X-Git-Url: https://git.rapsys.eu/.gitweb.cgi/youtubedl/blobdiff_plain/453698570f26bebd37b39df8537d993b57d77b8b..948e7e72e8c48fac09cc92b37abe001b421fda48:/youtube_dl/utils.py
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 7832ed8..112279e 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -1,58 +1,1675 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
+# coding: utf-8
 
 from __future__ import unicode_literals
 
+import base64
+import binascii
 import calendar
 import codecs
+import collections
 import contextlib
 import ctypes
 import datetime
 import email.utils
+import email.header
 import errno
 import functools
 import gzip
-import itertools
 import io
+import itertools
 import json
 import locale
 import math
+import operator
 import os
-import pipes
 import platform
+import random
 import re
-import ssl
 import socket
-import struct
+import ssl
 import subprocess
 import sys
 import tempfile
+import time
 import traceback
 import xml.etree.ElementTree
 import zlib
 
 from .compat import (
+    compat_HTMLParseError,
+    compat_HTMLParser,
+    compat_basestring,
     compat_chr,
-    compat_getenv,
+    compat_cookiejar,
+    compat_ctypes_WINFUNCTYPE,
+    compat_etree_fromstring,
+    compat_expanduser,
     compat_html_entities,
+    compat_html_entities_html5,
     compat_http_client,
+    compat_integer_types,
+    compat_kwargs,
+    compat_os_name,
     compat_parse_qs,
-    compat_socket_create_connection,
+    compat_shlex_quote,
     compat_str,
+    compat_struct_pack,
+    compat_struct_unpack,
     compat_urllib_error,
     compat_urllib_parse,
+    compat_urllib_parse_urlencode,
     compat_urllib_parse_urlparse,
+    compat_urllib_parse_unquote_plus,
     compat_urllib_request,
     compat_urlparse,
-    shlex_quote,
+    compat_xpath,
 )
 
+from .socks import (
+    ProxyType,
+    sockssocket,
+)
+
+
+def register_socks_protocols():
+    # "Register" SOCKS protocols
+    # In Python < 2.6.5, urlsplit() suffers from bug https://bugs.python.org/issue7904
+    # URLs with protocols not in urlparse.uses_netloc are not handled correctly
+    for scheme in ('socks', 'socks4', 'socks4a', 'socks5'):
+        if scheme not in compat_urlparse.uses_netloc:
+            compat_urlparse.uses_netloc.append(scheme)
+
 
