diff --git a/pytchat/paramgen/arcparam.py b/pytchat/paramgen/arcparam.py
index c5f7e07..4802e63 100644
--- a/pytchat/paramgen/arcparam.py
+++ b/pytchat/paramgen/arcparam.py
@@ -1,52 +1,40 @@
-from .pb.header_pb2 import Header
-from .pb.replay_pb2 import Continuation
+from . import enc
+from base64 import urlsafe_b64encode as b64enc
 from urllib.parse import quote
-import base64
-
-'''
-Generate continuation parameter of youtube replay chat.
-
-Author: taizan-hokuto
-
-ver 0.0.1 2019.10.05 : Initial release.
-ver 0.0.2 2020.05.30 : Use Protocol Buffers.
-'''
 
 
-def _gen_vid(video_id) -> str:
-    header = Header()
-    header.info.video.id = video_id
-    header.terminator = 1
-    return base64.urlsafe_b64encode(header.SerializeToString()).decode()
+def _header(video_id) -> str:
+    channel_id = '_' * 24
+    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)
 
 
 def _build(video_id, seektime, topchat_only) -> str:
-    chattype = 1
-    timestamp = 0
-    if topchat_only:
-        chattype = 4
-
+    chattype = 4 if topchat_only else 1
     fetch_before_start = 3
+    timestamp = 1000
     if seektime < 0:
         fetch_before_start = 4
     elif seektime == 0:
-        timestamp = 1
+        timestamp = 1000
     else:
         timestamp = int(seektime * 1000000)
-    continuation = Continuation()
-    entity = continuation.entity
-    entity.header = _gen_vid(video_id)
-    entity.timestamp = timestamp
-    entity.s6 = 0
-    entity.s7 = 0
-    entity.s8 = 0
-    entity.s9 = fetch_before_start
-    entity.s10 = ''
-    entity.s12 = chattype
-    entity.chattype.value = chattype
-    entity.s15 = 0
-    return quote(
-        base64.urlsafe_b64encode(continuation.SerializeToString()).decode())
+    header = enc.rs(3, _header(video_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, fetch_before_start)
+    s10 = enc.rs(10, enc.nm(4, 0))
+    chattype = enc.rs(14, enc.nm(1, chattype))
+    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())
 
 
 def getparam(video_id, seektime=-1, topchat_only=False) -> str:
diff --git a/pytchat/paramgen/enc.py b/pytchat/paramgen/enc.py
new file mode 100644
index 0000000..bb3ef08
--- /dev/null
+++ 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))
diff --git a/pytchat/paramgen/liveparam.py b/pytchat/paramgen/liveparam.py
index 1a13e4f..6302832 100644
--- a/pytchat/paramgen/liveparam.py
+++ b/pytchat/paramgen/liveparam.py
@@ -1,69 +1,46 @@
-from .pb.header_pb2 import Header
-from .pb.live_pb2 import Continuation
-from urllib.parse import quote
-import base64
 import random
 import time
-
-'''
-Generate continuation parameter of youtube live chat.
-
-Author: taizan-hokuto
-
-ver 0.0.1 2019.10.05 : Initial release.
-ver 0.0.2 2020.05.30 : Use Protocol Buffers.
-'''
+from . import enc
+from base64 import urlsafe_b64encode as b64enc
+from urllib.parse import quote
 
 
-def _gen_vid(video_id) -> str:
-    """generate video_id parameter.
-    Parameter
-    ---------
-        video_id : str
-
-    Return
-    ---------
-    str : base64 encoded video_id parameter.
