelUrl == "http://www.youtube.com/channel/author_channel_id"
+    assert ret.author.imageUrl == "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg"
+    assert ret.author.badgeUrl == ""
+    assert ret.author.isVerified is False
+    assert ret.author.isChatOwner is False
+    assert ret.author.isChatSponsor is False
+    assert ret.author.isChatModerator is False
+    assert ret.colors.backgroundColor == 4278237396
+    assert ret.colors.moneyChipBackgroundColor == 4278248959
+    assert ret.colors.moneyChipTextColor == 4278190080
+    assert ret.colors.authorNameTextColor == 3003121664
+
+
+def test_sponsor(mocker):
+    '''sponsor(membership)'''
+    processor = DefaultProcessor()
+    parser = Parser(is_replay=False)
+    _json = _open_file("tests/testdata/default/newSponsor_current.json")
+
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
+    data = {
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
+    }
+    
+    ret = processor.process([data]).items[0]
+    assert ret.type == "newSponsor"
+    assert ret.id == "dummy_id"
+    assert ret.message == "新規メンバー"
+    assert ret.messageEx == ["新規メンバー"]
+    assert ret.timestamp == 1570678496000
+    assert ret.datetime == get_local_datetime(TEST_TIMETSTAMP)
+    assert ret.elapsedTime == ""
+    assert ret.bgColor == 0
+    assert ret.author.name == "author_name"
+    assert ret.author.channelId == "author_channel_id"
+    assert ret.author.channelUrl == "http://www.youtube.com/channel/author_channel_id"
+    assert ret.author.imageUrl == "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg"
+    assert ret.author.badgeUrl == "https://yt3.ggpht.com/X=s32-c-k"
+    assert ret.author.isVerified is False
+    assert ret.author.isChatOwner is False
+    assert ret.author.isChatSponsor is True
+    assert ret.author.isChatModerator is False
+
+
+def test_sponsor_legacy(mocker):
+    '''lagacy sponsor(membership)'''
+    processor = DefaultProcessor()
+    parser = Parser(is_replay=False)
+    _json = _open_file("tests/testdata/default/newSponsor_lagacy.json")
+
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
+    data = {
+        "video_id": "",
+        "timeout": 7,
+        "chatdata": chatdata
+    }
+    
+    ret = processor.process([data]).items[0]
+    assert ret.type == "newSponsor"
+    assert ret.id == "dummy_id"
+    assert ret.message == "新規メンバー / ようこそ、author_name！"
+    assert ret.messageEx == ["新規メンバー / ようこそ、author_name！"]
+    assert ret.timestamp == 1570678496000
+    assert ret.datetime == get_local_datetime(TEST_TIMETSTAMP)
+    assert ret.elapsedTime == ""
+    assert ret.bgColor == 0
+    assert ret.author.name == "author_name"
+    assert ret.author.channelId == "author_channel_id"
+    assert ret.author.channelUrl == "http://www.youtube.com/channel/author_channel_id"
+    assert ret.author.imageUrl == "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg"
+    assert ret.author.badgeUrl == ""
+    assert ret.author.isVerified is False
+    assert ret.author.isChatOwner is False
+    assert ret.author.isChatSponsor is True
+    assert ret.author.isChatModerator is False
+
+
+def _open_file(path):
+    with open(path, mode='r', encoding='utf-8') as f:
+        return f.read()
--- a/tests/test_extract_video_id.py
+++ b/tests/test_extract_video_id.py
@@ -0,0 +1,55 @@
+from pytchat.util import extract_video_id
+from pytchat.exceptions import InvalidVideoIdException
+
+VALID_TEST_PATTERNS = (
+    ("ABC_EFG_IJK", "ABC_EFG_IJK"),
+    ("vid_test_be", "vid_test_be"),
+    ("https://www.youtube.com/watch?v=123_456_789", "123_456_789"),
+    ("https://www.youtube.com/watch?v=123_456_789&t=123s", "123_456_789"),
+    ("www.youtube.com/watch?v=123_456_789", "123_456_789"),
+    ("watch?v=123_456_789", "123_456_789"),
+    ("youtube.com/watch?v=123_456_789", "123_456_789"),
+    ("http://youtu.be/ABC_EFG_IJK", "ABC_EFG_IJK"),
+    ("youtu.be/ABC_EFG_IJK", "ABC_EFG_IJK"),
+    ("https://www.youtube.com/watch?v=ABC_EFG_IJK&list=XYZ_ABC_12345&start_radio=1&t=1", "ABC_EFG_IJK"),
+    ("https://www.youtube.com/embed/ABC_EFG_IJK", "ABC_EFG_IJK"),
+    ("www.youtube.com/embed/ABC_EFG_IJK", "ABC_EFG_IJK"),
+    ("youtube.com/embed/ABC_EFG_IJK", "ABC_EFG_IJK")
+)
+
+INVALID_TEST_PATTERNS = (
+    ("", ""),
+    ("0123456789", "0123456789"),  # less than 11 letters id
+    ("more_than_11_letter_string", "more_than_11_letter_string"),
+    ("https://www.youtube.com/watch?v=more_than_11_letter_string", "more_than_11_letter_string"),
+    ("https://www.youtube.com/channel/123_456_789", "123_456_789"),
+)
+
+TYPEERROR_TEST_PATTERNS = (
+    (100, 100),  # not string
+    (["123_456_789"], "123_456_789"),  # not string
+)
+
+
+def test_extract_valid_pattern():
+    for pattern in VALID_TEST_PATTERNS:
+        ret = extract_video_id(pattern[0])
+        assert ret == pattern[1]
+
+
+def test_extract_invalid_pattern():
+    for pattern in INVALID_TEST_PATTERNS:
+        try:
+            extract_video_id(pattern[0])
+            assert False
+        except InvalidVideoIdException:
+            assert True
+
+
+def test_extract_typeerror_pattern():
+    for pattern in TYPEERROR_TEST_PATTERNS:
+        try:
+            extract_video_id(pattern[0])
+            assert False
+        except TypeError:
+            assert True
--- a/tests/test_jsonfile_archiver.py
+++ b/tests/test_jsonfile_archiver.py
@@ -0,0 +1,48 @@
+import json
+from pytchat.processors.jsonfile_archiver import JsonfileArchiver
+from unittest.mock import patch, mock_open
+from tests.testdata.jsonfile_archiver.chat_component import chat_component
+
+def _open_file(path):
+    with open(path,mode ='r',encoding = 'utf-8') as f:
+        return f.read()
+
+def test_checkpath(mocker):
+    processor = JsonfileArchiver("path")
+    mocker.patch('os.path.exists').side_effect = exists_file
+    '''Test no duplicate file.'''
+    assert processor._checkpath("z:/other.txt") == "z:/other.txt"
+    
+    '''Test duplicate filename. 
+    The case the name first renamed ('test.txt -> test(0).txt')
+    is also duplicated.
+    '''
+    assert processor._checkpath("z:/test.txt") == "z:/test(1).txt"
+    
+    '''Test no extention file (duplicate).'''
+    assert processor._checkpath("z:/test") == "z:/test(0)"
+
+
+def test_read_write():
+    '''Test read and write chatdata'''
+    mock = mock_open(read_data = "")
+    with patch('builtins.open',mock):
+        processor = JsonfileArchiver("path")
+        save_path = processor.process([chat_component])
+    fh = mock()
+    actuals = [args[0] for (args, kwargs) in fh.writelines.call_args_list]
+    '''write format is json dump string  with 0x0A'''
+    to_be_written = [json.dumps(action, ensure_ascii=False)+'\n' 
+        for action in chat_component["chatdata"]]
+    for i in range(len(actuals)):
+        assert actuals[i] == to_be_written[i]
+    assert save_path == {'save_path': 'path', 'total_lines': 7}    
+
+
+def exists_file(path):
+    if path == "z:/test.txt":
+        return True
+    if path == "z:/test(0).txt":
+        return True
+    if path == "z:/test":
+        return True
--- a/tests/test_livechat.py
+++ b/tests/test_livechat.py
@@ -1,53 +0,0 @@
-import pytest
-from pytchat.parser.live import Parser
-
-import json
-import asyncio,aiohttp
-
-from aioresponses import aioresponses
-from pytchat.core_async.livechat import LiveChatAsync
-from pytchat.exceptions import (
-    NoLivechatRendererException,NoYtinitialdataException,
-    ResponseContextError,NoContentsException)
-
-
-from pytchat.core_multithread.livechat import LiveChat
-import unittest
-from unittest import TestCase
-
-def _open_file(path):
-    with open(path,mode ='r',encoding = 'utf-8') as f:
-        return f.read()
-
-@aioresponses()
-def test_Async(*mock):
-    vid=''
-    _text = _open_file('tests/testdata/paramgen_firstread.json')
-    _text = json.loads(_text)
-    mock[0].get(f"https://www.youtube.com/live_chat?v={vid}&is_popout=1", status=200, body=_text)
-    try:
-        chat = LiveChatAsync(video_id='')
-        assert chat.is_alive()
-        chat.terminate()
-        assert not chat.is_alive()
-    except ResponseContextError:
-        assert not chat.is_alive()
-
-def test_MultiThread(mocker):
-    _text = _open_file('tests/testdata/paramgen_firstread.json')
-    _text = json.loads(_text)
-    responseMock = mocker.Mock()
-    responseMock.status_code = 200
-    responseMock.text = _text
-    mocker.patch('requests.Session.get').return_value = responseMock
-    try:
-        chat = LiveChatAsync(video_id='')
-        assert chat.is_alive()
-        chat.terminate()
-        assert not chat.is_alive()
-    except ResponseContextError:
-        chat.terminate()
-        assert not chat.is_alive()
-
-
-
--- a/tests/test_livechat_2.py
+++ b/tests/test_livechat_2.py
@@ -1,125 +0,0 @@
-import asyncio, aiohttp
-import json
-import pytest
-import re
-import requests
-import sys
-import time
-from aioresponses import aioresponses
-from concurrent.futures import CancelledError
-from unittest import TestCase
-from pytchat.core_multithread.livechat import LiveChat
-from pytchat.core_async.livechat import LiveChatAsync
-from pytchat.exceptions import (
-      NoLivechatRendererException,NoYtinitialdataException,
-      ResponseContextError,NoContentsException)
-from pytchat.parser.live import Parser
-from pytchat.processors.dummy_processor import DummyProcessor
-
-def _open_file(path):
-    with open(path,mode ='r',encoding = 'utf-8') as f:
-        return f.read()
-
-@aioresponses()
-def test_async_live_stream(*mock):
-
-    async def test_loop(*mock):
-        pattern = re.compile(r'^https://www.youtube.com/live_chat/get_live_chat\?continuation=.*$')
-        _text = _open_file('tests/testdata/test_stream.json')
-        mock[0].get(pattern, status=200, body=_text)
-        chat = LiveChatAsync(video_id='', processor = DummyProcessor())
-        chats = await chat.get()
-        rawdata = chats[0]["chatdata"]
-        #assert fetching livachat data
-        assert list(rawdata[0]["addChatItemAction"]["item"].keys())[0] == "liveChatTextMessageRenderer"
-        assert list(rawdata[1]["addChatItemAction"]["item"].keys())[0] == "liveChatTextMessageRenderer"
-        assert list(rawdata[2]["addChatItemAction"]["item"].keys())[0] == "liveChatPlaceholderItemRenderer"
-        assert list(rawdata[3]["addLiveChatTickerItemAction"]["item"].keys())[0] == "liveChatTickerPaidMessageItemRenderer"
-        assert list(rawdata[4]["addChatItemAction"]["item"].keys())[0] == "liveChatPaidMessageRenderer"
-        assert list(rawdata[5]["addChatItemAction"]["item"].keys())[0] == "liveChatPaidStickerRenderer"
-        assert list(rawdata[6]["addLiveChatTickerItemAction"]["item"].keys())[0] == "liveChatTickerSponsorItemRenderer"                                
-
-    loop = asyncio.get_event_loop()
-    try:
-        loop.run_until_complete(test_loop(*mock))
-    except CancelledError:
-        assert True
-
-@aioresponses()        
-def test_async_replay_stream(*mock):
-
-    async def test_loop(*mock):
-        pattern_live = re.compile(r'^https://www.youtube.com/live_chat/get_live_chat\?continuation=.*$')
-        pattern_replay =  re.compile(r'^https://www.youtube.com/live_chat_replay/get_live_chat_replay\?continuation=.*$')
-        #empty livechat -> switch to fetch replaychat
-        _text_live = _open_file('tests/testdata/finished_live.json')
-        _text_replay = _open_file('tests/testdata/chatreplay.json')
-        mock[0].get(pattern_live, status=200, body=_text_live)
-        mock[0].get(pattern_replay, status=200, body=_text_replay)
-
-        chat = LiveChatAsync(video_id='', processor = DummyProcessor())
-        chats = await chat.get()
-        rawdata = chats[0]["chatdata"]
-        #assert fetching replaychat data
-        assert list(rawdata[0]["addChatItemAction"]["item"].keys())[0] == "liveChatTextMessageRenderer"
-        assert list(rawdata[14]["addChatItemAction"]["item"].keys())[0] == "liveChatPaidMessageRenderer"
-
-    loop = asyncio.get_event_loop()
-    try:
-        loop.run_until_complete(test_loop(*mock))
-    except CancelledError:
-        assert True
-
-@aioresponses()
-def test_async_force_replay(*mock):
-
-    async def test_loop(*mock):
-        pattern_live = re.compile(r'^https://www.youtube.com/live_chat/get_live_chat\?continuation=.*$')
-        pattern_replay =  re.compile(r'^https://www.youtube.com/live_chat_replay/get_live_chat_replay\?continuation=.*$')
-        #valid live data, but force_replay = True
-        _text_live = _open_file('tests/testdata/test_stream.json')
-        #valid replay data
-        _text_replay = _open_file('tests/testdata/chatreplay.json')
-        
-        mock[0].get(pattern_live, status=200, body=_text_live)
-        mock[0].get(pattern_replay, status=200, body=_text_replay)
-        #force replay
-        chat = LiveChatAsync(video_id='', processor = DummyProcessor(), force_replay = True)
-        chats = await chat.get()
-        rawdata = chats[0]["chatdata"]
-        # assert fetching replaychat data
-        assert list(rawdata[14]["addChatItemAction"]["item"].keys())[0] == "liveChatPaidMessageRenderer"
-        # assert not mix livechat data
-        assert list(rawdata[2]["addChatItemAction"]["item"].keys())[0] != "liveChatPlaceholderItemRenderer"
-    
-    loop = asyncio.get_event_loop()
-    try:
-        loop.run_until_complete(test_loop(*mock))
-    except CancelledError:
-        assert True
-
-def test_multithread_live_stream(mocker):
-
-    _text = _open_file('tests/testdata/test_stream.json')
-    responseMock = mocker.Mock()
-    responseMock.status_code = 200
-    responseMock.text = _text
-    mocker.patch('requests.Session.get').return_value.__enter__.return_value = responseMock
-
-    chat = LiveChat(video_id='test_id', processor = DummyProcessor())
-    chats = chat.get()
-    rawdata = chats[0]["chatdata"]
-    #assert fetching livachat data
-    assert list(rawdata[0]["addChatItemAction"]["item"].keys())[0] == "liveChatTextMessageRenderer"
-    assert list(rawdata[1]["addChatItemAction"]["item"].keys())[0] == "liveChatTextMessageRenderer"
-    assert list(rawdata[2]["addChatItemAction"]["item"].keys())[0] == "liveChatPlaceholderItemRenderer"
-    assert list(rawdata[3]["addLiveChatTickerItemAction"]["item"].keys())[0] == "liveChatTickerPaidMessageItemRenderer"
-    assert list(rawdata[4]["addChatItemAction"]["item"].keys())[0] == "liveChatPaidMessageRenderer"
-    assert list(rawdata[5]["addChatItemAction"]["item"].keys())[0] == "liveChatPaidStickerRenderer"
-    assert list(rawdata[6]["addLiveChatTickerItemAction"]["item"].keys())[0] == "liveChatTickerSponsorItemRenderer"
-    chat.terminate()
-
-    
-
-
-
--- a/tests/test_liveparam.py
+++ b/tests/test_liveparam.py
@@ -1,9 +0,0 @@
-import pytest
-from pytchat.paramgen import liveparam
-
-def test_liveparam_0(mocker):
-    _ts1= 1546268400
-    param = liveparam._build("01234567890",
-    *([_ts1*1000000 for i in range(5)]), topchat_only=False)
-    test_param="0ofMyAPiARp8Q2c4S0RRb0xNREV5TXpRMU5qYzRPVEFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5TURFeU16UTFOamM0T1RBbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCiAuNbVqsrfAjAAOABAAkorCAEQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgLjW1arK3wJYA1CAuNbVqsrfAliAuNbVqsrfAmgBggEECAEQAIgBAKABgLjW1arK3wI%3D"
-    assert test_param == param
--- a/tests/test_parser.py
+++ b/tests/test_parser.py
@@ -1,44 +1,34 @@
-import pytest
 from pytchat.parser.live import Parser
 import json
-import asyncio,aiohttp
-from aioresponses import aioresponses
-from pytchat.exceptions import (
-    NoLivechatRendererException,NoYtinitialdataException,
-    ResponseContextError, NoContentsException)
+from pytchat.exceptions import NoContents
+
+
+parser = Parser(is_replay=False)