 # This is not clearly defined otherwise
 compiled_regex_type = type(re.compile(''))
 
+
+def random_user_agent():
+    _USER_AGENT_TPL = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/%s Safari/537.36'
+    _CHROME_VERSIONS = (
+        '74.0.3729.129',
+        '76.0.3780.3',
+        '76.0.3780.2',
+        '74.0.3729.128',
+        '76.0.3780.1',
+        '76.0.3780.0',
+        '75.0.3770.15',
+        '74.0.3729.127',
+        '74.0.3729.126',
+        '76.0.3779.1',
+        '76.0.3779.0',
+        '75.0.3770.14',
+        '74.0.3729.125',
+        '76.0.3778.1',
+        '76.0.3778.0',
+        '75.0.3770.13',
+        '74.0.3729.124',
+        '74.0.3729.123',
+        '73.0.3683.121',
+        '76.0.3777.1',
+        '76.0.3777.0',
+        '75.0.3770.12',
+        '74.0.3729.122',
+        '76.0.3776.4',
+        '75.0.3770.11',
+        '74.0.3729.121',
+        '76.0.3776.3',
+        '76.0.3776.2',
+        '73.0.3683.120',
+        '74.0.3729.120',
+        '74.0.3729.119',
+        '74.0.3729.118',
+        '76.0.3776.1',
+        '76.0.3776.0',
+        '76.0.3775.5',
+        '75.0.3770.10',
+        '74.0.3729.117',
+        '76.0.3775.4',
+        '76.0.3775.3',
+        '74.0.3729.116',
+        '75.0.3770.9',
+        '76.0.3775.2',
+        '76.0.3775.1',
+        '76.0.3775.0',
+        '75.0.3770.8',
+        '74.0.3729.115',
+        '74.0.3729.114',
+        '76.0.3774.1',
+        '76.0.3774.0',
+        '75.0.3770.7',
+        '74.0.3729.113',
+        '74.0.3729.112',
+        '74.0.3729.111',
+        '76.0.3773.1',
+        '76.0.3773.0',
+        '75.0.3770.6',
+        '74.0.3729.110',
+        '74.0.3729.109',
+        '76.0.3772.1',
+        '76.0.3772.0',
+        '75.0.3770.5',
+        '74.0.3729.108',
+        '74.0.3729.107',
+        '76.0.3771.1',
+        '76.0.3771.0',
+        '75.0.3770.4',
+        '74.0.3729.106',
+        '74.0.3729.105',
+        '75.0.3770.3',
+        '74.0.3729.104',
+        '74.0.3729.103',
+        '74.0.3729.102',
+        '75.0.3770.2',
+        '74.0.3729.101',
+        '75.0.3770.1',
+        '75.0.3770.0',
+        '74.0.3729.100',
+        '75.0.3769.5',
+        '75.0.3769.4',
+        '74.0.3729.99',
+        '75.0.3769.3',
+        '75.0.3769.2',
+        '75.0.3768.6',
+        '74.0.3729.98',
+        '75.0.3769.1',
+        '75.0.3769.0',
+        '74.0.3729.97',
+        '73.0.3683.119',
+        '73.0.3683.118',
+        '74.0.3729.96',
+        '75.0.3768.5',
+        '75.0.3768.4',
+        '75.0.3768.3',
+        '75.0.3768.2',
+        '74.0.3729.95',
+        '74.0.3729.94',
+        '75.0.3768.1',
+        '75.0.3768.0',
+        '74.0.3729.93',
+        '74.0.3729.92',
+        '73.0.3683.117',
+        '74.0.3729.91',
+        '75.0.3766.3',
+        '74.0.3729.90',
+        '75.0.3767.2',
+        '75.0.3767.1',
+        '75.0.3767.0',
+        '74.0.3729.89',
+        '73.0.3683.116',
+        '75.0.3766.2',
+        '74.0.3729.88',
+        '75.0.3766.1',
+        '75.0.3766.0',
+        '74.0.3729.87',
+        '73.0.3683.115',
+        '74.0.3729.86',
+        '75.0.3765.1',
+        '75.0.3765.0',
+        '74.0.3729.85',
+        '73.0.3683.114',
+        '74.0.3729.84',
+        '75.0.3764.1',
+        '75.0.3764.0',
+        '74.0.3729.83',
+        '73.0.3683.113',
+        '75.0.3763.2',
+        '75.0.3761.4',
+        '74.0.3729.82',
+        '75.0.3763.1',
+        '75.0.3763.0',
+        '74.0.3729.81',
+        '73.0.3683.112',
+        '75.0.3762.1',
+        '75.0.3762.0',
+        '74.0.3729.80',
+        '75.0.3761.3',
+        '74.0.3729.79',
+        '73.0.3683.111',
+        '75.0.3761.2',
+        '74.0.3729.78',
+        '74.0.3729.77',
+        '75.0.3761.1',
+        '75.0.3761.0',
+        '73.0.3683.110',
+        '74.0.3729.76',
+        '74.0.3729.75',
+        '75.0.3760.0',
+        '74.0.3729.74',
+        '75.0.3759.8',
+        '75.0.3759.7',
+        '75.0.3759.6',
+        '74.0.3729.73',
+        '75.0.3759.5',
+        '74.0.3729.72',
+        '73.0.3683.109',
+        '75.0.3759.4',
+        '75.0.3759.3',
+        '74.0.3729.71',
+        '75.0.3759.2',
+        '74.0.3729.70',
+        '73.0.3683.108',
+        '74.0.3729.69',
+        '75.0.3759.1',
+        '75.0.3759.0',
+        '74.0.3729.68',
+        '73.0.3683.107',
+        '74.0.3729.67',
+        '75.0.3758.1',
+        '75.0.3758.0',
+        '74.0.3729.66',
+        '73.0.3683.106',
+        '74.0.3729.65',
+        '75.0.3757.1',
+        '75.0.3757.0',
+        '74.0.3729.64',
+        '73.0.3683.105',
+        '74.0.3729.63',
+        '75.0.3756.1',
+        '75.0.3756.0',
+        '74.0.3729.62',
+        '73.0.3683.104',
+        '75.0.3755.3',
+        '75.0.3755.2',
+        '73.0.3683.103',
+        '75.0.3755.1',
+        '75.0.3755.0',
+        '74.0.3729.61',
+        '73.0.3683.102',
+        '74.0.3729.60',
+        '75.0.3754.2',
+        '74.0.3729.59',
+        '75.0.3753.4',
+        '74.0.3729.58',
+        '75.0.3754.1',
+        '75.0.3754.0',
+        '74.0.3729.57',
+        '73.0.3683.101',
+        '75.0.3753.3',
+        '75.0.3752.2',
+        '75.0.3753.2',
+        '74.0.3729.56',
+        '75.0.3753.1',
+        '75.0.3753.0',
+        '74.0.3729.55',
+        '73.0.3683.100',
+        '74.0.3729.54',
+        '75.0.3752.1',
+        '75.0.3752.0',
+        '74.0.3729.53',
+        '73.0.3683.99',
+        '74.0.3729.52',
+        '75.0.3751.1',
+        '75.0.3751.0',
+        '74.0.3729.51',
+        '73.0.3683.98',
+        '74.0.3729.50',
+        '75.0.3750.0',
+        '74.0.3729.49',
+        '74.0.3729.48',
+        '74.0.3729.47',
+        '75.0.3749.3',
+        '74.0.3729.46',
+        '73.0.3683.97',
+        '75.0.3749.2',
+        '74.0.3729.45',
+        '75.0.3749.1',
+        '75.0.3749.0',
+        '74.0.3729.44',
+        '73.0.3683.96',
+        '74.0.3729.43',
+        '74.0.3729.42',
+        '75.0.3748.1',
+        '75.0.3748.0',
+        '74.0.3729.41',
+        '75.0.3747.1',
+        '73.0.3683.95',
+        '75.0.3746.4',
+        '74.0.3729.40',
+        '74.0.3729.39',
+        '75.0.3747.0',
+        '75.0.3746.3',
+        '75.0.3746.2',
+        '74.0.3729.38',
+        '75.0.3746.1',
+        '75.0.3746.0',
+        '74.0.3729.37',
+        '73.0.3683.94',
+        '75.0.3745.5',
+        '75.0.3745.4',
+        '75.0.3745.3',
+        '75.0.3745.2',
+        '74.0.3729.36',
+        '75.0.3745.1',
+        '75.0.3745.0',
+        '75.0.3744.2',
+        '74.0.3729.35',
+        '73.0.3683.93',
+        '74.0.3729.34',
+        '75.0.3744.1',
+        '75.0.3744.0',
+        '74.0.3729.33',
+        '73.0.3683.92',
+        '74.0.3729.32',
+        '74.0.3729.31',
+        '73.0.3683.91',
+        '75.0.3741.2',
+        '75.0.3740.5',
+        '74.0.3729.30',
+        '75.0.3741.1',
+        '75.0.3741.0',
+        '74.0.3729.29',
+        '75.0.3740.4',
+        '73.0.3683.90',
+        '74.0.3729.28',
+        '75.0.3740.3',
+        '73.0.3683.89',
+        '75.0.3740.2',
+        '74.0.3729.27',
+        '75.0.3740.1',
+        '75.0.3740.0',
+        '74.0.3729.26',
+        '73.0.3683.88',
+        '73.0.3683.87',
+        '74.0.3729.25',
+        '75.0.3739.1',
+        '75.0.3739.0',
+        '73.0.3683.86',
+        '74.0.3729.24',
+        '73.0.3683.85',
+        '75.0.3738.4',
+        '75.0.3738.3',
+        '75.0.3738.2',
+        '75.0.3738.1',
+        '75.0.3738.0',
+        '74.0.3729.23',
+        '73.0.3683.84',
+        '74.0.3729.22',
+        '74.0.3729.21',
+        '75.0.3737.1',
+        '75.0.3737.0',
+        '74.0.3729.20',
+        '73.0.3683.83',
+        '74.0.3729.19',
+        '75.0.3736.1',
+        '75.0.3736.0',
+        '74.0.3729.18',
+        '73.0.3683.82',
+        '74.0.3729.17',
+        '75.0.3735.1',
+        '75.0.3735.0',
+        '74.0.3729.16',
+        '73.0.3683.81',
+        '75.0.3734.1',
+        '75.0.3734.0',
+        '74.0.3729.15',
+        '73.0.3683.80',
+        '74.0.3729.14',
+        '75.0.3733.1',
+        '75.0.3733.0',
+        '75.0.3732.1',
+        '74.0.3729.13',
+        '74.0.3729.12',
+        '73.0.3683.79',
+        '74.0.3729.11',
+        '75.0.3732.0',
+        '74.0.3729.10',
+        '73.0.3683.78',
+        '74.0.3729.9',
+        '74.0.3729.8',
+        '74.0.3729.7',
+        '75.0.3731.3',
+        '75.0.3731.2',
+        '75.0.3731.0',
+        '74.0.3729.6',
+        '73.0.3683.77',
+        '73.0.3683.76',
+        '75.0.3730.5',
+        '75.0.3730.4',
+        '73.0.3683.75',
+        '74.0.3729.5',
+        '73.0.3683.74',
+        '75.0.3730.3',
+        '75.0.3730.2',
+        '74.0.3729.4',
+        '73.0.3683.73',
+        '73.0.3683.72',
+        '75.0.3730.1',
+        '75.0.3730.0',
+        '74.0.3729.3',
+        '73.0.3683.71',
+        '74.0.3729.2',
+        '73.0.3683.70',
+        '74.0.3729.1',
+        '74.0.3729.0',
+        '74.0.3726.4',
+        '73.0.3683.69',
+        '74.0.3726.3',
+        '74.0.3728.0',
+        '74.0.3726.2',
+        '73.0.3683.68',
+        '74.0.3726.1',
+        '74.0.3726.0',
+        '74.0.3725.4',
+        '73.0.3683.67',
+        '73.0.3683.66',
+        '74.0.3725.3',
+        '74.0.3725.2',
+        '74.0.3725.1',
+        '74.0.3724.8',
+        '74.0.3725.0',
+        '73.0.3683.65',
+        '74.0.3724.7',
+        '74.0.3724.6',
+        '74.0.3724.5',
+        '74.0.3724.4',
+        '74.0.3724.3',
+        '74.0.3724.2',
+        '74.0.3724.1',
+        '74.0.3724.0',
+        '73.0.3683.64',
+        '74.0.3723.1',
+        '74.0.3723.0',
+        '73.0.3683.63',
+        '74.0.3722.1',
+        '74.0.3722.0',
+        '73.0.3683.62',
+        '74.0.3718.9',
+        '74.0.3702.3',
+        '74.0.3721.3',
+        '74.0.3721.2',
+        '74.0.3721.1',
+        '74.0.3721.0',
+        '74.0.3720.6',
+        '73.0.3683.61',
+        '72.0.3626.122',
+        '73.0.3683.60',
+        '74.0.3720.5',
+        '72.0.3626.121',
+        '74.0.3718.8',
+        '74.0.3720.4',
+        '74.0.3720.3',
+        '74.0.3718.7',
+        '74.0.3720.2',
+        '74.0.3720.1',
+        '74.0.3720.0',
+        '74.0.3718.6',
+        '74.0.3719.5',
+        '73.0.3683.59',
+        '74.0.3718.5',
+        '74.0.3718.4',
+        '74.0.3719.4',
+        '74.0.3719.3',
+        '74.0.3719.2',
+        '74.0.3719.1',
+        '73.0.3683.58',
+        '74.0.3719.0',
+        '73.0.3683.57',
+        '73.0.3683.56',
+        '74.0.3718.3',
+        '73.0.3683.55',
+        '74.0.3718.2',
+        '74.0.3718.1',
+        '74.0.3718.0',
+        '73.0.3683.54',
+        '74.0.3717.2',
+        '73.0.3683.53',
+        '74.0.3717.1',
+        '74.0.3717.0',
+        '73.0.3683.52',
+        '74.0.3716.1',
+        '74.0.3716.0',
+        '73.0.3683.51',
+        '74.0.3715.1',
+        '74.0.3715.0',
+        '73.0.3683.50',
+        '74.0.3711.2',
+        '74.0.3714.2',
+        '74.0.3713.3',
+        '74.0.3714.1',
+        '74.0.3714.0',
+        '73.0.3683.49',
+        '74.0.3713.1',
+        '74.0.3713.0',
+        '72.0.3626.120',
+        '73.0.3683.48',
+        '74.0.3712.2',
+        '74.0.3712.1',
+        '74.0.3712.0',
+        '73.0.3683.47',
+        '72.0.3626.119',
+        '73.0.3683.46',
+        '74.0.3710.2',
+        '72.0.3626.118',
+        '74.0.3711.1',
+        '74.0.3711.0',
+        '73.0.3683.45',
+        '72.0.3626.117',
+        '74.0.3710.1',
+        '74.0.3710.0',
+        '73.0.3683.44',
+        '72.0.3626.116',
+        '74.0.3709.1',
+        '74.0.3709.0',
+        '74.0.3704.9',
+        '73.0.3683.43',
+        '72.0.3626.115',
+        '74.0.3704.8',
+        '74.0.3704.7',
+        '74.0.3708.0',
+        '74.0.3706.7',
+        '74.0.3704.6',
+        '73.0.3683.42',
+        '72.0.3626.114',
+        '74.0.3706.6',
+        '72.0.3626.113',
+        '74.0.3704.5',
+        '74.0.3706.5',
+        '74.0.3706.4',
+        '74.0.3706.3',
+        '74.0.3706.2',
+        '74.0.3706.1',
+        '74.0.3706.0',
+        '73.0.3683.41',
+        '72.0.3626.112',
+        '74.0.3705.1',
+        '74.0.3705.0',
+        '73.0.3683.40',
+        '72.0.3626.111',
+        '73.0.3683.39',
+        '74.0.3704.4',
+        '73.0.3683.38',
+        '74.0.3704.3',
+        '74.0.3704.2',
+        '74.0.3704.1',
+        '74.0.3704.0',
+        '73.0.3683.37',
+        '72.0.3626.110',
+        '72.0.3626.109',
+        '74.0.3703.3',
+        '74.0.3703.2',
+        '73.0.3683.36',
+        '74.0.3703.1',
+        '74.0.3703.0',
+        '73.0.3683.35',
+        '72.0.3626.108',
+        '74.0.3702.2',
+        '74.0.3699.3',
+        '74.0.3702.1',
+        '74.0.3702.0',
+        '73.0.3683.34',
+        '72.0.3626.107',
+        '73.0.3683.33',
+        '74.0.3701.1',
+        '74.0.3701.0',
+        '73.0.3683.32',
+        '73.0.3683.31',
+        '72.0.3626.105',
+        '74.0.3700.1',
+        '74.0.3700.0',
+        '73.0.3683.29',
+        '72.0.3626.103',
+        '74.0.3699.2',
+        '74.0.3699.1',
+        '74.0.3699.0',
+        '73.0.3683.28',