-    """
-    header = Header()
-    header.info.video.id = video_id
-    header.terminator = 1
-    return base64.urlsafe_b64encode(header.SerializeToString()).decode()
+def _header(video_id) -> str:
+    return b64enc(enc.rs(1, enc.rs(1, enc.rs(1, video_id))) + enc.nm(4, 1))
 
 
 def _build(video_id, ts1, ts2, ts3, ts4, ts5, topchat_only) -> str:
-    chattype = 1
-    if topchat_only:
-        chattype = 4
-    continuation = Continuation()
-    entity = continuation.entity
+    chattype = 4 if topchat_only else 1
 
-    entity.header = _gen_vid(video_id)
-    entity.timestamp1 = ts1
-    entity.s6 = 0
-    entity.s7 = 0
-    entity.s8 = 1
-    entity.body.b1 = 0
-    entity.body.b2 = 0
-    entity.body.b3 = 0
-    entity.body.b4 = 0
-    entity.body.b7 = ''
-    entity.body.b8 = 0
-    entity.body.b9 = ''
-    entity.body.timestamp2 = ts2
-    entity.body.b11 = 3
-    entity.body.b15 = 0
-    entity.timestamp3 = ts3
-    entity.timestamp4 = ts4
-    entity.s13 = chattype
-    entity.chattype.value = chattype
-    entity.s17 = 0
-    entity.str19.value = 0
-    entity.timestamp5 = ts5
+    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 quote(
-        base64.urlsafe_b64encode(continuation.SerializeToString()).decode()
-    )
+    header = enc.rs(3, _header(video_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 _times(past_sec):
@@ -85,4 +62,4 @@ def getparam(video_id, past_sec=0, topchat_only=False) -> str:
     topchat_only : bool
         if True, fetch only 'top chat'
     '''
-    return _build(video_id, *_times(past_sec), topchat_only)
+    return _build(video_id, *_times(past_sec), topchat_only)
\ No newline at end of file
diff --git a/pytchat/paramgen/pb/__init__.py b/pytchat/paramgen/pb/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/pytchat/paramgen/pb/header_pb2.py b/pytchat/paramgen/pb/header_pb2.py
deleted file mode 100644
index a45550a..0000000
--- a/pytchat/paramgen/pb/header_pb2.py
+++ /dev/null
@@ -1,159 +0,0 @@
-# -*- coding: utf-8 -*-
-# Generated by the protocol buffer compiler.  DO NOT EDIT!
-# source: header.proto
-
-from google.protobuf import descriptor as _descriptor
-from google.protobuf import message as _message
-from google.protobuf import reflection as _reflection
-from google.protobuf import symbol_database as _symbol_database
-# @@protoc_insertion_point(imports)
-
-_sym_db = _symbol_database.Default()
-
-
-
-
-DESCRIPTOR = _descriptor.FileDescriptor(
-  name='header.proto',
-  package='',
-  syntax='proto3',
-  serialized_options=None,
-  create_key=_descriptor._internal_create_key,
-  serialized_pb=b'\n\x0cheader.proto\"\x13\n\x05Video\x12\n\n\x02id\x18\x01 \x01(\t\"#\n\nHeaderInfo\x12\x15\n\x05video\x18\x01 \x01(\x0b\x32\x06.Video\"7\n\x06Header\x12\x19\n\x04info\x18\x01 \x01(\x0b\x32\x0b.HeaderInfo\x12\x12\n\nterminator\x18\x04 \x01(\x05\x62\x06proto3'
-)
-
-
-
-
-_VIDEO = _descriptor.Descriptor(
-  name='Video',
-  full_name='Video',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='id', full_name='Video.id', index=0,
-      number=1, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=16,
-  serialized_end=35,
-)
-
-
-_HEADERINFO = _descriptor.Descriptor(
-  name='HeaderInfo',
-  full_name='HeaderInfo',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='video', full_name='HeaderInfo.video', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=37,