 def _open_file(path):
-    with open(path,mode ='r',encoding = 'utf-8') as f:
+    with open(path, mode='r', encoding='utf-8') as f:
        return f.read()
-parser = Parser(is_replay = False)

-@aioresponses()
+
 def test_finishedlive(*mock):
-    '''配信が終了した動画を正しく処理できるか'''
-
    _text = _open_file('tests/testdata/finished_live.json')
    _text = json.loads(_text)

-    try:    
-        parser.parse(parser.get_contents(_text))
+    try:
+        parser.parse(parser.get_contents(_text)[0])
        assert False
-    except NoContentsException:
+    except NoContents:
        assert True

-@aioresponses()
-def test_parsejson(*mock):
-    '''jsonを正常にパースできるか'''

+def test_parsejson(*mock):
    _text = _open_file('tests/testdata/paramgen_firstread.json')
    _text = json.loads(_text)

-    try:    
-        parser.parse(parser.get_contents(_text))
-        jsn = _text
-        timeout = jsn["response"]["continuationContents"]["liveChatContinuation"]["continuations"][0]["timedContinuationData"]["timeoutMs"]
-        continuation = jsn["response"]["continuationContents"]["liveChatContinuation"]["continuations"][0]["timedContinuationData"]["continuation"]
-        assert 5035 == timeout
-        assert "0ofMyAPiARp8Q2c4S0RRb0xhelJMZDBsWFQwdERkalFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5YXpSTGQwbFhUMHREZGpRbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCiPz5-Os-PkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgJqXjrPj5AJYA1CRwciOs-PkAli3pNq1k-PkAmgBggEECAEQAIgBAKABjbfnjrPj5AI%3D" == continuation
-    except:
-        assert False
+    try:
+        s, _ = parser.parse(parser.get_contents(_text)[0])
+        assert s['timeoutMs'] == 5035
+        assert s['continuation'] == "0ofMyAPiARp8Q2c4S0RRb0xhelJMZDBsWFQwdERkalFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5YXpSTGQwbFhUMHREZGpRbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCiPz5-Os-PkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgJqXjrPj5AJYA1CRwciOs-PkAli3pNq1k-PkAmgBggEECAEQAIgBAKABjbfnjrPj5AI%3D"
+    except Exception:
+        assert False
--- a/tests/test_speed_calculator.py
+++ b/tests/test_speed_calculator.py
@@ -1,15 +1,9 @@
 import json
-import pytest
-import asyncio,aiohttp
 from pytchat.parser.live import Parser
-from pytchat.processors.compatible.processor import CompatibleProcessor
-from pytchat.exceptions import (
-    NoLivechatRendererException,NoYtinitialdataException,
-    ResponseContextError, NoContentsException)
+from pytchat.processors.speed.calculator import SpeedCalculator