+        '72.0.3626.102',
+        '73.0.3683.27',
+        '73.0.3683.26',
+        '74.0.3698.0',
+        '74.0.3696.2',
+        '72.0.3626.101',
+        '73.0.3683.25',
+        '74.0.3696.1',
+        '74.0.3696.0',
+        '74.0.3694.8',
+        '72.0.3626.100',
+        '74.0.3694.7',
+        '74.0.3694.6',
+        '74.0.3694.5',
+        '74.0.3694.4',
+        '72.0.3626.99',
+        '72.0.3626.98',
+        '74.0.3694.3',
+        '73.0.3683.24',
+        '72.0.3626.97',
+        '72.0.3626.96',
+        '72.0.3626.95',
+        '73.0.3683.23',
+        '72.0.3626.94',
+        '73.0.3683.22',
+        '73.0.3683.21',
+        '72.0.3626.93',
+        '74.0.3694.2',
+        '72.0.3626.92',
+        '74.0.3694.1',
+        '74.0.3694.0',
+        '74.0.3693.6',
+        '73.0.3683.20',
+        '72.0.3626.91',
+        '74.0.3693.5',
+        '74.0.3693.4',
+        '74.0.3693.3',
+        '74.0.3693.2',
+        '73.0.3683.19',
+        '74.0.3693.1',
+        '74.0.3693.0',
+        '73.0.3683.18',
+        '72.0.3626.90',
+        '74.0.3692.1',
+        '74.0.3692.0',
+        '73.0.3683.17',
+        '72.0.3626.89',
+        '74.0.3687.3',
+        '74.0.3691.1',
+        '74.0.3691.0',
+        '73.0.3683.16',
+        '72.0.3626.88',
+        '72.0.3626.87',
+        '73.0.3683.15',
+        '74.0.3690.1',
+        '74.0.3690.0',
+        '73.0.3683.14',
+        '72.0.3626.86',
+        '73.0.3683.13',
+        '73.0.3683.12',
+        '74.0.3689.1',
+        '74.0.3689.0',
+        '73.0.3683.11',
+        '72.0.3626.85',
+        '73.0.3683.10',
+        '72.0.3626.84',
+        '73.0.3683.9',
+        '74.0.3688.1',
+        '74.0.3688.0',
+        '73.0.3683.8',
+        '72.0.3626.83',
+        '74.0.3687.2',
+        '74.0.3687.1',
+        '74.0.3687.0',
+        '73.0.3683.7',
+        '72.0.3626.82',
+        '74.0.3686.4',
+        '72.0.3626.81',
+        '74.0.3686.3',
+        '74.0.3686.2',
+        '74.0.3686.1',
+        '74.0.3686.0',
+        '73.0.3683.6',
+        '72.0.3626.80',
+        '74.0.3685.1',
+        '74.0.3685.0',
+        '73.0.3683.5',
+        '72.0.3626.79',
+        '74.0.3684.1',
+        '74.0.3684.0',
+        '73.0.3683.4',
+        '72.0.3626.78',
+        '72.0.3626.77',
+        '73.0.3683.3',
+        '73.0.3683.2',
+        '72.0.3626.76',
+        '73.0.3683.1',
+        '73.0.3683.0',
+        '72.0.3626.75',
+        '71.0.3578.141',
+        '73.0.3682.1',
+        '73.0.3682.0',
+        '72.0.3626.74',
+        '71.0.3578.140',
+        '73.0.3681.4',
+        '73.0.3681.3',
+        '73.0.3681.2',
+        '73.0.3681.1',
+        '73.0.3681.0',
+        '72.0.3626.73',
+        '71.0.3578.139',
+        '72.0.3626.72',
+        '72.0.3626.71',
+        '73.0.3680.1',
+        '73.0.3680.0',
+        '72.0.3626.70',
+        '71.0.3578.138',
+        '73.0.3678.2',
+        '73.0.3679.1',
+        '73.0.3679.0',
+        '72.0.3626.69',
+        '71.0.3578.137',
+        '73.0.3678.1',
+        '73.0.3678.0',
+        '71.0.3578.136',
+        '73.0.3677.1',
+        '73.0.3677.0',
+        '72.0.3626.68',
+        '72.0.3626.67',
+        '71.0.3578.135',
+        '73.0.3676.1',
+        '73.0.3676.0',
+        '73.0.3674.2',
+        '72.0.3626.66',
+        '71.0.3578.134',
+        '73.0.3674.1',
+        '73.0.3674.0',
+        '72.0.3626.65',
+        '71.0.3578.133',
+        '73.0.3673.2',
+        '73.0.3673.1',
+        '73.0.3673.0',
+        '72.0.3626.64',
+        '71.0.3578.132',
+        '72.0.3626.63',
+        '72.0.3626.62',
+        '72.0.3626.61',
+        '72.0.3626.60',
+        '73.0.3672.1',
+        '73.0.3672.0',
+        '72.0.3626.59',
+        '71.0.3578.131',
+        '73.0.3671.3',
+        '73.0.3671.2',
+        '73.0.3671.1',
+        '73.0.3671.0',
+        '72.0.3626.58',
+        '71.0.3578.130',
+        '73.0.3670.1',
+        '73.0.3670.0',
+        '72.0.3626.57',
+        '71.0.3578.129',
+        '73.0.3669.1',
+        '73.0.3669.0',
+        '72.0.3626.56',
+        '71.0.3578.128',
+        '73.0.3668.2',
+        '73.0.3668.1',
+        '73.0.3668.0',
+        '72.0.3626.55',
+        '71.0.3578.127',
+        '73.0.3667.2',
+        '73.0.3667.1',
+        '73.0.3667.0',
+        '72.0.3626.54',
+        '71.0.3578.126',
+        '73.0.3666.1',
+        '73.0.3666.0',
+        '72.0.3626.53',
+        '71.0.3578.125',
+        '73.0.3665.4',
+        '73.0.3665.3',
+        '72.0.3626.52',
+        '73.0.3665.2',
+        '73.0.3664.4',
+        '73.0.3665.1',
+        '73.0.3665.0',
+        '72.0.3626.51',
+        '71.0.3578.124',
+        '72.0.3626.50',
+        '73.0.3664.3',
+        '73.0.3664.2',
+        '73.0.3664.1',
+        '73.0.3664.0',
+        '73.0.3663.2',
+        '72.0.3626.49',
+        '71.0.3578.123',
+        '73.0.3663.1',
+        '73.0.3663.0',
+        '72.0.3626.48',
+        '71.0.3578.122',
+        '73.0.3662.1',
+        '73.0.3662.0',
+        '72.0.3626.47',
+        '71.0.3578.121',
+        '73.0.3661.1',
+        '72.0.3626.46',
+        '73.0.3661.0',
+        '72.0.3626.45',
+        '71.0.3578.120',
+        '73.0.3660.2',
+        '73.0.3660.1',
+        '73.0.3660.0',
+        '72.0.3626.44',
+        '71.0.3578.119',
+        '73.0.3659.1',
+        '73.0.3659.0',
+        '72.0.3626.43',
+        '71.0.3578.118',
+        '73.0.3658.1',
+        '73.0.3658.0',
+        '72.0.3626.42',
+        '71.0.3578.117',
+        '73.0.3657.1',
+        '73.0.3657.0',
+        '72.0.3626.41',
+        '71.0.3578.116',
+        '73.0.3656.1',
+        '73.0.3656.0',
+        '72.0.3626.40',
+        '71.0.3578.115',
+        '73.0.3655.1',
+        '73.0.3655.0',
+        '72.0.3626.39',
+        '71.0.3578.114',
+        '73.0.3654.1',
+        '73.0.3654.0',
+        '72.0.3626.38',
+        '71.0.3578.113',
+        '73.0.3653.1',
+        '73.0.3653.0',
+        '72.0.3626.37',
+        '71.0.3578.112',
+        '73.0.3652.1',
+        '73.0.3652.0',
+        '72.0.3626.36',
+        '71.0.3578.111',
+        '73.0.3651.1',
+        '73.0.3651.0',
+        '72.0.3626.35',
+        '71.0.3578.110',
+        '73.0.3650.1',
+        '73.0.3650.0',
+        '72.0.3626.34',
+        '71.0.3578.109',
+        '73.0.3649.1',
+        '73.0.3649.0',
+        '72.0.3626.33',
+        '71.0.3578.108',
+        '73.0.3648.2',
+        '73.0.3648.1',
+        '73.0.3648.0',
+        '72.0.3626.32',
+        '71.0.3578.107',
+        '73.0.3647.2',
+        '73.0.3647.1',
+        '73.0.3647.0',
+        '72.0.3626.31',
+        '71.0.3578.106',
+        '73.0.3635.3',
+        '73.0.3646.2',
+        '73.0.3646.1',
+        '73.0.3646.0',
+        '72.0.3626.30',
+        '71.0.3578.105',
+        '72.0.3626.29',
+        '73.0.3645.2',
+        '73.0.3645.1',
+        '73.0.3645.0',
+        '72.0.3626.28',
+        '71.0.3578.104',
+        '72.0.3626.27',
+        '72.0.3626.26',
+        '72.0.3626.25',
+        '72.0.3626.24',
+        '73.0.3644.0',
+        '73.0.3643.2',
+        '72.0.3626.23',
+        '71.0.3578.103',
+        '73.0.3643.1',
+        '73.0.3643.0',
+        '72.0.3626.22',
+        '71.0.3578.102',
+        '73.0.3642.1',
+        '73.0.3642.0',
+        '72.0.3626.21',
+        '71.0.3578.101',
+        '73.0.3641.1',
+        '73.0.3641.0',
+        '72.0.3626.20',
+        '71.0.3578.100',
+        '72.0.3626.19',
+        '73.0.3640.1',
+        '73.0.3640.0',
+        '72.0.3626.18',
+        '73.0.3639.1',
+        '71.0.3578.99',
+        '73.0.3639.0',
+        '72.0.3626.17',
+        '73.0.3638.2',
+        '72.0.3626.16',
+        '73.0.3638.1',
+        '73.0.3638.0',
+        '72.0.3626.15',
+        '71.0.3578.98',
+        '73.0.3635.2',
+        '71.0.3578.97',
+        '73.0.3637.1',
+        '73.0.3637.0',
+        '72.0.3626.14',
+        '71.0.3578.96',
+        '71.0.3578.95',
+        '72.0.3626.13',
+        '71.0.3578.94',
+        '73.0.3636.2',
+        '71.0.3578.93',
+        '73.0.3636.1',
+        '73.0.3636.0',
+        '72.0.3626.12',
+        '71.0.3578.92',
+        '73.0.3635.1',
+        '73.0.3635.0',
+        '72.0.3626.11',
+        '71.0.3578.91',
+        '73.0.3634.2',
+        '73.0.3634.1',
+        '73.0.3634.0',
+        '72.0.3626.10',
+        '71.0.3578.90',
+        '71.0.3578.89',
+        '73.0.3633.2',
+        '73.0.3633.1',
+        '73.0.3633.0',
+        '72.0.3610.4',
+        '72.0.3626.9',
+        '71.0.3578.88',
+        '73.0.3632.5',
+        '73.0.3632.4',
+        '73.0.3632.3',
+        '73.0.3632.2',
+        '73.0.3632.1',
+        '73.0.3632.0',
+        '72.0.3626.8',
+        '71.0.3578.87',
+        '73.0.3631.2',
+        '73.0.3631.1',
+        '73.0.3631.0',
+        '72.0.3626.7',
+        '71.0.3578.86',
+        '72.0.3626.6',
+        '73.0.3630.1',
+        '73.0.3630.0',
+        '72.0.3626.5',
+        '71.0.3578.85',
+        '72.0.3626.4',
+        '73.0.3628.3',
+        '73.0.3628.2',
+        '73.0.3629.1',
+        '73.0.3629.0',
+        '72.0.3626.3',
+        '71.0.3578.84',
+        '73.0.3628.1',
+        '73.0.3628.0',
+        '71.0.3578.83',
+        '73.0.3627.1',
+        '73.0.3627.0',
+        '72.0.3626.2',
+        '71.0.3578.82',
+        '71.0.3578.81',
+        '71.0.3578.80',
+        '72.0.3626.1',
+        '72.0.3626.0',
+        '71.0.3578.79',
+        '70.0.3538.124',
+        '71.0.3578.78',
+        '72.0.3623.4',
+        '72.0.3625.2',
+        '72.0.3625.1',
+        '72.0.3625.0',
+        '71.0.3578.77',
+        '70.0.3538.123',
+        '72.0.3624.4',
+        '72.0.3624.3',
+        '72.0.3624.2',
+        '71.0.3578.76',
+        '72.0.3624.1',
+        '72.0.3624.0',
+        '72.0.3623.3',
+        '71.0.3578.75',
+        '70.0.3538.122',
+        '71.0.3578.74',
+        '72.0.3623.2',
+        '72.0.3610.3',
+        '72.0.3623.1',
+        '72.0.3623.0',
+        '72.0.3622.3',
+        '72.0.3622.2',
+        '71.0.3578.73',
+        '70.0.3538.121',
+        '72.0.3622.1',
+        '72.0.3622.0',
+        '71.0.3578.72',
+        '70.0.3538.120',
+        '72.0.3621.1',
+        '72.0.3621.0',
+        '71.0.3578.71',
+        '70.0.3538.119',
+        '72.0.3620.1',
+        '72.0.3620.0',
+        '71.0.3578.70',
+        '70.0.3538.118',
+        '71.0.3578.69',
+        '72.0.3619.1',
+        '72.0.3619.0',
+        '71.0.3578.68',
+        '70.0.3538.117',
+        '71.0.3578.67',
+        '72.0.3618.1',
+        '72.0.3618.0',
+        '71.0.3578.66',
+        '70.0.3538.116',
+        '72.0.3617.1',
+        '72.0.3617.0',
+        '71.0.3578.65',
+        '70.0.3538.115',
+        '72.0.3602.3',
+        '71.0.3578.64',
+        '72.0.3616.1',
+        '72.0.3616.0',
+        '71.0.3578.63',
+        '70.0.3538.114',
+        '71.0.3578.62',
+        '72.0.3615.1',
+        '72.0.3615.0',
+        '71.0.3578.61',
+        '70.0.3538.113',
+        '72.0.3614.1',
+        '72.0.3614.0',
+        '71.0.3578.60',
+        '70.0.3538.112',
+        '72.0.3613.1',
+        '72.0.3613.0',
+        '71.0.3578.59',
+        '70.0.3538.111',
+        '72.0.3612.2',
+        '72.0.3612.1',
+        '72.0.3612.0',
+        '70.0.3538.110',
+        '71.0.3578.58',
+        '70.0.3538.109',
+        '72.0.3611.2',
+        '72.0.3611.1',
+        '72.0.3611.0',
+        '71.0.3578.57',
+        '70.0.3538.108',
+        '72.0.3610.2',
+        '71.0.3578.56',
+        '71.0.3578.55',
+        '72.0.3610.1',
+        '72.0.3610.0',
+        '71.0.3578.54',
+        '70.0.3538.107',
+        '71.0.3578.53',
+        '72.0.3609.3',
+        '71.0.3578.52',
+        '72.0.3609.2',
+        '71.0.3578.51',
+        '72.0.3608.5',
+        '72.0.3609.1',
+        '72.0.3609.0',
+        '71.0.3578.50',
+        '70.0.3538.106',
+        '72.0.3608.4',
+        '72.0.3608.3',
+        '72.0.3608.2',
+        '71.0.3578.49',
+        '72.0.3608.1',
+        '72.0.3608.0',
+        '70.0.3538.105',
+        '71.0.3578.48',
+        '72.0.3607.1',
+        '72.0.3607.0',
+        '71.0.3578.47',
+        '70.0.3538.104',
+        '72.0.3606.2',
+        '72.0.3606.1',
+        '72.0.3606.0',
+        '71.0.3578.46',
+        '70.0.3538.103',
+        '70.0.3538.102',
+        '72.0.3605.3',
+        '72.0.3605.2',
+        '72.0.3605.1',
+        '72.0.3605.0',
+        '71.0.3578.45',
+        '70.0.3538.101',
+        '71.0.3578.44',
+        '71.0.3578.43',
+        '70.0.3538.100',
+        '70.0.3538.99',
+        '71.0.3578.42',
+        '72.0.3604.1',
+        '72.0.3604.0',
+        '71.0.3578.41',
+        '70.0.3538.98',
+        '71.0.3578.40',
+        '72.0.3603.2',
+        '72.0.3603.1',
+        '72.0.3603.0',
+        '71.0.3578.39',
+        '70.0.3538.97',
+        '72.0.3602.2',
+        '71.0.3578.38',
+        '71.0.3578.37',
+        '72.0.3602.1',
+        '72.0.3602.0',
+        '71.0.3578.36',
+        '70.0.3538.96',
+        '72.0.3601.1',
+        '72.0.3601.0',
+        '71.0.3578.35',
+        '70.0.3538.95',
+        '72.0.3600.1',
+        '72.0.3600.0',