-  serialized_end=72,
-)
-
-
-_HEADER = _descriptor.Descriptor(
-  name='Header',
-  full_name='Header',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='info', full_name='Header.info', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='terminator', full_name='Header.terminator', index=1,
-      number=4, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=74,
-  serialized_end=129,
-)
-
-_HEADERINFO.fields_by_name['video'].message_type = _VIDEO
-_HEADER.fields_by_name['info'].message_type = _HEADERINFO
-DESCRIPTOR.message_types_by_name['Video'] = _VIDEO
-DESCRIPTOR.message_types_by_name['HeaderInfo'] = _HEADERINFO
-DESCRIPTOR.message_types_by_name['Header'] = _HEADER
-_sym_db.RegisterFileDescriptor(DESCRIPTOR)
-
-Video = _reflection.GeneratedProtocolMessageType('Video', (_message.Message,), {
-  'DESCRIPTOR' : _VIDEO,
-  '__module__' : 'header_pb2'
-  # @@protoc_insertion_point(class_scope:Video)
-  })
-_sym_db.RegisterMessage(Video)
-
-HeaderInfo = _reflection.GeneratedProtocolMessageType('HeaderInfo', (_message.Message,), {
-  'DESCRIPTOR' : _HEADERINFO,
-  '__module__' : 'header_pb2'
-  # @@protoc_insertion_point(class_scope:HeaderInfo)
-  })
-_sym_db.RegisterMessage(HeaderInfo)
-
-Header = _reflection.GeneratedProtocolMessageType('Header', (_message.Message,), {
-  'DESCRIPTOR' : _HEADER,
-  '__module__' : 'header_pb2'
-  # @@protoc_insertion_point(class_scope:Header)
-  })
-_sym_db.RegisterMessage(Header)
-
-
-# @@protoc_insertion_point(module_scope)
diff --git a/pytchat/paramgen/pb/live_pb2.py b/pytchat/paramgen/pb/live_pb2.py
deleted file mode 100644
index d580cdf..0000000
--- a/pytchat/paramgen/pb/live_pb2.py
+++ /dev/null
@@ -1,381 +0,0 @@
-# -*- coding: utf-8 -*-
-# Generated by the protocol buffer compiler.  DO NOT EDIT!
-# source: live.proto
-
-from google.protobuf import descriptor as _descriptor
-from google.protobuf import message as _message
-from google.protobuf import reflection as _reflection
-from google.protobuf import symbol_database as _symbol_database
-# @@protoc_insertion_point(imports)
-
-_sym_db = _symbol_database.Default()
-
-
-
-
-DESCRIPTOR = _descriptor.FileDescriptor(
-  name='live.proto',
-  package='live',
-  syntax='proto3',
-  serialized_options=None,
-  create_key=_descriptor._internal_create_key,
-  serialized_pb=b'\n\nlive.proto\x12\x04live\"\x88\x01\n\x04\x42ody\x12\n\n\x02\x62\x31\x18\x01 \x01(\x05\x12\n\n\x02\x62\x32\x18\x02 \x01(\x05\x12\n\n\x02\x62\x33\x18\x03 \x01(\x05\x12\n\n\x02\x62\x34\x18\x04 \x01(\x05\x12\n\n\x02\x62\x37\x18\x07 \x01(\t\x12\n\n\x02\x62\x38\x18\x08 \x01(\x05\x12\n\n\x02\x62\x39\x18\t \x01(\t\x12\x12\n\ntimestamp2\x18\n \x01(\x03\x12\x0b\n\x03\x62\x31\x31\x18\x0b \x01(\x05\x12\x0b\n\x03\x62\x31\x35\x18\x0f \x01(\x05\"\x19\n\x08\x43hatType\x12\r\n\x05value\x18\x01 \x01(\x05\"\x16\n\x05STR19\x12\r\n\x05value\x18\x01 \x01(\x05\"\x8a\x02\n\x12\x43ontinuationEntity\x12\x0e\n\x06header\x18\x03 \x01(\t\x12\x12\n\ntimestamp1\x18\x05 \x01(\x03\x12\n\n\x02s6\x18\x06 \x01(\x05\x12\n\n\x02s7\x18\x07 \x01(\x05\x12\n\n\x02s8\x18\x08 \x01(\x05\x12\x18\n\x04\x62ody\x18\t \x01(\x0b\x32\n.live.Body\x12\x12\n\ntimestamp3\x18\n \x01(\x03\x12\x12\n\ntimestamp4\x18\x0b \x01(\x03\x12\x0b\n\x03s13\x18\r \x01(\x05\x12 \n\x08\x63hattype\x18\x10 \x01(\x0b\x32\x0e.live.ChatType\x12\x0b\n\x03s17\x18\x11 \x01(\x05\x12\x1a\n\x05str19\x18\x13 \x01(\x0b\x32\x0b.live.STR19\x12\x12\n\ntimestamp5\x18\x14 \x01(\x03\";\n\x0c\x43ontinuation\x12+\n\x06\x65ntity\x18\xfa\xc0\x89\x39 \x01(\x0b\x32\x18.live.ContinuationEntityb\x06proto3'