-from pytchat.processors.speed_calculator import SpeedCalculator
+parser = Parser(is_replay=False)

-parser = Parser(is_replay =False)

 def test_speed_1(mocker):
    '''test speed calculation with normal json.
@@ -21,15 +15,16 @@ def test_speed_1(mocker):

    _json = _open_file("tests/testdata/speed/speedtest_normal.json")

-    _, chatdata = parser.parse(parser.get_contents(json.loads(_json)))
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
    data = {
-        "video_id" : "",
-        "timeout" : 10,
-        "chatdata" : chatdata
+        "video_id": "",
+        "timeout": 10,
+        "chatdata": chatdata
    }
    ret = processor.process([data])
    assert 30 == ret

+
 def test_speed_2(mocker):
    '''test speed calculation with no valid chat data.
    '''
@@ -37,15 +32,16 @@ def test_speed_2(mocker):

    _json = _open_file("tests/testdata/speed/speedtest_undefined.json")

-    _, chatdata = parser.parse(parser.get_contents(json.loads(_json)))
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
    data = {
-        "video_id" : "",
-        "timeout" : 10,
-        "chatdata" : chatdata
+        "video_id": "",
+        "timeout": 10,
+        "chatdata": chatdata
    }
    ret = processor.process([data])
-    assert 0 == ret
-    
+    assert ret == 0
+
+
 def test_speed_3(mocker):
    '''test speed calculation with empty data.
    '''
@@ -53,16 +49,16 @@ def test_speed_3(mocker):

    _json = _open_file("tests/testdata/speed/speedtest_empty.json")

-    _, chatdata = parser.parse(parser.get_contents(json.loads(_json)))
+    _, chatdata = parser.parse(parser.get_contents(json.loads(_json))[0])
    data = {
-        "video_id" : "",
-        "timeout" : 10,
-        "chatdata" : chatdata
+        "video_id": "",
+        "timeout": 10,
+        "chatdata": chatdata
    }
    ret = processor.process([data])
-    assert 0 == ret
-    
+    assert ret == 0
+