+        '71.0.3578.34',
+        '70.0.3538.94',
+        '72.0.3599.3',
+        '72.0.3599.2',
+        '72.0.3599.1',
+        '72.0.3599.0',
+        '71.0.3578.33',
+        '70.0.3538.93',
+        '72.0.3598.1',
+        '72.0.3598.0',
+        '71.0.3578.32',
+        '70.0.3538.87',
+        '72.0.3597.1',
+        '72.0.3597.0',
+        '72.0.3596.2',
+        '71.0.3578.31',
+        '70.0.3538.86',
+        '71.0.3578.30',
+        '71.0.3578.29',
+        '72.0.3596.1',
+        '72.0.3596.0',
+        '71.0.3578.28',
+        '70.0.3538.85',
+        '72.0.3595.2',
+        '72.0.3591.3',
+        '72.0.3595.1',
+        '72.0.3595.0',
+        '71.0.3578.27',
+        '70.0.3538.84',
+        '72.0.3594.1',
+        '72.0.3594.0',
+        '71.0.3578.26',
+        '70.0.3538.83',
+        '72.0.3593.2',
+        '72.0.3593.1',
+        '72.0.3593.0',
+        '71.0.3578.25',
+        '70.0.3538.82',
+        '72.0.3589.3',
+        '72.0.3592.2',
+        '72.0.3592.1',
+        '72.0.3592.0',
+        '71.0.3578.24',
+        '72.0.3589.2',
+        '70.0.3538.81',
+        '70.0.3538.80',
+        '72.0.3591.2',
+        '72.0.3591.1',
+        '72.0.3591.0',
+        '71.0.3578.23',
+        '70.0.3538.79',
+        '71.0.3578.22',
+        '72.0.3590.1',
+        '72.0.3590.0',
+        '71.0.3578.21',
+        '70.0.3538.78',
+        '70.0.3538.77',
+        '72.0.3589.1',
+        '72.0.3589.0',
+        '71.0.3578.20',
+        '70.0.3538.76',
+        '71.0.3578.19',
+        '70.0.3538.75',
+        '72.0.3588.1',
+        '72.0.3588.0',
+        '71.0.3578.18',
+        '70.0.3538.74',
+        '72.0.3586.2',
+        '72.0.3587.0',
+        '71.0.3578.17',
+        '70.0.3538.73',
+        '72.0.3586.1',
+        '72.0.3586.0',
+        '71.0.3578.16',
+        '70.0.3538.72',
+        '72.0.3585.1',
+        '72.0.3585.0',
+        '71.0.3578.15',
+        '70.0.3538.71',
+        '71.0.3578.14',
+        '72.0.3584.1',
+        '72.0.3584.0',
+        '71.0.3578.13',
+        '70.0.3538.70',
+        '72.0.3583.2',
+        '71.0.3578.12',
+        '72.0.3583.1',
+        '72.0.3583.0',
+        '71.0.3578.11',
+        '70.0.3538.69',
+        '71.0.3578.10',
+        '72.0.3582.0',
+        '72.0.3581.4',
+        '71.0.3578.9',
+        '70.0.3538.67',
+        '72.0.3581.3',
+        '72.0.3581.2',
+        '72.0.3581.1',
+        '72.0.3581.0',
+        '71.0.3578.8',
+        '70.0.3538.66',
+        '72.0.3580.1',
+        '72.0.3580.0',
+        '71.0.3578.7',
+        '70.0.3538.65',
+        '71.0.3578.6',
+        '72.0.3579.1',
+        '72.0.3579.0',
+        '71.0.3578.5',
+        '70.0.3538.64',
+        '71.0.3578.4',
+        '71.0.3578.3',
+        '71.0.3578.2',
+        '71.0.3578.1',
+        '71.0.3578.0',
+        '70.0.3538.63',
+        '69.0.3497.128',
+        '70.0.3538.62',
+        '70.0.3538.61',
+        '70.0.3538.60',
+        '70.0.3538.59',
+        '71.0.3577.1',
+        '71.0.3577.0',
+        '70.0.3538.58',
+        '69.0.3497.127',
+        '71.0.3576.2',
+        '71.0.3576.1',
+        '71.0.3576.0',
+        '70.0.3538.57',
+        '70.0.3538.56',
+        '71.0.3575.2',
+        '70.0.3538.55',
+        '69.0.3497.126',
+        '70.0.3538.54',
+        '71.0.3575.1',
+        '71.0.3575.0',
+        '71.0.3574.1',
+        '71.0.3574.0',
+        '70.0.3538.53',
+        '69.0.3497.125',
+        '70.0.3538.52',
+        '71.0.3573.1',
+        '71.0.3573.0',
+        '70.0.3538.51',
+        '69.0.3497.124',
+        '71.0.3572.1',
+        '71.0.3572.0',
+        '70.0.3538.50',
+        '69.0.3497.123',
+        '71.0.3571.2',
+        '70.0.3538.49',
+        '69.0.3497.122',
+        '71.0.3571.1',
+        '71.0.3571.0',
+        '70.0.3538.48',
+        '69.0.3497.121',
+        '71.0.3570.1',
+        '71.0.3570.0',
+        '70.0.3538.47',
+        '69.0.3497.120',
+        '71.0.3568.2',
+        '71.0.3569.1',
+        '71.0.3569.0',
+        '70.0.3538.46',
+        '69.0.3497.119',
+        '70.0.3538.45',
+        '71.0.3568.1',
+        '71.0.3568.0',
+        '70.0.3538.44',
+        '69.0.3497.118',
+        '70.0.3538.43',
+        '70.0.3538.42',
+        '71.0.3567.1',
+        '71.0.3567.0',
+        '70.0.3538.41',
+        '69.0.3497.117',
+        '71.0.3566.1',
+        '71.0.3566.0',
+        '70.0.3538.40',
+        '69.0.3497.116',
+        '71.0.3565.1',
+        '71.0.3565.0',
+        '70.0.3538.39',
+        '69.0.3497.115',
+        '71.0.3564.1',
+        '71.0.3564.0',
+        '70.0.3538.38',
+        '69.0.3497.114',
+        '71.0.3563.0',
+        '71.0.3562.2',
+        '70.0.3538.37',
+        '69.0.3497.113',
+        '70.0.3538.36',
+        '70.0.3538.35',
+        '71.0.3562.1',
+        '71.0.3562.0',
+        '70.0.3538.34',
+        '69.0.3497.112',
+        '70.0.3538.33',
+        '71.0.3561.1',
+        '71.0.3561.0',
+        '70.0.3538.32',
+        '69.0.3497.111',
+        '71.0.3559.6',
+        '71.0.3560.1',
+        '71.0.3560.0',
+        '71.0.3559.5',
+        '71.0.3559.4',
+        '70.0.3538.31',
+        '69.0.3497.110',
+        '71.0.3559.3',
+        '70.0.3538.30',
+        '69.0.3497.109',
+        '71.0.3559.2',
+        '71.0.3559.1',
+        '71.0.3559.0',
+        '70.0.3538.29',
+        '69.0.3497.108',
+        '71.0.3558.2',
+        '71.0.3558.1',
+        '71.0.3558.0',
+        '70.0.3538.28',
+        '69.0.3497.107',
+        '71.0.3557.2',
+        '71.0.3557.1',
+        '71.0.3557.0',
+        '70.0.3538.27',
+        '69.0.3497.106',
+        '71.0.3554.4',
+        '70.0.3538.26',
+        '71.0.3556.1',
+        '71.0.3556.0',
+        '70.0.3538.25',
+        '71.0.3554.3',
+        '69.0.3497.105',
+        '71.0.3554.2',
+        '70.0.3538.24',
+        '69.0.3497.104',
+        '71.0.3555.2',
+        '70.0.3538.23',
+        '71.0.3555.1',
+        '71.0.3555.0',
+        '70.0.3538.22',
+        '69.0.3497.103',
+        '71.0.3554.1',
+        '71.0.3554.0',
+        '70.0.3538.21',
+        '69.0.3497.102',
+        '71.0.3553.3',
+        '70.0.3538.20',
+        '69.0.3497.101',
+        '71.0.3553.2',
+        '69.0.3497.100',
+        '71.0.3553.1',
+        '71.0.3553.0',
+        '70.0.3538.19',
+        '69.0.3497.99',
+        '69.0.3497.98',
+        '69.0.3497.97',
+        '71.0.3552.6',
+        '71.0.3552.5',
+        '71.0.3552.4',
+        '71.0.3552.3',
+        '71.0.3552.2',
+        '71.0.3552.1',
+        '71.0.3552.0',
+        '70.0.3538.18',
+        '69.0.3497.96',
+        '71.0.3551.3',
+        '71.0.3551.2',
+        '71.0.3551.1',
+        '71.0.3551.0',
+        '70.0.3538.17',
+        '69.0.3497.95',
+        '71.0.3550.3',
+        '71.0.3550.2',
+        '71.0.3550.1',
+        '71.0.3550.0',
+        '70.0.3538.16',
+        '69.0.3497.94',
+        '71.0.3549.1',
+        '71.0.3549.0',
+        '70.0.3538.15',
+        '69.0.3497.93',
+        '69.0.3497.92',
+        '71.0.3548.1',
+        '71.0.3548.0',
+        '70.0.3538.14',
+        '69.0.3497.91',
+        '71.0.3547.1',
+        '71.0.3547.0',
+        '70.0.3538.13',
+        '69.0.3497.90',
+        '71.0.3546.2',
+        '69.0.3497.89',
+        '71.0.3546.1',
+        '71.0.3546.0',
+        '70.0.3538.12',
+        '69.0.3497.88',
+        '71.0.3545.4',
+        '71.0.3545.3',
+        '71.0.3545.2',
+        '71.0.3545.1',
+        '71.0.3545.0',
+        '70.0.3538.11',
+        '69.0.3497.87',
+        '71.0.3544.5',
+        '71.0.3544.4',
+        '71.0.3544.3',
+        '71.0.3544.2',
+        '71.0.3544.1',
+        '71.0.3544.0',
+        '69.0.3497.86',
+        '70.0.3538.10',
+        '69.0.3497.85',
+        '70.0.3538.9',
+        '69.0.3497.84',
+        '71.0.3543.4',
+        '70.0.3538.8',
+        '71.0.3543.3',
+        '71.0.3543.2',
+        '71.0.3543.1',
+        '71.0.3543.0',
+        '70.0.3538.7',
+        '69.0.3497.83',
+        '71.0.3542.2',
+        '71.0.3542.1',
+        '71.0.3542.0',
+        '70.0.3538.6',
+        '69.0.3497.82',
+        '69.0.3497.81',
+        '71.0.3541.1',
+        '71.0.3541.0',
+        '70.0.3538.5',
+        '69.0.3497.80',
+        '71.0.3540.1',
+        '71.0.3540.0',
+        '70.0.3538.4',
+        '69.0.3497.79',
+        '70.0.3538.3',
+        '71.0.3539.1',
+        '71.0.3539.0',
+        '69.0.3497.78',
+        '68.0.3440.134',
+        '69.0.3497.77',
+        '70.0.3538.2',
+        '70.0.3538.1',
+        '70.0.3538.0',
+        '69.0.3497.76',
+        '68.0.3440.133',
+        '69.0.3497.75',
+        '70.0.3537.2',
+        '70.0.3537.1',
+        '70.0.3537.0',
+        '69.0.3497.74',
+        '68.0.3440.132',
+        '70.0.3536.0',
+        '70.0.3535.5',
+        '70.0.3535.4',
+        '70.0.3535.3',
+        '69.0.3497.73',
+        '68.0.3440.131',
+        '70.0.3532.8',
+        '70.0.3532.7',
+        '69.0.3497.72',
+        '69.0.3497.71',
+        '70.0.3535.2',
+        '70.0.3535.1',
+        '70.0.3535.0',
+        '69.0.3497.70',
+        '68.0.3440.130',
+        '69.0.3497.69',
+        '68.0.3440.129',
+        '70.0.3534.4',
+        '70.0.3534.3',
+        '70.0.3534.2',
+        '70.0.3534.1',
+        '70.0.3534.0',
+        '69.0.3497.68',
+        '68.0.3440.128',
+        '70.0.3533.2',
+        '70.0.3533.1',
+        '70.0.3533.0',
+        '69.0.3497.67',
+        '68.0.3440.127',
+        '70.0.3532.6',
+        '70.0.3532.5',
+        '70.0.3532.4',
+        '69.0.3497.66',
+        '68.0.3440.126',
+        '70.0.3532.3',
+        '70.0.3532.2',
+        '70.0.3532.1',
+        '69.0.3497.60',
+        '69.0.3497.65',
+        '69.0.3497.64',
+        '70.0.3532.0',
+        '70.0.3531.0',
+        '70.0.3530.4',
+        '70.0.3530.3',
+        '70.0.3530.2',
+        '69.0.3497.58',
+        '68.0.3440.125',
+        '69.0.3497.57',
+        '69.0.3497.56',
+        '69.0.3497.55',
+        '69.0.3497.54',
+        '70.0.3530.1',
+        '70.0.3530.0',
+        '69.0.3497.53',
+        '68.0.3440.124',
+        '69.0.3497.52',
+        '70.0.3529.3',
+        '70.0.3529.2',
+        '70.0.3529.1',
+        '70.0.3529.0',
+        '69.0.3497.51',
+        '70.0.3528.4',
+        '68.0.3440.123',
+        '70.0.3528.3',
+        '70.0.3528.2',
+        '70.0.3528.1',
+        '70.0.3528.0',
+        '69.0.3497.50',
+        '68.0.3440.122',
+        '70.0.3527.1',
+        '70.0.3527.0',
+        '69.0.3497.49',
+        '68.0.3440.121',
+        '70.0.3526.1',
+        '70.0.3526.0',
+        '68.0.3440.120',
+        '69.0.3497.48',
+        '69.0.3497.47',
+        '68.0.3440.119',
+        '68.0.3440.118',
+        '70.0.3525.5',
+        '70.0.3525.4',
+        '70.0.3525.3',
+        '68.0.3440.117',
+        '69.0.3497.46',
+        '70.0.3525.2',
+        '70.0.3525.1',
+        '70.0.3525.0',
+        '69.0.3497.45',
+        '68.0.3440.116',
+        '70.0.3524.4',
+        '70.0.3524.3',
+        '69.0.3497.44',
+        '70.0.3524.2',
+        '70.0.3524.1',
+        '70.0.3524.0',
+        '70.0.3523.2',
+        '69.0.3497.43',
+        '68.0.3440.115',
+        '70.0.3505.9',
+        '69.0.3497.42',
+        '70.0.3505.8',
+        '70.0.3523.1',
+        '70.0.3523.0',
+        '69.0.3497.41',
+        '68.0.3440.114',
+        '70.0.3505.7',
+        '69.0.3497.40',
+        '70.0.3522.1',
+        '70.0.3522.0',
+        '70.0.3521.2',
+        '69.0.3497.39',
+        '68.0.3440.113',
+        '70.0.3505.6',
+        '70.0.3521.1',
+        '70.0.3521.0',
+        '69.0.3497.38',
+        '68.0.3440.112',
+        '70.0.3520.1',
+        '70.0.3520.0',
+        '69.0.3497.37',
+        '68.0.3440.111',
+        '70.0.3519.3',
+        '70.0.3519.2',
+        '70.0.3519.1',
+        '70.0.3519.0',
+        '69.0.3497.36',
+        '68.0.3440.110',
+        '70.0.3518.1',
+        '70.0.3518.0',
+        '69.0.3497.35',
+        '69.0.3497.34',
+        '68.0.3440.109',
+        '70.0.3517.1',
+        '70.0.3517.0',
+        '69.0.3497.33',
+        '68.0.3440.108',
+        '69.0.3497.32',
+        '70.0.3516.3',
+        '70.0.3516.2',
+        '70.0.3516.1',
+        '70.0.3516.0',
+        '69.0.3497.31',
+        '68.0.3440.107',
+        '70.0.3515.4',
+        '68.0.3440.106',
+        '70.0.3515.3',
+        '70.0.3515.2',
+        '70.0.3515.1',
+        '70.0.3515.0',
+        '69.0.3497.30',
+        '68.0.3440.105',
+        '68.0.3440.104',
+        '70.0.3514.2',
+        '70.0.3514.1',
+        '70.0.3514.0',
+        '69.0.3497.29',
+        '68.0.3440.103',
+        '70.0.3513.1',
+        '70.0.3513.0',
+        '69.0.3497.28',
+    )
+    return _USER_AGENT_TPL % random.choice(_CHROME_VERSIONS)
+
+
 std_headers = {
-    'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20100101 Firefox/10.0 (Chrome)',
+    'User-Agent': random_user_agent(),
     'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
     'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
     'Accept-Encoding': 'gzip, deflate',
@@ -60,6 +1677,106 @@ std_headers = {
 }
 