-)
-
-
-
-
-_BODY = _descriptor.Descriptor(
-  name='Body',
-  full_name='live.Body',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='b1', full_name='live.Body.b1', index=0,
-      number=1, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='b2', full_name='live.Body.b2', index=1,
-      number=2, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='b3', full_name='live.Body.b3', index=2,
-      number=3, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='b4', full_name='live.Body.b4', index=3,
-      number=4, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='b7', full_name='live.Body.b7', index=4,
-      number=7, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='b8', full_name='live.Body.b8', index=5,
-      number=8, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='b9', full_name='live.Body.b9', index=6,
-      number=9, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='timestamp2', full_name='live.Body.timestamp2', index=7,
-      number=10, type=3, cpp_type=2, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='b11', full_name='live.Body.b11', index=8,
-      number=11, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='b15', full_name='live.Body.b15', index=9,
-      number=15, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=21,
-  serialized_end=157,
-)
-
-
-_CHATTYPE = _descriptor.Descriptor(
-  name='ChatType',
-  full_name='live.ChatType',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='value', full_name='live.ChatType.value', index=0,
-      number=1, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=159,
-  serialized_end=184,
-)
-
-
-_STR19 = _descriptor.Descriptor(
-  name='STR19',
-  full_name='live.STR19',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='value', full_name='live.STR19.value', index=0,
-      number=1, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=186,
-  serialized_end=208,
-)
-
-
-_CONTINUATIONENTITY = _descriptor.Descriptor(
-  name='ContinuationEntity',
-  full_name='live.ContinuationEntity',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='header', full_name='live.ContinuationEntity.header', index=0,
-      number=3, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='timestamp1', full_name='live.ContinuationEntity.timestamp1', index=1,
-      number=5, type=3, cpp_type=2, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s6', full_name='live.ContinuationEntity.s6', index=2,
-      number=6, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s7', full_name='live.ContinuationEntity.s7', index=3,
-      number=7, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s8', full_name='live.ContinuationEntity.s8', index=4,
-      number=8, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='body', full_name='live.ContinuationEntity.body', index=5,
-      number=9, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='timestamp3', full_name='live.ContinuationEntity.timestamp3', index=6,
-      number=10, type=3, cpp_type=2, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='timestamp4', full_name='live.ContinuationEntity.timestamp4', index=7,