 def _open_file(path):
-    with open(path,mode ='r',encoding = 'utf-8') as f:
+    with open(path, mode='r', encoding='utf-8') as f:
        return f.read()
--- a/tests/testdata/calculator/replay_end.json
+++ b/tests/testdata/calculator/replay_end.json
@@ -0,0 +1,18 @@
+{
+ "response": {
+  "responseContext": {
+   "webResponseContextExtensionData": ""
+  },
+  "continuationContents": {
+   "liveChatContinuation": {
+    "continuations": [
+     {
+      "playerSeekContinuationData": {
+       "continuation": "___reload_continuation___"
+      }
+     }
+    ]
+   }
+  }
+ }
+}
--- a/tests/testdata/calculator/superchat_0.json
+++ b/tests/testdata/calculator/superchat_0.json
--- a/tests/testdata/calculator/text_only.json
+++ b/tests/testdata/calculator/text_only.json
@@ -0,0 +1,87 @@
+{
+  "responseContext": {
+    "webResponseContextExtensionData": ""
+  },
+  "continuationContents": {
+    "liveChatContinuation": {
+      "continuations": [
+        {
+          "invalidationContinuationData": {
+            "invalidationId": {
+              "objectSource": 1000,
+              "objectId": "___objectId___",
+              "topic": "chat~00000000000~0000000",
+              "subscribeToGcmTopics": true,
+              "protoCreationTimestampMs": "1577804400000"
+            },
+            "timeoutMs": 10000,
+            "continuation": "___continuation___"
+          }
+        }
+      ],
+      "actions": [
+        {
+          "replayChatItemAction": {
+            "actions": [
+              {
+                "addChatItemAction": {
+                  "item": {
+                    "liveChatTextMessageRenderer": {
+                      "message": {
+                        "runs": [
+                          {
+                            "text": "dummy_message"
+                          }
+                        ]
+                      },
+                      "authorName": {
+                        "simpleText": "author_name"
+                      },
+                      "authorPhoto": {
+                        "thumbnails": [
+                          {
+                            "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                            "width": 32,
+                            "height": 32
+                          },
+                          {
+                            "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                            "width": 64,
+                            "height": 64
+                          }
+                        ]
+                      },
+                      "contextMenuEndpoint": {
+                        "commandMetadata": {
+                          "webCommandMetadata": {
+                            "ignoreNavigation": true
+                          }
+                        },
+                        "liveChatItemContextMenuEndpoint": {
+                          "params": "___params___"
+                        }
+                      },
+                      "id": "dummy_id",
+                      "timestampUsec": 0,
+                      "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
+                      "contextMenuAccessibility": {
+                        "accessibilityData": {
+                          "label": "コメントの操作"
+                        }
+                      },
+                      "timestampText": {
+                        "simpleText": "0:00"
+                      }
+                    }
+                  },
+                  "clientId": "dummy_client_id"
+                }
+              }
+            ],
+            "videoOffsetTimeMsec": "10000"
+          }
+        }
+      ]
+    }
+  }
+}
--- a/tests/testdata/chatreplay.json
+++ b/tests/testdata/chatreplay.json
--- a/tests/testdata/compatible/newSponsor.json
+++ b/tests/testdata/compatible/newSponsor.json
--- a/tests/testdata/compatible/newSponsor_rev.json
+++ b/tests/testdata/compatible/newSponsor_rev.json
--- a/tests/testdata/compatible/superchat.json
+++ b/tests/testdata/compatible/superchat.json
@@ -1,282 +1,281 @@
 {
-    "xsrf_token": "QUFFLUhqbWVqWVRTUjhBcGRkNWR5Q2F3VWhxcTd0RkF1UXxBQ3Jtc0trMThFVGVVNTFnWmZucnkwNlJJMEZ2bndUS1I3b2dpLUtTNE92dEgwX3Y0MkNZU2NXdGY1QTMtX09BUGphYUpDQlc1dFhiTm9jLS1sQXVCNHpsdllqcm1id0t1RFBCM3A1b2o3OGt0Yjd6TE5wcmxBbjNyQktjc1lWZ3hjM1RuYk83YkQ0VVN3MGUybjAwSE90SS1YNkxvMUV5YVE=",
-    "timing": {
-        "info": {
-            "st": 148
-        }
+  "xsrf_token": "QUFFLUhqbWVqWVRTUjhBcGRkNWR5Q2F3VWhxcTd0RkF1UXxBQ3Jtc0trMThFVGVVNTFnWmZucnkwNlJJMEZ2bndUS1I3b2dpLUtTNE92dEgwX3Y0MkNZU2NXdGY1QTMtX09BUGphYUpDQlc1dFhiTm9jLS1sQXVCNHpsdllqcm1id0t1RFBCM3A1b2o3OGt0Yjd6TE5wcmxBbjNyQktjc1lWZ3hjM1RuYk83YkQ0VVN3MGUybjAwSE90SS1YNkxvMUV5YVE=",
+  "timing": {
+    "info": {
+      "st": 148
+    }
+  },
+  "endpoint": {
+    "commandMetadata": {
+      "webCommandMetadata": {
+        "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCja2bHMpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DXxuTMpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABxM3xzKT75AI%253D"
+      }
    },
-    "endpoint": {
-        "commandMetadata": {
-            "webCommandMetadata": {
-                "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCja2bHMpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DXxuTMpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABxM3xzKT75AI%253D"
-            }
-        },
-        "urlEndpoint": {
-            "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCja2bHMpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DXxuTMpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABxM3xzKT75AI%253D"
+    "urlEndpoint": {
+      "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCja2bHMpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DXxuTMpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABxM3xzKT75AI%253D"
+    }
+  },
+  "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCja2bHMpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DXxuTMpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABxM3xzKT75AI%253D",
+  "csn": "n2STXd2iKZr2gAOt9qvgCg",
+
+  "responseContext": {
+    "serviceTrackingParams": [
+      {
+        "service": "CSI",
+        "params": [
+          {
+            "key": "GetLiveChat_rid",
+            "value": "0x9290108c05344647"
+          },
+          {
+            "key": "c",
+            "value": "WEB"
+          },
+          {
+            "key": "cver",
+            "value": "2.20191001.04.00"
+          },
+          {
+            "key": "yt_li",
+            "value": "0"
+          }
+        ]
+      },
+      {
+        "service": "GFEEDBACK",
+        "params": [
+          {
+            "key": "e",
+            "value": "23744176,23788875,23793834,23794620,23804281,23806159,23816483,23819244,23820768,23826780,23827354,23830392,23832125,23835020,23836965,23837741,23837772,23837993,23838235,23839362,23840155,23840217,23841118,23841454,23842630,23842662,23842883,23842986,23843289,23843534,23843767,23845644,9449243,9471239,9474360"
+          },
+          {
+            "key": "logged_in",
+            "value": "0"
+          }
+        ]
+      },
+      {
+        "service": "GUIDED_HELP",
+        "params": [
+          {
+            "key": "logged_in",
+            "value": "0"
+          }
+        ]
+      },
+      {
+        "service": "ECATCHER",
+        "params": [
+          {
+            "key": "client.name",
+            "value": "WEB"
+          },
+          {
+            "key": "client.version",
+            "value": "2.20191001"
+          },
+          {
+            "key": "innertube.build.changelist",
+            "value": "272006966"
+          },
+          {
+            "key": "innertube.build.experiments.source_version",
+            "value": "272166268"
+          },
+          {
+            "key": "innertube.build.label",
+            "value": "youtube.ytfe.innertube_20190930_5_RC0"
+          },
+          {
+            "key": "innertube.build.timestamp",
+            "value": "1569863426"
+          },
+          {
+            "key": "innertube.build.variants.checksum",
+            "value": "1a800c1a2396906f1cbb7f670d43b6f5"
+          },
+          {
+            "key": "innertube.run.job",
+            "value": "ytfe-innertube-replica-only.ytfe"
+          }
+        ]
+      }
+    ],
+    "webResponseContextExtensionData": {
+      "ytConfigData": {
+        "csn": "n2STXd2iKZr2gAOt9qvgCg",
+        "visitorData": "CgtPQm1xTmtvNm1Tcyifyc3sBQ%3D%3D"
+      }
+    }
+  },
+  "continuationContents": {
+    "liveChatContinuation": {
+      "continuations": [
+        {
+          "timedContinuationData": {
+            "timeoutMs": 8860,
+            "continuation": "0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCid_ejQpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DF-ovRpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABtNic0aT75AI%3D"
+          }
        }
-    },
-    "url": "\/live_chat\/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCja2bHMpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DXxuTMpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABxM3xzKT75AI%253D",
-    "csn": "n2STXd2iKZr2gAOt9qvgCg",
-    "response": {
-        "responseContext": {
-            "serviceTrackingParams": [
-                {
-                    "service": "CSI",
-                    "params": [
-                        {
-                            "key": "GetLiveChat_rid",
-                            "value": "0x9290108c05344647"
-                        },
-                        {
-                            "key": "c",
-                            "value": "WEB"
-                        },
-                        {
-                            "key": "cver",
-                            "value": "2.20191001.04.00"
-                        },
-                        {
-                            "key": "yt_li",
-                            "value": "0"
-                        }
-                    ]
+      ],
+      "actions": [
+        {
+          "addChatItemAction": {
+            "item": {
+              "liveChatPaidMessageRenderer": {
+                "id": "ChwKGkNOblpoTXFrLS1RQ0ZRSU9ZQW9kclhrRXNn",
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+}
--- a/tests/testdata/compatible/supersticker.json
+++ b/tests/testdata/compatible/supersticker.json
@@ -1,197 +1,195 @@
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-                            "continuation": "0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCid_ejQpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DF-ovRpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABtNic0aT75AI%3D"
-                        }
-                    }
-                ],
-                "actions": [
-                    {
-                        "addChatItemAction": {
-                            "item": {
-                                "liveChatPaidStickerRenderer": {
-                                    "id": "ChwKGkNQX2Qzb2pUcU9VQ0ZRdnVXQW9kaTNJS3NB",
-                                    "contextMenuEndpoint": {
-                                        "commandMetadata": {
-                                            "webCommandMetadata": {
-                                                "ignoreNavigation": true
-                                            }
-                                        },
-                                        "liveChatItemContextMenuEndpoint": {
-                                            "params": "Q2g0S0hBb2FRMUJmWkROdmFsUnhUMVZEUmxGMmRWZEJiMlJwTTBsTGMwRVFBQm80Q2cwS0N6VlVUSE42U0hNd2QxYzBLaWNLR0ZWRFdGSnNTVXN6UTNkZlZFcEpVVU0xYTFOS1NsRk5aeElMTlZSTWMzcEljekIzVnpRZ0FpZ0JNaG9LR0ZWRFRHOXJPVWQ0WVRGYU5rWTVWV3d5WVV0MlRFWkdadyUzRCUzRA=="
-                                        }
-                                    },
-                                    "contextMenuAccessibility": {
-                                        "accessibilityData": {
-                                            "label": "コメントの操作"
-                                        }
-                                    },
-                                    "timestampUsec": "1571499325098699",
-                                    "authorPhoto": {
-                                        "thumbnails": [
-                                            {