 
+USER_AGENTS = {
+    'Safari': 'Mozilla/5.0 (X11; Linux x86_64; rv:10.0) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27',
+}
+
+
+NO_DEFAULT = object()
+
+ENGLISH_MONTH_NAMES = [
+    'January', 'February', 'March', 'April', 'May', 'June',
+    'July', 'August', 'September', 'October', 'November', 'December']
+
+MONTH_NAMES = {
+    'en': ENGLISH_MONTH_NAMES,
+    'fr': [
+        'janvier', 'février', 'mars', 'avril', 'mai', 'juin',
+        'juillet', 'août', 'septembre', 'octobre', 'novembre', 'décembre'],
+}
+
+KNOWN_EXTENSIONS = (
+    'mp4', 'm4a', 'm4p', 'm4b', 'm4r', 'm4v', 'aac',
+    'flv', 'f4v', 'f4a', 'f4b',
+    'webm', 'ogg', 'ogv', 'oga', 'ogx', 'spx', 'opus',
+    'mkv', 'mka', 'mk3d',
+    'avi', 'divx',
+    'mov',
+    'asf', 'wmv', 'wma',
+    '3gp', '3g2',
+    'mp3',
+    'flac',
+    'ape',
+    'wav',
+    'f4f', 'f4m', 'm3u8', 'smil')
+
+# needed for sanitizing filenames in restricted mode
+ACCENT_CHARS = dict(zip('ÃÃÃÃÃÃ
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÅÃÅÃÃÃÃŰÃÃÃàáâãäåæçèéêëìÃîïðñòóôõöÅøÅùúûüűýþÿ',
+                        itertools.chain('AAAAAA', ['AE'], 'CEEEEIIIIDNOOOOOOO', ['OE'], 'UUUUUY', ['TH', 'ss'],
+                                        'aaaaaa', ['ae'], 'ceeeeiiiionooooooo', ['oe'], 'uuuuuy', ['th'], 'y')))
+
+DATE_FORMATS = (
+    '%d %B %Y',
+    '%d %b %Y',
+    '%B %d %Y',
+    '%B %dst %Y',
+    '%B %dnd %Y',
+    '%B %drd %Y',
+    '%B %dth %Y',
+    '%b %d %Y',
+    '%b %dst %Y',
+    '%b %dnd %Y',
+    '%b %drd %Y',
+    '%b %dth %Y',
+    '%b %dst %Y %I:%M',
+    '%b %dnd %Y %I:%M',
+    '%b %drd %Y %I:%M',
+    '%b %dth %Y %I:%M',
+    '%Y %m %d',
+    '%Y-%m-%d',
+    '%Y/%m/%d',
+    '%Y/%m/%d %H:%M',
+    '%Y/%m/%d %H:%M:%S',
+    '%Y-%m-%d %H:%M',
+    '%Y-%m-%d %H:%M:%S',
+    '%Y-%m-%d %H:%M:%S.%f',
+    '%d.%m.%Y %H:%M',
+    '%d.%m.%Y %H.%M',
+    '%Y-%m-%dT%H:%M:%SZ',
+    '%Y-%m-%dT%H:%M:%S.%fZ',
+    '%Y-%m-%dT%H:%M:%S.%f0Z',
+    '%Y-%m-%dT%H:%M:%S',
+    '%Y-%m-%dT%H:%M:%S.%f',
+    '%Y-%m-%dT%H:%M',
+    '%b %d %Y at %H:%M',
+    '%b %d %Y at %H:%M:%S',
+    '%B %d %Y at %H:%M',
+    '%B %d %Y at %H:%M:%S',
+)
+
+DATE_FORMATS_DAY_FIRST = list(DATE_FORMATS)
+DATE_FORMATS_DAY_FIRST.extend([
+    '%d-%m-%Y',
+    '%d.%m.%Y',
+    '%d.%m.%y',
+    '%d/%m/%Y',
+    '%d/%m/%y',
+    '%d/%m/%Y %H:%M:%S',
+])
+
+DATE_FORMATS_MONTH_FIRST = list(DATE_FORMATS)
+DATE_FORMATS_MONTH_FIRST.extend([
+    '%m-%d-%Y',
+    '%m.%d.%Y',
+    '%m/%d/%Y',
+    '%m/%d/%y',
+    '%m/%d/%Y %H:%M:%S',
+])
+
+PACKED_CODES_RE = r"}\('(.+)',(\d+),(\d+),'([^']+)'\.split\('\|'\)"
+JSON_LD_RE = r'(?is)'
+
+
 def preferredencoding():
     """Get preferred encoding.
 