-      number=11, type=3, cpp_type=2, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s13', full_name='live.ContinuationEntity.s13', index=8,
-      number=13, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='chattype', full_name='live.ContinuationEntity.chattype', index=9,
-      number=16, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s17', full_name='live.ContinuationEntity.s17', index=10,
-      number=17, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='str19', full_name='live.ContinuationEntity.str19', index=11,
-      number=19, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='timestamp5', full_name='live.ContinuationEntity.timestamp5', index=12,
-      number=20, type=3, cpp_type=2, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=211,
-  serialized_end=477,
-)
-
-
-_CONTINUATION = _descriptor.Descriptor(
-  name='Continuation',
-  full_name='live.Continuation',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='entity', full_name='live.Continuation.entity', index=0,
-      number=119693434, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=479,
-  serialized_end=538,
-)
-
-_CONTINUATIONENTITY.fields_by_name['body'].message_type = _BODY
-_CONTINUATIONENTITY.fields_by_name['chattype'].message_type = _CHATTYPE
-_CONTINUATIONENTITY.fields_by_name['str19'].message_type = _STR19
-_CONTINUATION.fields_by_name['entity'].message_type = _CONTINUATIONENTITY
-DESCRIPTOR.message_types_by_name['Body'] = _BODY
-DESCRIPTOR.message_types_by_name['ChatType'] = _CHATTYPE
-DESCRIPTOR.message_types_by_name['STR19'] = _STR19
-DESCRIPTOR.message_types_by_name['ContinuationEntity'] = _CONTINUATIONENTITY
-DESCRIPTOR.message_types_by_name['Continuation'] = _CONTINUATION
-_sym_db.RegisterFileDescriptor(DESCRIPTOR)
-
-Body = _reflection.GeneratedProtocolMessageType('Body', (_message.Message,), {
-  'DESCRIPTOR' : _BODY,
-  '__module__' : 'live_pb2'
-  # @@protoc_insertion_point(class_scope:live.Body)
-  })
-_sym_db.RegisterMessage(Body)
-
-ChatType = _reflection.GeneratedProtocolMessageType('ChatType', (_message.Message,), {
-  'DESCRIPTOR' : _CHATTYPE,
-  '__module__' : 'live_pb2'
-  # @@protoc_insertion_point(class_scope:live.ChatType)
-  })
-_sym_db.RegisterMessage(ChatType)
-
-STR19 = _reflection.GeneratedProtocolMessageType('STR19', (_message.Message,), {
-  'DESCRIPTOR' : _STR19,
-  '__module__' : 'live_pb2'
-  # @@protoc_insertion_point(class_scope:live.STR19)
-  })
-_sym_db.RegisterMessage(STR19)
-
-ContinuationEntity = _reflection.GeneratedProtocolMessageType('ContinuationEntity', (_message.Message,), {
-  'DESCRIPTOR' : _CONTINUATIONENTITY,
-  '__module__' : 'live_pb2'
-  # @@protoc_insertion_point(class_scope:live.ContinuationEntity)
-  })
-_sym_db.RegisterMessage(ContinuationEntity)
-
-Continuation = _reflection.GeneratedProtocolMessageType('Continuation', (_message.Message,), {
-  'DESCRIPTOR' : _CONTINUATION,
-  '__module__' : 'live_pb2'
-  # @@protoc_insertion_point(class_scope:live.Continuation)
-  })
-_sym_db.RegisterMessage(Continuation)
-
-
-# @@protoc_insertion_point(module_scope)
diff --git a/pytchat/paramgen/pb/replay_pb2.py b/pytchat/paramgen/pb/replay_pb2.py
deleted file mode 100644
index 4a85aa3..0000000
--- a/pytchat/paramgen/pb/replay_pb2.py
+++ /dev/null
@@ -1,215 +0,0 @@
-# -*- coding: utf-8 -*-
-# Generated by the protocol buffer compiler.  DO NOT EDIT!