-                                                "url": "https: //yt3.ggpht.com/-xRQVNtDSO3w/AAAAAAAAAAI/AAAAAAAAAAA/Is9D9D7wwAE/s32-c-k-no-mo-rj-c0xffffff/photo.jpg",
-                                                "width": 32,
-                                                "height": 32
-                                            },
-                                            {
-                                                "url": "https://yt3.ggpht.com/-xRQVNtDSO3w/AAAAAAAAAAI/AAAAAAAAAAA/Is9D9D7wwAE/s64-c-k-no-mo-rj-c0xffffff/photo.jpg",
-                                                "width": 64,
-                                                "height": 64
-                                            }
-                                        ]
-                                    },
-                                    "authorName": {
-                                        "simpleText": "りお"
-                                    },
-                                    "authorExternalChannelId": "UCLok9Gxa1Z6F9Ul2aKvLFFg",
-                                    "sticker": {
-                                        "thumbnails": [
-                                            {
-                                                "url": "//lh3.googleusercontent.com/1aIk6vlk4gZ2ytc42j3WcIHYtWFWo2uVWVqbHFuxiGHO4XwyAS0u8vuu6VkiX5eR6uy9mfAupyP786_TbP0=s72-rwa",
-                                                "width": 72,
-                                                "height": 72
-                                            },
-                                            {
-                                                "url": "//lh3.googleusercontent.com/1aIk6vlk4gZ2ytc42j3WcIHYtWFWo2uVWVqbHFuxiGHO4XwyAS0u8vuu6VkiX5eR6uy9mfAupyP786_TbP0=s144-rwa",
-                                                "width": 144,
-                                                "height": 144
-                                            }
-                                        ],
-                                        "accessibility": {
-                                            "accessibilityData": {
-                                                "label": "気付いてもらえるように人差し指を上げたり下げたりしている柴犬"
-                                            }
-                                        }
-                                    },
-                                    "moneyChipBackgroundColor": 4278248959,
-                                    "moneyChipTextColor": 4278190080,
-                                    "purchaseAmountText": {
-                                        "simpleText": "￥200"
-                                    },
-                                    "stickerDisplayWidth": 72,
-                                    "stickerDisplayHeight": 72,
-                                    "backgroundColor": 4278237396,
-                                    "authorNameTextColor": 3003121664
-                                }
-                            }
-                        }
-                    }
-                ]
-            }
-        }
+  "xsrf_token": "QUFFLUhqbWVqWVRTUjhBcGRkNWR5Q2F3VWhxcTd0RkF1UXxBQ3Jtc0trMThFVGVVNTFnWmZucnkwNlJJMEZ2bndUS1I3b2dpLUtTNE92dEgwX3Y0MkNZU2NXdGY1QTMtX09BUGphYUpDQlc1dFhiTm9jLS1sQXVCNHpsdllqcm1id0t1RFBCM3A1b2o3OGt0Yjd6TE5wcmxBbjNyQktjc1lWZ3hjM1RuYk83YkQ0VVN3MGUybjAwSE90SS1YNkxvMUV5YVE=",
+  "timing": {
+    "info": {
+      "st": 148
    }
-}
+  },
+  "endpoint": {
+    "commandMetadata": {
+      "webCommandMetadata": {
+        "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCja2bHMpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DXxuTMpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABxM3xzKT75AI%253D"
+      }
+    },
+    "urlEndpoint": {
+      "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCja2bHMpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DXxuTMpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABxM3xzKT75AI%253D"
+    }
+  },
+  "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCja2bHMpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DXxuTMpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABxM3xzKT75AI%253D",
+  "csn": "n2STXd2iKZr2gAOt9qvgCg",
+  "responseContext": {
+    "serviceTrackingParams": [
+      {
+        "service": "CSI",
+        "params": [
+          {
+            "key": "GetLiveChat_rid",
+            "value": "0x9290108c05344647"
+          },
+          {
+            "key": "c",
+            "value": "WEB"
+          },
+          {
+            "key": "cver",
+            "value": "2.20191001.04.00"
+          },
+          {
+            "key": "yt_li",
+            "value": "0"
+          }
+        ]
+      },
+      {
+        "service": "GFEEDBACK",
+        "params": [
+          {
+            "key": "e",
+            "value": "23744176,23788875,23793834,23794620,23804281,23806159,23816483,23819244,23820768,23826780,23827354,23830392,23832125,23835020,23836965,23837741,23837772,23837993,23838235,23839362,23840155,23840217,23841118,23841454,23842630,23842662,23842883,23842986,23843289,23843534,23843767,23845644,9449243,9471239,9474360"
+          },
+          {
+            "key": "logged_in",
+            "value": "0"
+          }
+        ]
+      },
+      {
+        "service": "GUIDED_HELP",
+        "params": [
+          {
+            "key": "logged_in",
+            "value": "0"
+          }
+        ]
+      },
+      {
+        "service": "ECATCHER",
+        "params": [
+          {
+            "key": "client.name",
+            "value": "WEB"
+          },
+          {
+            "key": "client.version",
+            "value": "2.20191001"
+          },
+          {
+            "key": "innertube.build.changelist",
+            "value": "272006966"
+          },
+          {
+            "key": "innertube.build.experiments.source_version",
+            "value": "272166268"
+          },
+          {
+            "key": "innertube.build.label",
+            "value": "youtube.ytfe.innertube_20190930_5_RC0"
+          },
+          {
+            "key": "innertube.build.timestamp",
+            "value": "1569863426"
+          },
+          {
+            "key": "innertube.build.variants.checksum",
+            "value": "1a800c1a2396906f1cbb7f670d43b6f5"
+          },
+          {
+            "key": "innertube.run.job",
+            "value": "ytfe-innertube-replica-only.ytfe"
+          }
+        ]
+      }
+    ],
+    "webResponseContextExtensionData": {
+      "ytConfigData": {
+        "csn": "n2STXd2iKZr2gAOt9qvgCg",
+        "visitorData": "CgtPQm1xTmtvNm1Tcyifyc3sBQ%3D%3D"
+      }
+    }
+  },
+  "continuationContents": {
+    "liveChatContinuation": {
+      "continuations": [
+        {
+          "timedContinuationData": {
+            "timeoutMs": 8860,
+            "continuation": "0ofMyAPiARp8Q2c4S0RRb0xPREJQZW5SS2FIVTNOemdhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5T0RCUGVuUkthSFUzTnpnbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCid_ejQpPvkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQwJKPoqT75AJYA1DF-ovRpPvkAliL_fvZoPvkAmgBggEECAEQAIgBAKABtNic0aT75AI%3D"
+          }
+        }
+      ],
+      "actions": [
+        {
+          "addChatItemAction": {
+            "item": {
+              "liveChatPaidStickerRenderer": {
+                "id": "ChwKGkNQX2Qzb2pUcU9VQ0ZRdnVXQW9kaTNJS3NB",
+                "contextMenuEndpoint": {
+                  "commandMetadata": {
+                    "webCommandMetadata": {
+                      "ignoreNavigation": true
+                    }
+                  },
+                  "liveChatItemContextMenuEndpoint": {
+                    "params": "Q2g0S0hBb2FRMUJmWkROdmFsUnhUMVZEUmxGMmRWZEJiMlJwTTBsTGMwRVFBQm80Q2cwS0N6VlVUSE42U0hNd2QxYzBLaWNLR0ZWRFdGSnNTVXN6UTNkZlZFcEpVVU0xYTFOS1NsRk5aeElMTlZSTWMzcEljekIzVnpRZ0FpZ0JNaG9LR0ZWRFRHOXJPVWQ0WVRGYU5rWTVWV3d5WVV0MlRFWkdadyUzRCUzRA=="
+                  }
+                },
+                "contextMenuAccessibility": {
+                  "accessibilityData": {
+                    "label": "コメントの操作"
+                  }
+                },
+                "timestampUsec": "1571499325098699",
+                "authorPhoto": {
+                  "thumbnails": [
+                    {
+                      "url": "https: //yt3.ggpht.com/-xRQVNtDSO3w/AAAAAAAAAAI/AAAAAAAAAAA/Is9D9D7wwAE/s32-c-k-no-mo-rj-c0xffffff/photo.jpg",
+                      "width": 32,
+                      "height": 32
+                    },
+                    {
+                      "url": "https://yt3.ggpht.com/-xRQVNtDSO3w/AAAAAAAAAAI/AAAAAAAAAAA/Is9D9D7wwAE/s64-c-k-no-mo-rj-c0xffffff/photo.jpg",
+                      "width": 64,
+                      "height": 64
+                    }
+                  ]
+                },
+                "authorName": {
+                  "simpleText": "りお"
+                },
+                "authorExternalChannelId": "UCLok9Gxa1Z6F9Ul2aKvLFFg",
+                "sticker": {
+                  "thumbnails": [
+                    {
+                      "url": "//lh3.googleusercontent.com/1aIk6vlk4gZ2ytc42j3WcIHYtWFWo2uVWVqbHFuxiGHO4XwyAS0u8vuu6VkiX5eR6uy9mfAupyP786_TbP0=s72-rwa",
+                      "width": 72,
+                      "height": 72
+                    },
+                    {
+                      "url": "//lh3.googleusercontent.com/1aIk6vlk4gZ2ytc42j3WcIHYtWFWo2uVWVqbHFuxiGHO4XwyAS0u8vuu6VkiX5eR6uy9mfAupyP786_TbP0=s144-rwa",
+                      "width": 144,
+                      "height": 144
+                    }
+                  ],
+                  "accessibility": {
+                    "accessibilityData": {
+                      "label": "気付いてもらえるように人差し指を上げたり下げたりしている柴犬"
+                    }
+                  }
+                },
+                "moneyChipBackgroundColor": 4278248959,
+                "moneyChipTextColor": 4278190080,
+                "purchaseAmountText": {
+                  "simpleText": "￥200"
+                },
+                "stickerDisplayWidth": 72,
+                "stickerDisplayHeight": 72,
+                "backgroundColor": 4278237396,
+                "authorNameTextColor": 3003121664
+              }
+            }
+          }
+        }
+      ]
+    }
+  }
+}
--- a/tests/testdata/compatible/textmessage.json
+++ b/tests/testdata/compatible/textmessage.json
@@ -1,177 +1,175 @@
 {
-    "response": {
-        "responseContext": {
-            "serviceTrackingParams": [
-                {
-                    "service": "CSI",
-                    "params": [
-                        {
-                            "key": "GetLiveChat_rid",
-                            "value": "0x3eff0db28fc39bbe"
-                        },
-                        {
-                            "key": "c",
-                            "value": "WEB"
-                        },
-                        {
-                            "key": "cver",
-                            "value": "2.20190920.05.01"
-                        },
-                        {
-                            "key": "yt_li",
-                            "value": "0"
-                        }
-                    ]
-                },
-                {
-                    "service": "GFEEDBACK",
-                    "params": [
-                        {
-                            "key": "e",
-                            "value": "23744176,23748146,23788851,23788875,23793834,23804281,23807353,23808952,23828082,23828243,23829333,23832544,23834418,23834656,23835020,23836434,23836965,23837742,23837772,23837993,23838301,23838576,23838576,23838742,23839360,23840216,23841655,23842986,23843288,23843533,23843743,23844780,24630231,9425362,9449243,9466592,9469037,9471235,9474358"
-                        },
-                        {
-                            "key": "logged_in",
-                            "value": "0"
-                        }
-                    ]
-                },
-                {
-                    "service": "GUIDED_HELP",
-                    "params": [
-                        {
-                            "key": "logged_in",
-                            "value": "0"
-                        }
-                    ]
-                },
-                {
-                    "service": "ECATCHER",
-                    "params": [
-                        {