@@ -69,7 +1786,7 @@ def preferredencoding():
     try:
         pref = locale.getpreferredencoding()
         'TEST'.encode(pref)
-    except:
+    except Exception:
         pref = 'UTF-8'
 
     return pref
@@ -108,7 +1825,7 @@ def write_json_file(obj, fn):
             'encoding': 'utf-8',
         })
 
-    tf = tempfile.NamedTemporaryFile(**args)
+    tf = tempfile.NamedTemporaryFile(**compat_kwargs(args))
 
     try:
         with tf:
@@ -121,7 +1838,7 @@ def write_json_file(obj, fn):
             except OSError:
                 pass
         os.rename(tf.name, fn)
-    except:
+    except Exception:
         try:
             os.remove(tf.name)
         except OSError:
@@ -130,21 +1847,17 @@ def write_json_file(obj, fn):
 
 
 if sys.version_info >= (2, 7):
-    def find_xpath_attr(node, xpath, key, val):
+    def find_xpath_attr(node, xpath, key, val=None):
         """ Find the xpath xpath[@key=val] """
-        assert re.match(r'^[a-zA-Z-]+$', key)
-        assert re.match(r'^[a-zA-Z0-9@\s:._-]*$', val)
-        expr = xpath + "[@%s='%s']" % (key, val)
+        assert re.match(r'^[a-zA-Z_-]+$', key)
+        expr = xpath + ('[@%s]' % key if val is None else "[@%s='%s']" % (key, val))
         return node.find(expr)
 else:
-    def find_xpath_attr(node, xpath, key, val):
-        # Here comes the crazy part: In 2.6, if the xpath is a unicode,
-        # .//node does not match if a node is a direct child of . !
-        if isinstance(xpath, unicode):
-            xpath = xpath.encode('ascii')
-
-        for f in node.findall(xpath):
-            if f.attrib.get(key) == val:
+    def find_xpath_attr(node, xpath, key, val=None):
+        for f in node.findall(compat_xpath(xpath)):
+            if key not in f.attrib:
+                continue
+            if val is None or f.attrib.get(key) == val:
                 return f
         return None
 
@@ -164,46 +1877,139 @@ def xpath_with_ns(path, ns_map):
     return '/'.join(replaced)
 
 
-def xpath_text(node, xpath, name=None, fatal=False):
-    if sys.version_info < (2, 7):  # Crazy 2.6
-        xpath = xpath.encode('ascii')
+def xpath_element(node, xpath, name=None, fatal=False, default=NO_DEFAULT):
+    def _find_xpath(xpath):
+        return node.find(compat_xpath(xpath))
 
-    n = node.find(xpath)
-    if n is None or n.text is None:
-        if fatal:
+    if isinstance(xpath, (str, compat_str)):
+        n = _find_xpath(xpath)
+    else:
+        for xp in xpath:
+            n = _find_xpath(xp)
+            if n is not None:
+                break
+
+    if n is None:
+        if default is not NO_DEFAULT:
+            return default
+        elif fatal:
             name = xpath if name is None else name
             raise ExtractorError('Could not find XML element %s' % name)
         else:
             return None
+    return n
+
+
+def xpath_text(node, xpath, name=None, fatal=False, default=NO_DEFAULT):
+    n = xpath_element(node, xpath, name, fatal=fatal, default=default)
+    if n is None or n == default:
+        return n
+    if n.text is None:
+        if default is not NO_DEFAULT:
+            return default
+        elif fatal:
+            name = xpath if name is None else name
+            raise ExtractorError('Could not find XML element\'s text %s' % name)
+        else:
+            return None
     return n.text
 