-# source: replay.proto
-
-from google.protobuf import descriptor as _descriptor
-from google.protobuf import message as _message
-from google.protobuf import reflection as _reflection
-from google.protobuf import symbol_database as _symbol_database
-# @@protoc_insertion_point(imports)
-
-_sym_db = _symbol_database.Default()
-
-
-
-
-DESCRIPTOR = _descriptor.FileDescriptor(
-  name='replay.proto',
-  package='replay',
-  syntax='proto3',
-  serialized_options=None,
-  create_key=_descriptor._internal_create_key,
-  serialized_pb=b'\n\x0creplay.proto\x12\x06replay\"\x19\n\x08\x43hatType\x12\r\n\x05value\x18\x01 \x01(\x05\"\xb2\x01\n\x12\x43ontinuationEntity\x12\x0e\n\x06header\x18\x03 \x01(\t\x12\x11\n\ttimestamp\x18\x05 \x01(\x03\x12\n\n\x02s6\x18\x06 \x01(\x05\x12\n\n\x02s7\x18\x07 \x01(\x05\x12\n\n\x02s8\x18\x08 \x01(\x05\x12\n\n\x02s9\x18\t \x01(\x05\x12\x0b\n\x03s10\x18\n \x01(\t\x12\x0b\n\x03s12\x18\x0c \x01(\x05\x12\"\n\x08\x63hattype\x18\x0e \x01(\x0b\x32\x10.replay.ChatType\x12\x0b\n\x03s15\x18\x0f \x01(\x05\"=\n\x0c\x43ontinuation\x12-\n\x06\x65ntity\x18\xd4\x83\xb6J \x01(\x0b\x32\x1a.replay.ContinuationEntityb\x06proto3'
-)
-
-
-
-
-_CHATTYPE = _descriptor.Descriptor(
-  name='ChatType',
-  full_name='replay.ChatType',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='value', full_name='replay.ChatType.value', index=0,
-      number=1, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=24,
-  serialized_end=49,
-)
-
-
-_CONTINUATIONENTITY = _descriptor.Descriptor(
-  name='ContinuationEntity',
-  full_name='replay.ContinuationEntity',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='header', full_name='replay.ContinuationEntity.header', index=0,
-      number=3, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='timestamp', full_name='replay.ContinuationEntity.timestamp', index=1,
-      number=5, type=3, cpp_type=2, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s6', full_name='replay.ContinuationEntity.s6', index=2,
-      number=6, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s7', full_name='replay.ContinuationEntity.s7', index=3,
-      number=7, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s8', full_name='replay.ContinuationEntity.s8', index=4,
-      number=8, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s9', full_name='replay.ContinuationEntity.s9', index=5,
-      number=9, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s10', full_name='replay.ContinuationEntity.s10', index=6,
-      number=10, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s12', full_name='replay.ContinuationEntity.s12', index=7,
-      number=12, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='chattype', full_name='replay.ContinuationEntity.chattype', index=8,
-      number=14, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='s15', full_name='replay.ContinuationEntity.s15', index=9,
-      number=15, type=5, cpp_type=1, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=52,
-  serialized_end=230,
-)
-
-
-_CONTINUATION = _descriptor.Descriptor(
-  name='Continuation',
-  full_name='replay.Continuation',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='entity', full_name='replay.Continuation.entity', index=0,
-      number=156074452, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=232,
-  serialized_end=293,
-)
-
-_CONTINUATIONENTITY.fields_by_name['chattype'].message_type = _CHATTYPE
-_CONTINUATION.fields_by_name['entity'].message_type = _CONTINUATIONENTITY
-DESCRIPTOR.message_types_by_name['ChatType'] = _CHATTYPE