-                            "key": "client.name",
-                            "value": "WEB"
-                        },
-                        {
-                            "key": "client.version",
-                            "value": "2.20190920"
-                        },
-                        {
-                            "key": "innertube.build.changelist",
-                            "value": "270169303"
-                        },
-                        {
-                            "key": "innertube.build.experiments.source_version",
-                            "value": "270377311"
-                        },
-                        {
-                            "key": "innertube.build.label",
-                            "value": "youtube.ytfe.innertube_20190919_5_RC1"
-                        },
-                        {
-                            "key": "innertube.build.timestamp",
-                            "value": "1568942548"
-                        },
-                        {
-                            "key": "innertube.build.variants.checksum",
-                            "value": "392d499f55b5e2c240adde58886a8143"
-                        },
-                        {
-                            "key": "innertube.run.job",
-                            "value": "ytfe-innertube-replica-only.ytfe"
-                        }
-                    ]
-                }
-            ],
-            "webResponseContextExtensionData": {
-                "ytConfigData": {
-                    "csn": "n96GXabRGouFlQTigY2YDg",
-                    "visitorData": "CgtKUldQeGJJRXhkcyifvZvsBQ%3D%3D"
-                }
-            }
-        },
-        "continuationContents": {
-            "liveChatContinuation": {
-                "continuations": [
-                    {
-                        "timedContinuationData": {
-                            "timeoutMs": 5041,
-                            "continuation": "0ofMyAPiARp8Q2c4S0RRb0xhelJMZDBsWFQwdERkalFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5YXpSTGQwbFhUMHREZGpRbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCj7hLmSs-PkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgJqXjrPj5AJYA1DsuuGSs-PkAli3pNq1k-PkAmgBggEECAEQAIgBAKAB7KDVk7Pj5AI%3D"
-                        }
-                    }
-                ],
-                "actions": [
-                    {
-                        "addChatItemAction": {
-                            "item": {
-                                "liveChatTextMessageRenderer": {
-                                    "message": {
-                                        "runs": [
-                                            {
-                                                "text": "text"
-                                            }
-                                        ]
-                                    },
-                                    "authorName": {
-                                        "simpleText": "name"
-                                    },
-                                    "authorPhoto": {
-                                        "thumbnails": [
-                                            {
-                                                "url": "https://yt3.ggpht.com/-8sLtPu1Hyw0/AAAAAAAAAAI/AAAAAAAAAAA/a_52bWnC0-s/s32-c-k-no-mo-rj-c0xffffff/photo.jpg",
-                                                "width": 32,
-                                                "height": 32
-                                            },
-                                            {
-                                                "url": "https://yt3.ggpht.com/-8sLtPu1Hyw0/AAAAAAAAAAI/AAAAAAAAAAA/a_52bWnC0-s/s64-c-k-no-mo-rj-c0xffffff/photo.jpg",
-                                                "width": 64,
-                                                "height": 64
-                                            }
-                                        ]
-                                    },
-                                    "contextMenuEndpoint": {
-                                        "commandMetadata": {
-                                            "webCommandMetadata": {
-                                                "ignoreNavigation": true
-                                            }
-                                        },
-                                        "liveChatItemContextMenuEndpoint": {
-                                            "params": "Q2pzS09Rb2FRMHRQTkhRMVEzbzBMVkZEUmxweGRrUlJiMlJZV0d0QlVHY1NHME5PYm5OdlVESm1OQzFSUTBaUmRsTlhRVzlrVVZGclJUTlJNeEFBR2pnS0RRb0xhelJMZDBsWFQwdERkalFxSndvWVZVTnZTWEZ1TVZvMWFYaERXbmRqTUVSWFNqZHlTME5uRWd0ck5FdDNTVmRQUzBOMk5DQUNLQUV5R2dvWVZVTnlOVGxXVlY5amRtWnlkVEF0YW1GeWNtUk1NMDEz"
-                                        }
-                                    },
-                                    "id": "CjkKGkNLTzR0NUN6NC1RQ0ZacXZEUW9kWFhrQVBnEhtDTm5zb1AyZjQtUUNGUXZTV0FvZFFRa0UzUTM%3D",
-                                    "timestampUsec": "1569119896722467",
-                                    "authorExternalChannelId": "UCr59VU_cvfru0-jarrdL3Mw",
-                                    "contextMenuAccessibility": {
-                                        "accessibilityData": {
-                                            "label": "コメントの操作"
-                                        }
-                                    }
-                                }
-                            },
-                            "clientId": "CNnsoP2f4-QCFQvSWAodQQkE3Q3"
-                        }
-                    }
-                ]
-            }
-        }
-    },
-    "endpoint": {
-        "commandMetadata": {
-            "webCommandMetadata": {
-                "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xhelJMZDBsWFQwdERkalFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5YXpSTGQwbFhUMHREZGpRbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCiPz5-Os-PkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgJqXjrPj5AJYA1CRwciOs-PkAli3pNq1k-PkAmgBggEECAEQAIgBAKABjbfnjrPj5AI%253D"
-            }
-        },
-        "urlEndpoint": {
-            "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xhelJMZDBsWFQwdERkalFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5YXpSTGQwbFhUMHREZGpRbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCiPz5-Os-PkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgJqXjrPj5AJYA1CRwciOs-PkAli3pNq1k-PkAmgBggEECAEQAIgBAKABjbfnjrPj5AI%253D"
-        }
-    },
-    "csn": "n96GXabRGouFlQTigY2YDg",
-    "xsrf_token": "QUFFLUhqbHNNWTF3NFJqc2h3cGE1NE9FWGdaWk5mRlVhUXxBQ3Jtc0tuTWhZNFcyTW1iZnA3ZnFTYUFudVFEUVE0cnFEOVBGcEU1MEh0Zlh4bll1amVmRl9OMkxZV3pKV1ZSbExBeDctTl95NGtBVnJZdlNxeS1KdWVNempEN2N6MHhaU1laV3hnVkZPeHp1OHVDTGVFSGUyOGduT0szbDV5N05LYUZTdzdoTDRwV1VJWndaVjdQVGRjNWVpR0YwUXgtZXc=",
-    "url": "\/live_chat\/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xhelJMZDBsWFQwdERkalFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5YXpSTGQwbFhUMHREZGpRbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCiPz5-Os-PkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgJqXjrPj5AJYA1CRwciOs-PkAli3pNq1k-PkAmgBggEECAEQAIgBAKABjbfnjrPj5AI%253D",
-    "timing": {
-        "info": {
-            "st": 81
-        }
+  "responseContext": {
+    "serviceTrackingParams": [
+      {
+        "service": "CSI",
+        "params": [
+          {
+            "key": "GetLiveChat_rid",
+            "value": "0x3eff0db28fc39bbe"
+          },
+          {
+            "key": "c",
+            "value": "WEB"
+          },
+          {
+            "key": "cver",
+            "value": "2.20190920.05.01"
+          },
+          {
+            "key": "yt_li",
+            "value": "0"
+          }
+        ]
+      },
+      {
+        "service": "GFEEDBACK",
+        "params": [
+          {
+            "key": "e",
+            "value": "23744176,23748146,23788851,23788875,23793834,23804281,23807353,23808952,23828082,23828243,23829333,23832544,23834418,23834656,23835020,23836434,23836965,23837742,23837772,23837993,23838301,23838576,23838576,23838742,23839360,23840216,23841655,23842986,23843288,23843533,23843743,23844780,24630231,9425362,9449243,9466592,9469037,9471235,9474358"
+          },
+          {
+            "key": "logged_in",
+            "value": "0"
+          }
+        ]
+      },
+      {
+        "service": "GUIDED_HELP",
+        "params": [
+          {
+            "key": "logged_in",
+            "value": "0"
+          }
+        ]
+      },
+      {
+        "service": "ECATCHER",
+        "params": [
+          {
+            "key": "client.name",
+            "value": "WEB"
+          },
+          {
+            "key": "client.version",
+            "value": "2.20190920"
+          },
+          {
+            "key": "innertube.build.changelist",
+            "value": "270169303"
+          },
+          {
+            "key": "innertube.build.experiments.source_version",
+            "value": "270377311"
+          },
+          {
+            "key": "innertube.build.label",
+            "value": "youtube.ytfe.innertube_20190919_5_RC1"
+          },
+          {
+            "key": "innertube.build.timestamp",
+            "value": "1568942548"
+          },
+          {
+            "key": "innertube.build.variants.checksum",
+            "value": "392d499f55b5e2c240adde58886a8143"
+          },
+          {
+            "key": "innertube.run.job",
+            "value": "ytfe-innertube-replica-only.ytfe"
+          }
+        ]
+      }
+    ],
+    "webResponseContextExtensionData": {
+      "ytConfigData": {
+        "csn": "n96GXabRGouFlQTigY2YDg",
+        "visitorData": "CgtKUldQeGJJRXhkcyifvZvsBQ%3D%3D"
+      }
    }
-}
+  },
+  "continuationContents": {
+    "liveChatContinuation": {
+      "continuations": [
+        {
+          "timedContinuationData": {
+            "timeoutMs": 5041,
+            "continuation": "0ofMyAPiARp8Q2c4S0RRb0xhelJMZDBsWFQwdERkalFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5YXpSTGQwbFhUMHREZGpRbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCj7hLmSs-PkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgJqXjrPj5AJYA1DsuuGSs-PkAli3pNq1k-PkAmgBggEECAEQAIgBAKAB7KDVk7Pj5AI%3D"
+          }
+        }
+      ],
+      "actions": [
+        {
+          "addChatItemAction": {
+            "item": {
+              "liveChatTextMessageRenderer": {
+                "message": {
+                  "runs": [
+                    {
+                      "text": "text"
+                    }
+                  ]
+                },
+                "authorName": {
+                  "simpleText": "name"
+                },
+                "authorPhoto": {
+                  "thumbnails": [
+                    {
+                      "url": "https://yt3.ggpht.com/-8sLtPu1Hyw0/AAAAAAAAAAI/AAAAAAAAAAA/a_52bWnC0-s/s32-c-k-no-mo-rj-c0xffffff/photo.jpg",
+                      "width": 32,
+                      "height": 32
+                    },
+                    {
+                      "url": "https://yt3.ggpht.com/-8sLtPu1Hyw0/AAAAAAAAAAI/AAAAAAAAAAA/a_52bWnC0-s/s64-c-k-no-mo-rj-c0xffffff/photo.jpg",
+                      "width": 64,
+                      "height": 64
+                    }
+                  ]
+                },
+                "contextMenuEndpoint": {
+                  "commandMetadata": {
+                    "webCommandMetadata": {
+                      "ignoreNavigation": true
+                    }
+                  },
+                  "liveChatItemContextMenuEndpoint": {
+                    "params": "Q2pzS09Rb2FRMHRQTkhRMVEzbzBMVkZEUmxweGRrUlJiMlJZV0d0QlVHY1NHME5PYm5OdlVESm1OQzFSUTBaUmRsTlhRVzlrVVZGclJUTlJNeEFBR2pnS0RRb0xhelJMZDBsWFQwdERkalFxSndvWVZVTnZTWEZ1TVZvMWFYaERXbmRqTUVSWFNqZHlTME5uRWd0ck5FdDNTVmRQUzBOMk5DQUNLQUV5R2dvWVZVTnlOVGxXVlY5amRtWnlkVEF0YW1GeWNtUk1NMDEz"
+                  }
+                },
+                "id": "CjkKGkNLTzR0NUN6NC1RQ0ZacXZEUW9kWFhrQVBnEhtDTm5zb1AyZjQtUUNGUXZTV0FvZFFRa0UzUTM%3D",
+                "timestampUsec": "1569119896722467",
+                "authorExternalChannelId": "UCr59VU_cvfru0-jarrdL3Mw",
+                "contextMenuAccessibility": {
+                  "accessibilityData": {
+                    "label": "コメントの操作"
+                  }
+                }
+              }