 
+def xpath_attr(node, xpath, key, name=None, fatal=False, default=NO_DEFAULT):
+    n = find_xpath_attr(node, xpath, key)
+    if n is None:
+        if default is not NO_DEFAULT:
+            return default
+        elif fatal:
+            name = '%s[@%s]' % (xpath, key) if name is None else name
+            raise ExtractorError('Could not find XML attribute %s' % name)
+        else:
+            return None
+    return n.attrib[key]
+
+
 def get_element_by_id(id, html):
     """Return the content of the tag with the specified ID in the passed HTML document"""
-    return get_element_by_attribute("id", id, html)
+    return get_element_by_attribute('id', id, html)
+
+
+def get_element_by_class(class_name, html):
+    """Return the content of the first tag with the specified class in the passed HTML document"""
+    retval = get_elements_by_class(class_name, html)
+    return retval[0] if retval else None
+
+
+def get_element_by_attribute(attribute, value, html, escape_value=True):
+    retval = get_elements_by_attribute(attribute, value, html, escape_value)
+    return retval[0] if retval else None
 
 
-def get_element_by_attribute(attribute, value, html):
+def get_elements_by_class(class_name, html):
+    """Return the content of all tags with the specified class in the passed HTML document as a list"""
+    return get_elements_by_attribute(
+        'class', r'[^\'"]*\b%s\b[^\'"]*' % re.escape(class_name),
+        html, escape_value=False)
+
+
+def get_elements_by_attribute(attribute, value, html, escape_value=True):
     """Return the content of the tag with the specified attribute in the passed HTML document"""
 
-    m = re.search(r'''(?xs)
+    value = re.escape(value) if escape_value else value
+
+    retlist = []
+    for m in re.finditer(r'''(?xs)
         <([a-zA-Z0-9:._-]+)
-         (?:\s+[a-zA-Z0-9:._-]+(?:=[a-zA-Z0-9:._-]+|="[^"]+"|='[^']+'))*?
+         (?:\s+[a-zA-Z0-9:._-]+(?:=[a-zA-Z0-9:._-]*|="[^"]*"|='[^']*'|))*?
          \s+%s=['"]?%s['"]?
-         (?:\s+[a-zA-Z0-9:._-]+(?:=[a-zA-Z0-9:._-]+|="[^"]+"|='[^']+'))*?
+         (?:\s+[a-zA-Z0-9:._-]+(?:=[a-zA-Z0-9:._-]*|="[^"]*"|='[^']*'|))*?
         \s*>
         (?P.*?)
         \1>
-    ''' % (re.escape(attribute), re.escape(value)), html)
-
-    if not m:
-        return None
-    res = m.group('content')
-
-    if res.startswith('"') or res.startswith("'"):
-        res = res[1:-1]
-
-    return unescapeHTML(res)
+    ''' % (re.escape(attribute), value), html):
+        res = m.group('content')
+
+        if res.startswith('"') or res.startswith("'"):
+            res = res[1:-1]
+
+        retlist.append(unescapeHTML(res))
+
+    return retlist
+
+
+class HTMLAttributeParser(compat_HTMLParser):
+    """Trivial HTML parser to gather the attributes for a single element"""
+    def __init__(self):
+        self.attrs = {}
+        compat_HTMLParser.__init__(self)
+
+    def handle_starttag(self, tag, attrs):
+        self.attrs = dict(attrs)
+
+
+def extract_attributes(html_element):
+    """Given a string for an HTML element such as
+    
+    Decode and return a dictionary of attributes.
+    {
+        'a': 'foo', 'b': 'bar', c: 'baz', d: 'boz',
+        'empty': '', 'noval': None, 'entity': '&',
+        'sq': '"', 'dq': '\''
+    }.
+    NB HTMLParser is stricter in Python 2.6 & 3.2 than in later versions,
+    but the cases in the unit test will work for all of 2.6, 2.7, 3.2-3.5.
+    """
+    parser = HTMLAttributeParser()
+    try:
+        parser.feed(html_element)
+        parser.close()
+    # Older Python may throw HTMLParseError in case of malformed HTML
+    except compat_HTMLParseError:
+        pass
+    return parser.attrs
 
 
 def clean_html(html):
@@ -214,8 +2020,8 @@ def clean_html(html):
 
     # Newline vs 
     html = html.replace('\n', ' ')
-    html = re.sub(r'\s*<\s*br\s*/?\s*>\s*', '\n', html)
-    html = re.sub(r'<\s*/\s*p\s*>\s*<\s*p[^>]*>', '\n', html)
+    html = re.sub(r'(?u)\s*<\s*br\s*/?\s*>\s*', '\n', html)
+    html = re.sub(r'(?u)<\s*/\s*p\s*>\s*<\s*p[^>]*>', '\n', html)
     # Strip html tags
     html = re.sub('<.*?>', '', html)
     # Replace html entities
@@ -246,15 +2052,12 @@ def sanitize_open(filename, open_mode):
             raise
 
         # In case of error, try to remove win32 forbidden chars
-        alt_filename = os.path.join(
-            re.sub('[/<>:"\\|\\\\?\\*]', '#', path_part)
-            for path_part in os.path.split(filename)
-        )
+        alt_filename = sanitize_path(filename)
         if alt_filename == filename:
             raise
         else:
             # An exception here should be caught in the caller
-            stream = open(encodeFilename(filename), open_mode)
+            stream = open(encodeFilename(alt_filename), open_mode)
             return (stream, alt_filename)
 
 
@@ -270,9 +2073,12 @@ def timeconvert(timestr):
 def sanitize_filename(s, restricted=False, is_id=False):
     """Sanitizes a string so it could be used as part of a filename.
     If restricted is set, use a stricter subset of allowed characters.
-    Set is_id if this is not an arbitrary string, but an ID that should be kept if possible
+    Set is_id if this is not an arbitrary string, but an ID that should be kept
+    if possible.
     """
     def replace_insane(char):
+        if restricted and char in ACCENT_CHARS:
+            return ACCENT_CHARS[char]
         if char == '?' or ord(char) < 32 or ord(char) == 127:
             return ''
         elif char == '"':
@@ -297,11 +2103,59 @@ def sanitize_filename(s, restricted=False, is_id=False):
         # Common case of "Foreign band name - English song title"
         if restricted and result.startswith('-_'):
             result = result[2:]
+        if result.startswith('-'):
+            result = '_' + result[len('-'):]
+        result = result.lstrip('.')
         if not result:
             result = '_'
     return result
 
 
+def sanitize_path(s):
+    """Sanitizes and normalizes path on Windows"""
+    if sys.platform != 'win32':
+        return s
+    drive_or_unc, _ = os.path.splitdrive(s)
+    if sys.version_info < (2, 7) and not drive_or_unc:
+        drive_or_unc, _ = os.path.splitunc(s)
+    norm_path = os.path.normpath(remove_start(s, drive_or_unc)).split(os.path.sep)
+    if drive_or_unc:
+        norm_path.pop(0)
+    sanitized_path = [
+        path_part if path_part in ['.', '..'] else re.sub(r'(?:[/<>:"\|\\?\*]|[\s.]$)', '#', path_part)
+        for path_part in norm_path]
+    if drive_or_unc:
+        sanitized_path.insert(0, drive_or_unc + os.path.sep)
+    return os.path.join(*sanitized_path)
+
+
+def sanitize_url(url):
+    # Prepend protocol-less URLs with `http:` scheme in order to mitigate
+    # the number of unwanted failures due to missing protocol
+    if url.startswith('//'):
+        return 'http:%s' % url
+    # Fix some common typos seen so far
+    COMMON_TYPOS = (
+        # https://github.com/ytdl-org/youtube-dl/issues/15649
+        (r'^httpss://', r'https://'),
+        # https://bx1.be/lives/direct-tv/
+        (r'^rmtp([es]?)://', r'rtmp\1://'),
+    )
+    for mistake, fixup in COMMON_TYPOS:
+        if re.match(mistake, url):
+            return re.sub(mistake, fixup, url)
+    return url
+
+
+def sanitized_Request(url, *args, **kwargs):
+    return compat_urllib_request.Request(sanitize_url(url), *args, **kwargs)
+
+
+def expand_path(s):
+    """Expand shell variables and ~"""
+    return os.path.expandvars(compat_expanduser(s))
+
+
 def orderedSet(iterable):
     """ Remove all duplicates from the input iterable """
     res = []
@@ -311,13 +2165,20 @@ def orderedSet(iterable):
     return res
 
 
-def _htmlentity_transform(entity):
+def _htmlentity_transform(entity_with_semicolon):
     """Transforms an HTML entity to a character."""
+    entity = entity_with_semicolon[:-1]
+
     # Known non-numeric HTML entity
     if entity in compat_html_entities.name2codepoint:
         return compat_chr(compat_html_entities.name2codepoint[entity])
 
-    mobj = re.match(r'#(x?[0-9]+)', entity)
+    # TODO: HTML5 allows entities without a semicolon. For example,
+    # 'Éric' should be decoded as 'Ãric'.
+    if entity_with_semicolon in compat_html_entities_html5:
+        return compat_html_entities_html5[entity_with_semicolon]
+
+    mobj = re.match(r'#(x[0-9a-fA-F]+|[0-9]+)', entity)
     if mobj is not None:
         numstr = mobj.group(1)
         if numstr.startswith('x'):
@@ -325,10 +2186,14 @@ def _htmlentity_transform(entity):
             numstr = '0%s' % numstr
         else:
             base = 10
-        return compat_chr(int(numstr, base))
+        # See https://github.com/ytdl-org/youtube-dl/issues/7518
+        try:
+            return compat_chr(int(numstr, base))
+        except ValueError:
+            pass
 
     # Unknown entity in name, return its literal representation
-    return ('&%s;' % entity)
+    return '&%s;' % entity
 
 
 def unescapeHTML(s):
@@ -337,7 +2202,19 @@ def unescapeHTML(s):
     assert type(s) == compat_str
 
     return re.sub(
-        r'&([^;]+);', lambda m: _htmlentity_transform(m.group(1)), s)
+        r'&([^&;]+;)', lambda m: _htmlentity_transform(m.group(1)), s)
+
+
+def get_subprocess_encoding():
+    if sys.platform == 'win32' and sys.getwindowsversion()[0] >= 5:
+        # For subprocess calls, encode with locale encoding
+        # Refer to http://stackoverflow.com/a/9951851/35070
+        encoding = preferredencoding()
+    else:
+        encoding = sys.getfilesystemencoding()
+    if encoding is None:
+        encoding = 'utf-8'
+    return encoding
 
 
 def encodeFilename(s, for_subprocess=False):
@@ -351,21 +2228,28 @@ def encodeFilename(s, for_subprocess=False):
     if sys.version_info >= (3, 0):
         return s
 