-DESCRIPTOR.message_types_by_name['ContinuationEntity'] = _CONTINUATIONENTITY
-DESCRIPTOR.message_types_by_name['Continuation'] = _CONTINUATION
-_sym_db.RegisterFileDescriptor(DESCRIPTOR)
-
-ChatType = _reflection.GeneratedProtocolMessageType('ChatType', (_message.Message,), {
-  'DESCRIPTOR' : _CHATTYPE,
-  '__module__' : 'replay_pb2'
-  # @@protoc_insertion_point(class_scope:replay.ChatType)
-  })
-_sym_db.RegisterMessage(ChatType)
-
-ContinuationEntity = _reflection.GeneratedProtocolMessageType('ContinuationEntity', (_message.Message,), {
-  'DESCRIPTOR' : _CONTINUATIONENTITY,
-  '__module__' : 'replay_pb2'
-  # @@protoc_insertion_point(class_scope:replay.ContinuationEntity)
-  })
-_sym_db.RegisterMessage(ContinuationEntity)
-
-Continuation = _reflection.GeneratedProtocolMessageType('Continuation', (_message.Message,), {
-  'DESCRIPTOR' : _CONTINUATION,
-  '__module__' : 'replay_pb2'
-  # @@protoc_insertion_point(class_scope:replay.Continuation)
-  })
-_sym_db.RegisterMessage(Continuation)
-
-
-# @@protoc_insertion_point(module_scope)
diff --git a/pytchat/paramgen/proto/header.proto b/pytchat/paramgen/proto/header.proto
deleted file mode 100644
index 54c6176..0000000
--- a/pytchat/paramgen/proto/header.proto
+++ /dev/null
@@ -1,14 +0,0 @@
-syntax = "proto3";
-
-message Video {
-    string id = 1;
-}
-
-message HeaderInfo {
-    Video video = 1;
-}
-
-message Header {
-    HeaderInfo info = 1;
-    int32 terminator = 4;
-}
diff --git a/pytchat/paramgen/proto/live.proto b/pytchat/paramgen/proto/live.proto
deleted file mode 100644
index 783753c..0000000
--- a/pytchat/paramgen/proto/live.proto
+++ /dev/null
@@ -1,45 +0,0 @@
-syntax = "proto3";
-
-package live;
-
-message Body {
-    int32 b1 = 1;
-    int32 b2 = 2;
-    int32 b3 = 3;
-    int32 b4 = 4;
-    string b7 = 7;
-    int32 b8 = 8;
-    string b9 = 9;
-    int64 timestamp2 = 10;
-    int32 b11 = 11;
-    int32 b15 = 15;
-}
-
-message ChatType {
-    int32 value = 1;
-}
-
-message STR19 {
-    int32 value = 1;
-}
-
-message ContinuationEntity {
-    string header = 3;
-    int64 timestamp1 = 5;
-    int32 s6 = 6;
-    int32 s7 = 7;
-    int32 s8 = 8;
-    Body body = 9;
-    int64 timestamp3 = 10;
-    int64 timestamp4 = 11;
-    int32 s13 = 13;
-    ChatType chattype = 16;
-    int32 s17 = 17;
-    STR19 str19 = 19;
-    int64 timestamp5 = 20;
-}
-
-message Continuation {
-    ContinuationEntity entity = 119693434;
-}
-
diff --git a/pytchat/paramgen/proto/replay.proto b/pytchat/paramgen/proto/replay.proto
deleted file mode 100644
index b86a21c..0000000
--- a/pytchat/paramgen/proto/replay.proto
+++ /dev/null
@@ -1,24 +0,0 @@
-syntax = "proto3";
-
-package replay;
-
-message ChatType {
-    int32 value = 1;
-}
-
-message ContinuationEntity {
-    string header = 3;
-    int64 timestamp = 5;
-    int32 s6 = 6;
-    int32 s7 = 7;
-    int32 s8 = 8;
-    int32 s9 = 9;
-    string s10 = 10;
-    int32 s12 = 12;
-    ChatType chattype = 14;
-    int32 s15 = 15;
-}
-
-message Continuation {
-    ContinuationEntity entity = 156074452;
-}  
diff --git a/pytchat/util/extract_video_id.py b/pytchat/util/extract_video_id.py
deleted file mode 100644
index 2f02ab0..0000000
--- a/pytchat/util/extract_video_id.py
+++ /dev/null
@@ -1,28 +0,0 @@
-import re
-from .. exceptions import InvalidVideoIdException
-
-
-PATTERN = re.compile(r"((?<=(v|V)/)|(?<=be/)|(?<=(\?|\&)v=)|(?<=embed/))([\w-]+)")
-YT_VIDEO_ID_LENGTH = 11
-
-
-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, 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