+            },
+            "clientId": "CNnsoP2f4-QCFQvSWAodQQkE3Q3"
+          }
+        }
+      ]
+    }
+  },
+  "endpoint": {
+    "commandMetadata": {
+      "webCommandMetadata": {
+        "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xhelJMZDBsWFQwdERkalFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5YXpSTGQwbFhUMHREZGpRbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCiPz5-Os-PkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgJqXjrPj5AJYA1CRwciOs-PkAli3pNq1k-PkAmgBggEECAEQAIgBAKABjbfnjrPj5AI%253D"
+      }
+    },
+    "urlEndpoint": {
+      "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xhelJMZDBsWFQwdERkalFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5YXpSTGQwbFhUMHREZGpRbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCiPz5-Os-PkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgJqXjrPj5AJYA1CRwciOs-PkAli3pNq1k-PkAmgBggEECAEQAIgBAKABjbfnjrPj5AI%253D"
+    }
+  },
+  "csn": "n96GXabRGouFlQTigY2YDg",
+  "xsrf_token": "QUFFLUhqbHNNWTF3NFJqc2h3cGE1NE9FWGdaWk5mRlVhUXxBQ3Jtc0tuTWhZNFcyTW1iZnA3ZnFTYUFudVFEUVE0cnFEOVBGcEU1MEh0Zlh4bll1amVmRl9OMkxZV3pKV1ZSbExBeDctTl95NGtBVnJZdlNxeS1KdWVNempEN2N6MHhaU1laV3hnVkZPeHp1OHVDTGVFSGUyOGduT0szbDV5N05LYUZTdzdoTDRwV1VJWndaVjdQVGRjNWVpR0YwUXgtZXc=",
+  "url": "/live_chat/get_live_chat?continuation=0ofMyAPiARp8Q2c4S0RRb0xhelJMZDBsWFQwdERkalFhUTZxNXdiMEJQUW83YUhSMGNITTZMeTkzZDNjdWVXOTFkSFZpWlM1amIyMHZiR2wyWlY5amFHRjBQM1k5YXpSTGQwbFhUMHREZGpRbWFYTmZjRzl3YjNWMFBURWdBZyUzRCUzRCiPz5-Os-PkAjAAOABAAUorCAAQABgAIAAqDnN0YXRpY2NoZWNrc3VtOgBAAEoCCAFQgJqXjrPj5AJYA1CRwciOs-PkAli3pNq1k-PkAmgBggEECAEQAIgBAKABjbfnjrPj5AI%253D",
+  "timing": {
+    "info": {
+      "st": 81
+    }
+  }
+}
--- a/tests/testdata/default/newSponsor_current.json
+++ b/tests/testdata/default/newSponsor_current.json
@@ -0,0 +1,98 @@
+{
+  "responseContext": {
+    "webResponseContextExtensionData": ""
+  },
+  "continuationContents": {
+    "liveChatContinuation": {
+      "continuations": [
+        {
+          "invalidationContinuationData": {
+            "invalidationId": {
+              "objectSource": 1000,
+              "objectId": "___objectId___",
+              "topic": "chat~00000000000~0000000",
+              "subscribeToGcmTopics": true,
+              "protoCreationTimestampMs": "1577804400000"
+            },
+            "timeoutMs": 10000,
+            "continuation": "___continuation___"
+          }
+        }
+      ],
+      "actions": [
+        {
+          "addChatItemAction": {
+            "item": {
+              "liveChatMembershipItemRenderer": {
+                "id": "dummy_id",
+                "timestampUsec": 1570678496000000,
+                "authorExternalChannelId": "author_channel_id",
+                "headerSubtext": {
+                  "runs": [
+                    {
+                      "text": "新規メンバー"
+                    }
+                  ]
+                },
+                "authorName": {
+                  "simpleText": "author_name"
+                },
+                "authorPhoto": {
+                  "thumbnails": [
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 32,
+                      "height": 32
+                    },
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 64,
+                      "height": 64
+                    }
+                  ]
+                },
+                "authorBadges": [
+                  {
+                    "liveChatAuthorBadgeRenderer": {
+                      "customThumbnail": {
+                        "thumbnails": [
+                          {
+                            "url": "https://yt3.ggpht.com/X=s32-c-k"
+                          },
+                          {
+                            "url": "https://yt3.ggpht.com/X=s64-c-k"
+                          }
+                        ]
+                      },
+                      "tooltip": "新規メンバー",
+                      "accessibility": {
+                        "accessibilityData": {
+                          "label": "新規メンバー"
+                        }
+                      }
+                    }
+                  }
+                ],
+                "contextMenuEndpoint": {
+                  "commandMetadata": {
+                    "webCommandMetadata": {
+                      "ignoreNavigation": true
+                    }
+                  },
+                  "liveChatItemContextMenuEndpoint": {
+                    "params": "___params___"
+                  }
+                },
+                "contextMenuAccessibility": {
+                  "accessibilityData": {
+                    "label": "コメントの操作"
+                  }
+                }
+              }
+            }
+          }
+        }
+      ]
+    }
+  }
+}
--- a/tests/testdata/default/newSponsor_lagacy.json
+++ b/tests/testdata/default/newSponsor_lagacy.json
@@ -0,0 +1,80 @@
+{
+  "responseContext": {
+    "webResponseContextExtensionData": ""
+  },
+  "continuationContents": {
+    "liveChatContinuation": {
+      "continuations": [
+        {
+          "invalidationContinuationData": {
+            "invalidationId": {
+              "objectSource": 1000,
+              "objectId": "___objectId___",
+              "topic": "chat~00000000000~0000000",
+              "subscribeToGcmTopics": true,
+              "protoCreationTimestampMs": "1577804400000"
+            },
+            "timeoutMs": 10000,
+            "continuation": "___continuation___"
+          }
+        }
+      ],
+      "actions": [
+        {
+          "addChatItemAction": {
+            "item": {
+              "liveChatLegacyPaidMessageRenderer": {
+                "id": "dummy_id",
+                "timestampUsec": 1570678496000000,
+                "eventText": {
+                  "runs": [
+                    {
+                      "text": "新規メンバー"
+                    }
+                  ]
+                },
+                "detailText": {
+                  "simpleText": "ようこそ、author_name！"
+                },
+                "authorName": {
+                  "simpleText": "author_name"
+                },
+                "authorPhoto": {
+                  "thumbnails": [
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 32,
+                      "height": 32
+                    },
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 64,
+                      "height": 64
+                    }
+                  ]
+                },
+                "authorExternalChannelId": "author_channel_id",
+                "contextMenuEndpoint": {
+                  "clickTrackingParams": "___clickTrackingParams___",
+                  "commandMetadata": {
+                    "webCommandMetadata": {
+                      "ignoreNavigation": true
+                    }
+                  },
+                  "liveChatItemContextMenuEndpoint": {
+                    "params": "___params___"
+                  }
+                },
+                "contextMenuAccessibility": {
+                  "accessibilityData": {
+                    "label": "コメントの操作"
+                  }
+                }
+              }
+            }
+          }
+        }
+      ]
+    }
+  }
+}
--- a/tests/testdata/default/replay_member_text.json
+++ b/tests/testdata/default/replay_member_text.json
@@ -0,0 +1,110 @@
+{
+  "responseContext": {
+    "webResponseContextExtensionData": "data"
+  },
+  "continuationContents": {
+    "liveChatContinuation": {
+      "continuations": [
+        {
+          "liveChatReplayContinuationData": {
+            "invalidationId": {
+              "objectSource": 1000,
+              "objectId": "___objectId___",
+              "topic": "chat~00000000000~0000000",
+              "subscribeToGcmTopics": true,
+              "protoCreationTimestampMs": "1577804400000"
+            },
+            "timeoutMs": 10000,
+            "continuation": "___continuation___"
+          }
+        }
+      ],
+      "actions": [
+        {
+          "replayChatItemAction": {
+            "actions": [
+              {
+                "addChatItemAction": {
+                  "item": {
+                    "liveChatTextMessageRenderer": {
+                      "message": {
+                        "runs": [
+                          {
+                            "text": "dummy_message"
+                          }
+                        ]
+                      },
+                      "authorName": {
+                        "simpleText": "author_name"
+                      },
+                      "authorPhoto": {
+                        "thumbnails": [
+                          {
+                            "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                            "width": 32,
+                            "height": 32
+                          },
+                          {
+                            "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                            "width": 64,
+                            "height": 64
+                          }
+                        ]
+                      },
+                      "contextMenuEndpoint": {
+                        "clickTrackingParams": "___clickTrackingParams___",
+                        "commandMetadata": {
+                          "webCommandMetadata": {
+                            "ignoreNavigation": true
+                          }
+                        },
+                        "liveChatItemContextMenuEndpoint": {
+                          "params": "___params___"
+                        }
+                      },
+                      "id": "dummy_id",
+                      "timestampUsec": 1570678496000000,
+                      "authorBadges": [
+                        {
+                          "liveChatAuthorBadgeRenderer": {
+                            "customThumbnail": {
+                              "thumbnails": [
+                                {
+                                  "url": "https://yt3.ggpht.com/X=s16-c-k"
+                                },
+                                {
+                                  "url": "https://yt3.ggpht.com/X=s32-c-k"
+                                }
+                              ]
+                            },
+                            "tooltip": "メンバー（1 か月）",
+                            "accessibility": {
+                              "accessibilityData": {
+                                "label": "メンバー（1 か月）"
+                              }
+                            }
+                          }
+                        }
+                      ],
+                      "authorExternalChannelId": "author_channel_id",
+                      "contextMenuAccessibility": {
+                        "accessibilityData": {
+                          "label": "コメントの操作"
+                        }
+                      },
+                      "timestampText": {
+                        "simpleText": "1:23:45"
+                      }
+                    }
+                  },
+                  "clientId": "dummy_client_id"
+                }
+              }
+            ],
+            "videoOffsetTimeMsec": "5025120"
+          }
+        }
+      ]
+    }
+  }
+}
--- a/tests/testdata/default/superchat.json
+++ b/tests/testdata/default/superchat.json
@@ -0,0 +1,182 @@
+{
+  "responseContext": {
+    "webResponseContextExtensionData": ""
+  },
+  "continuationContents": {
+    "liveChatContinuation": {
+      "continuations": [
+        {
+          "invalidationContinuationData": {
+            "invalidationId": {
+              "objectSource": 1000,
+              "objectId": "___objectId___",
+              "topic": "chat~00000000000~0000000",
+              "subscribeToGcmTopics": true,
+              "protoCreationTimestampMs": "1577804400000"
+            },
+            "timeoutMs": 10000,
+            "continuation": "___continuation___"
+          }
+        }
+      ],
+      "actions": [
+        {
+          "addChatItemAction": {
+            "item": {
+              "liveChatPaidMessageRenderer": {
+                "id": "dummy_id",
+                "timestampUsec": 1570678496000000,
+                "authorName": {
+                  "simpleText": "author_name"
+                },
+                "authorPhoto": {
+                  "thumbnails": [
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 32,
+                      "height": 32
+                    },
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 64,
+                      "height": 64
+                    }
+                  ]
+                },
+                "purchaseAmountText": {
+                  "simpleText": "￥800"
+                },
+                "message": {
+                  "runs": [
+                    {
+                      "text": "dummy_message"
+                    }
+                  ]
+                },
+                "headerBackgroundColor": 4278239141,
+                "headerTextColor": 4278190080,
+                "bodyBackgroundColor": 4280150454,
+                "bodyTextColor": 4278190080,
+                "authorExternalChannelId": "author_channel_id",
+                "authorNameTextColor": 2315255808,
+                "contextMenuEndpoint": {
+                  "commandMetadata": {
+                    "webCommandMetadata": {
+                      "ignoreNavigation": true
+                    }
+                  },
+                  "liveChatItemContextMenuEndpoint": {
+                    "params": "___params___"
+                  }
+                },
+                "timestampColor": 2147483648,
+                "contextMenuAccessibility": {
+                  "accessibilityData": {
+                    "label": "コメントの操作"
+                  }
+                }
+              }
+            }
+          }
+        },
+        {
+          "addLiveChatTickerItemAction": {
+            "item": {
+              "liveChatTickerPaidMessageItemRenderer": {
+                "id": "dummy_id",
+                "amount": {
+                  "simpleText": "￥846"
+                },
+                "amountTextColor": 4278190080,
+                "startBackgroundColor": 4280150454,
+                "endBackgroundColor": 4278239141,
+                "authorPhoto": {
+                  "thumbnails": [
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 32,
+                      "height": 32
+                    },
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 64,
+                      "height": 64
+                    }
+                  ]
+                },
+                "durationSec": 120,
+                "showItemEndpoint": {
+                  "commandMetadata": {
+                    "webCommandMetadata": {
+                      "ignoreNavigation": true
+                    }
+                  },
+                  "showLiveChatItemEndpoint": {
+                    "renderer": {
+                      "liveChatPaidMessageRenderer": {
+                        "id": "dummy_id",
+                        "timestampUsec": 1570678496000000,
+                        "authorName": {
+                          "simpleText": "author_name"
+                        },
+                        "authorPhoto": {
+                          "thumbnails": [
+                            {
+                              "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                              "width": 32,
+                              "height": 32
+                            },
+                            {
+                              "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                              "width": 64,
+                              "height": 64
+                            }
+                          ]
+                        },
+                        "purchaseAmountText": {
+                          "simpleText": "￥846"
+                        },
+                        "message": {
+                          "runs": [
+                            {
+                              "text": "dummy_message"
+                            }
+                          ]
+                        },
+                        "headerBackgroundColor": 4278239141,
+                        "headerTextColor": 4278190080,
+                        "bodyBackgroundColor": 4280150454,
+                        "bodyTextColor": 4278190080,
+                        "authorExternalChannelId": "author_channel_id",
+                        "authorNameTextColor": 2315255808,
+                        "contextMenuEndpoint": {
+                          "commandMetadata": {
+                            "webCommandMetadata": {
+                              "ignoreNavigation": true
+                            }
+                          },
+                          "liveChatItemContextMenuEndpoint": {
+                            "params": "___params___"
+                          }
+                        },
+                        "timestampColor": 2147483648,
+                        "contextMenuAccessibility": {
+                          "accessibilityData": {
+                            "label": "コメントの操作"
+                          }
+                        }
+                      }
+                    }
+                  }
+                },
+                "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
+                "fullDurationSec": 120
+              }
+            },
+            "durationSec": "120"
+          }
+        }
+      ]
+    }
+  }
+}
--- a/tests/testdata/default/supersticker.json
+++ b/tests/testdata/default/supersticker.json
@@ -0,0 +1,97 @@
+{
+  "responseContext": {
+    "webResponseContextExtensionData": ""
+  },
+  "continuationContents": {
+    "liveChatContinuation": {
+      "continuations": [
+        {
+          "invalidationContinuationData": {
+            "invalidationId": {
+              "objectSource": 1000,
+              "objectId": "___objectId___",
+              "topic": "chat~00000000000~0000000",
+              "subscribeToGcmTopics": true,
+              "protoCreationTimestampMs": "1577804400000"
+            },
+            "timeoutMs": 10000,
+            "continuation": "___continuation___"
+          }
+        }
+      ],
+      "actions": [
+        {
+          "addChatItemAction": {
+            "item": {
+              "liveChatPaidStickerRenderer": {
+                "id": "dummy_id",
+                "contextMenuEndpoint": {
+                  "commandMetadata": {
+                    "webCommandMetadata": {
+                      "ignoreNavigation": true
+                    }
+                  },
+                  "liveChatItemContextMenuEndpoint": {
+                    "params": "___params___"
+                  }
+                },
+                "contextMenuAccessibility": {
+                  "accessibilityData": {
+                    "label": "コメントの操作"
+                  }
+                },
+                "timestampUsec": 1570678496000000,
+                "authorPhoto": {
+                  "thumbnails": [
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 32,
+                      "height": 32
+                    },
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 64,
+                      "height": 64
+                    }
+                  ]
+                },
+                "authorName": {
+                  "simpleText": "author_name"
+                },
+                "authorExternalChannelId": "author_channel_id",
+                "sticker": {
+                  "thumbnails": [
+                    {
+                      "url": "//lh3.googleusercontent.com/param_s=s72-rp",
+                      "width": 72,
+                      "height": 72
+                    },
+                    {
+                      "url": "//lh3.googleusercontent.com/param_s=s144-rp",
+                      "width": 144,
+                      "height": 144
+                    }
+                  ],
+                  "accessibility": {
+                    "accessibilityData": {
+                      "label": "___sticker_label___"
+                    }
+                  }
+                },
+                "moneyChipBackgroundColor": 4278248959,
+                "moneyChipTextColor": 4278190080,
+                "purchaseAmountText": {
+                  "simpleText": "￥200"
+                },
+                "stickerDisplayWidth": 72,
+                "stickerDisplayHeight": 72,
+                "backgroundColor": 4278237396,
+                "authorNameTextColor": 3003121664
+              }
+            }
+          }
+        }
+      ]
+    }
+  }
+}
--- a/tests/testdata/default/textmessage.json
+++ b/tests/testdata/default/textmessage.json
@@ -0,0 +1,77 @@
+{
+  "responseContext": {
+    "webResponseContextExtensionData": ""
+  },
+  "continuationContents": {
+    "liveChatContinuation": {
+      "continuations": [
+        {
+          "invalidationContinuationData": {
+            "invalidationId": {
+              "objectSource": 1000,
+              "objectId": "___objectId___",
+              "topic": "chat~00000000000~0000000",
+              "subscribeToGcmTopics": true,
+              "protoCreationTimestampMs": "1577804400000"
+            },
+            "timeoutMs": 10000,
+            "continuation": "___continuation___"
+          }
+        }
+      ],
+      "actions": [
+        {
+          "addChatItemAction": {
+            "item": {
+              "liveChatTextMessageRenderer": {
+                "message": {
+                  "runs": [
+                    {
+                      "text": "dummy_message"
+                    }
+                  ]
+                },
+                "authorName": {
+                  "simpleText": "author_name"
+                },
+                "authorPhoto": {
+                  "thumbnails": [
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 32,
+                      "height": 32
+                    },
+                    {
+                      "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s64-x-x-xx-xx-xx-c0xffffff/photo.jpg",
+                      "width": 64,
+                      "height": 64
+                    }
+                  ]
+                },
+                "contextMenuEndpoint": {
+                  "commandMetadata": {
+                    "webCommandMetadata": {
+                      "ignoreNavigation": true
+                    }
+                  },
+                  "liveChatItemContextMenuEndpoint": {
+                    "params": "___params___"
+                  }
+                },
+                "id": "dummy_id",
+                "timestampUsec": 1570678496000000,
+                "authorExternalChannelId": "author_channel_id",
+                "contextMenuAccessibility": {
+                  "accessibilityData": {
+                    "label": "コメントの操作"
+                  }
+                }
+              }
+            },
+            "clientId": "dummy_client_id"
+          }
+        }
+      ]
+    }
+  }
+}
--- a/tests/testdata/extract_duplcheck/head/dp0-0.json
+++ b/tests/testdata/extract_duplcheck/head/dp0-0.json
--- a/tests/testdata/extract_duplcheck/head/dp0-1.json
+++ b/tests/testdata/extract_duplcheck/head/dp0-1.json
--- a/tests/testdata/extract_duplcheck/head/dp0-2.json
+++ b/tests/testdata/extract_duplcheck/head/dp0-2.json
--- a/tests/testdata/extract_duplcheck/head/dp0-3.json
+++ b/tests/testdata/extract_duplcheck/head/dp0-3.json
--- a/tests/testdata/extract_duplcheck/head/dp0-4.json
+++ b/tests/testdata/extract_duplcheck/head/dp0-4.json
--- a/tests/testdata/extract_duplcheck/head/dp0-5.json
+++ b/tests/testdata/extract_duplcheck/head/dp0-5.json
--- a/tests/testdata/extract_duplcheck/overlap/dp0-0.json
+++ b/tests/testdata/extract_duplcheck/overlap/dp0-0.json
--- a/tests/testdata/extract_duplcheck/overlap/dp0-1.json
+++ b/tests/testdata/extract_duplcheck/overlap/dp0-1.json
--- a/tests/testdata/extract_duplcheck/overlap/dp0-2.json
+++ b/tests/testdata/extract_duplcheck/overlap/dp0-2.json
--- a/tests/testdata/extract_duplcheck/overlap/dp0-3.json
+++ b/tests/testdata/extract_duplcheck/overlap/dp0-3.json
--- a/tests/testdata/extract_duplcheck/overlap/dp0-4.json
+++ b/tests/testdata/extract_duplcheck/overlap/dp0-4.json
--- a/tests/testdata/extract_duplcheck/overlap/dp0-5.json
+++ b/tests/testdata/extract_duplcheck/overlap/dp0-5.json
--- a/tests/testdata/fetch_patch/pt0-0.json
+++ b/tests/testdata/fetch_patch/pt0-0.json
--- a/tests/testdata/fetch_patch/pt0-1.json
+++ b/tests/testdata/fetch_patch/pt0-1.json
--- a/Show More
+++ b/Show More