-    if sys.platform == 'win32' and sys.getwindowsversion()[0] >= 5:
-        # Pass '' directly to use Unicode APIs on Windows 2000 and up
-        # (Detecting Windows NT 4 is tricky because 'major >= 4' would
-        # match Windows 9x series as well. Besides, NT 4 is obsolete.)
-        if not for_subprocess:
-            return s
-        else:
-            # For subprocess calls, encode with locale encoding
-            # Refer to http://stackoverflow.com/a/9951851/35070
-            encoding = preferredencoding()
-    else:
-        encoding = sys.getfilesystemencoding()
-    if encoding is None:
-        encoding = 'utf-8'
-    return s.encode(encoding, 'ignore')
+    # Pass '' directly to use Unicode APIs on Windows 2000 and up
+    # (Detecting Windows NT 4 is tricky because 'major >= 4' would
+    # match Windows 9x series as well. Besides, NT 4 is obsolete.)
+    if not for_subprocess and sys.platform == 'win32' and sys.getwindowsversion()[0] >= 5:
+        return s
+
+    # Jython assumes filenames are Unicode strings though reported as Python 2.x compatible
+    if sys.platform.startswith('java'):
+        return s
+
+    return s.encode(get_subprocess_encoding(), 'ignore')
+
+
+def decodeFilename(b, for_subprocess=False):
+
+    if sys.version_info >= (3, 0):
+        return b
+
+    if not isinstance(b, bytes):
+        return b
+
+    return b.decode(get_subprocess_encoding(), 'ignore')
 
 
 def encodeArgument(s):
@@ -377,6 +2261,10 @@ def encodeArgument(s):
     return encodeFilename(s, True)
 
 
+def decodeArgument(b):
+    return decodeFilename(b, True)
+
+
 def decodeOption(optval):
     if optval is None:
         return optval
@@ -411,25 +2299,9 @@ def make_HTTPS_handler(params, **kwargs):
             pass
 
     if sys.version_info < (3, 2):
-        import httplib
-
-        class HTTPSConnectionV3(httplib.HTTPSConnection):
-            def __init__(self, *args, **kwargs):
-                httplib.HTTPSConnection.__init__(self, *args, **kwargs)
-
-            def connect(self):
-                sock = socket.create_connection((self.host, self.port), self.timeout)
-                if getattr(self, '_tunnel_host', False):
-                    self.sock = sock
-                    self._tunnel()
-                try:
-                    self.sock = ssl.wrap_socket(sock, self.key_file, self.cert_file, ssl_version=ssl.PROTOCOL_TLSv1)
-                except ssl.SSLError:
-                    self.sock = ssl.wrap_socket(sock, self.key_file, self.cert_file, ssl_version=ssl.PROTOCOL_SSLv23)
-
-        return YoutubeDLHTTPSHandler(params, https_conn_class=HTTPSConnectionV3, **kwargs)
+        return YoutubeDLHTTPSHandler(params, **kwargs)
     else:  # Python < 3.4
-        context = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
+        context = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
         context.verify_mode = (ssl.CERT_NONE
                                if opts_no_check_certificate
                                else ssl.CERT_REQUIRED)
@@ -437,7 +2309,23 @@ def make_HTTPS_handler(params, **kwargs):
         return YoutubeDLHTTPSHandler(params, context=context, **kwargs)
 
 
-class ExtractorError(Exception):
+def bug_reports_message():
+    if ytdl_is_updateable():
+        update_cmd = 'type  youtube-dl -U  to update'
+    else:
+        update_cmd = 'see  https://yt-dl.org/update  on how to update'
+    msg = '; please report this issue on https://yt-dl.org/bug .'
+    msg += ' Make sure you are using the latest version; %s.' % update_cmd
+    msg += ' Be sure to call youtube-dl with the --verbose flag and include its complete output.'
+    return msg
+
+
+class YoutubeDLError(Exception):
+    """Base exception for YoutubeDL errors."""
+    pass
+
+
+class ExtractorError(YoutubeDLError):
     """Error during info extraction."""
 
     def __init__(self, msg, tb=None, expected=False, cause=None, video_id=None):
@@ -452,13 +2340,7 @@ class ExtractorError(Exception):
         if cause:
             msg += ' (caused by %r)' % cause
         if not expected:
-            if ytdl_is_updateable():
-                update_cmd = 'type  youtube-dl -U  to update'
-            else:
-                update_cmd = 'see  https://yt-dl.org/update  on how to update'
-            msg += '; please report this issue on https://yt-dl.org/bug .'
-            msg += ' Make sure you are using the latest version; %s.' % update_cmd
-            msg += ' Be sure to call youtube-dl with the --verbose flag and include its complete output.'
+            msg += bug_reports_message()
         super(ExtractorError, self).__init__(msg)
 
         self.traceback = tb
@@ -484,7 +2366,19 @@ class RegexNotFoundError(ExtractorError):
     pass
 
 
-class DownloadError(Exception):
+class GeoRestrictedError(ExtractorError):
+    """Geographic restriction Error exception.
+
+    This exception may be thrown when a video is not available from your
+    geographic location due to geographic restrictions imposed by a website.
+    """
+    def __init__(self, msg, countries=None):
+        super(GeoRestrictedError, self).__init__(msg, expected=True)
+        self.msg = msg
+        self.countries = countries
+
+
+class DownloadError(YoutubeDLError):
     """Download Error exception.
 
     This exception may be thrown by FileDownloader objects if they are not
@@ -498,7 +2392,7 @@ class DownloadError(Exception):
         self.exc_info = exc_info
 
 
-class SameFileError(Exception):
+class SameFileError(YoutubeDLError):
     """Same File exception.
 
     This exception will be thrown by FileDownloader objects if they detect
@@ -507,7 +2401,7 @@ class SameFileError(Exception):
     pass
 
 
-class PostProcessingError(Exception):
+class PostProcessingError(YoutubeDLError):
     """Post Processing exception.
 
     This exception may be raised by PostProcessor's .run() method to
@@ -515,15 +2409,16 @@ class PostProcessingError(Exception):
     """
 
     def __init__(self, msg):
+        super(PostProcessingError, self).__init__(msg)
         self.msg = msg
 
 
-class MaxDownloadsReached(Exception):
+class MaxDownloadsReached(YoutubeDLError):
     """ --max-downloads limit has been reached. """
     pass
 
 
-class UnavailableVideoError(Exception):
+class UnavailableVideoError(YoutubeDLError):
     """Unavailable Format exception.
 
     This exception will be thrown when a video is requested
@@ -532,35 +2427,101 @@ class UnavailableVideoError(Exception):
     pass
 
 
-class ContentTooShortError(Exception):
+class ContentTooShortError(YoutubeDLError):
     """Content Too Short exception.
 
     This exception may be raised by FileDownloader objects when a file they
     download is too small for what the server announced first, indicating
     the connection was probably interrupted.
     """
-    # Both in bytes
-    downloaded = None
-    expected = None
 
     def __init__(self, downloaded, expected):
+        super(ContentTooShortError, self).__init__(
+            'Downloaded {0} bytes, expected {1} bytes'.format(downloaded, expected)
+        )
+        # Both in bytes
         self.downloaded = downloaded
         self.expected = expected
 
 
+class XAttrMetadataError(YoutubeDLError):
+    def __init__(self, code=None, msg='Unknown error'):
+        super(XAttrMetadataError, self).__init__(msg)
+        self.code = code
+        self.msg = msg
+
+        # Parsing code and msg
+        if (self.code in (errno.ENOSPC, errno.EDQUOT)
+                or 'No space left' in self.msg or 'Disk quota excedded' in self.msg):
+            self.reason = 'NO_SPACE'
+        elif self.code == errno.E2BIG or 'Argument list too long' in self.msg:
+            self.reason = 'VALUE_TOO_LONG'
+        else:
+            self.reason = 'NOT_SUPPORTED'
+
+
+class XAttrUnavailableError(YoutubeDLError):
+    pass
+
+
 def _create_http_connection(ydl_handler, http_class, is_https, *args, **kwargs):
-    hc = http_class(*args, **kwargs)
+    # Working around python 2 bug (see http://bugs.python.org/issue17849) by limiting
+    # expected HTTP responses to meet HTTP/1.0 or later (see also
+    # https://github.com/ytdl-org/youtube-dl/issues/6727)
+    if sys.version_info < (3, 0):
+        kwargs['strict'] = True
+    hc = http_class(*args, **compat_kwargs(kwargs))
     source_address = ydl_handler._params.get('source_address')
+
     if source_address is not None:
+        # This is to workaround _create_connection() from socket where it will try all
+        # address data from getaddrinfo() including IPv6. This filters the result from
+        # getaddrinfo() based on the source_address value.
+        # This is based on the cpython socket.create_connection() function.
+        # https://github.com/python/cpython/blob/master/Lib/socket.py#L691
+        def _create_connection(address, timeout=socket._GLOBAL_DEFAULT_TIMEOUT, source_address=None):
+            host, port = address
+            err = None
+            addrs = socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM)
+            af = socket.AF_INET if '.' in source_address[0] else socket.AF_INET6
+            ip_addrs = [addr for addr in addrs if addr[0] == af]
+            if addrs and not ip_addrs:
+                ip_version = 'v4' if af == socket.AF_INET else 'v6'
+                raise socket.error(
+                    "No remote IP%s addresses available for connect, can't use '%s' as source address"
+                    % (ip_version, source_address[0]))
+            for res in ip_addrs:
+                af, socktype, proto, canonname, sa = res
+                sock = None
+                try:
+                    sock = socket.socket(af, socktype, proto)
+                    if timeout is not socket._GLOBAL_DEFAULT_TIMEOUT:
+                        sock.settimeout(timeout)
+                    sock.bind(source_address)
+                    sock.connect(sa)
+                    err = None  # Explicitly break reference cycle
+                    return sock
+                except socket.error as _:
+                    err = _
+                    if sock is not None:
+                        sock.close()
+            if err is not None:
+                raise err
+            else:
+                raise socket.error('getaddrinfo returns an empty list')
+        if hasattr(hc, '_create_connection'):
+            hc._create_connection = _create_connection
         sa = (source_address, 0)
         if hasattr(hc, 'source_address'):  # Python 2.7+
             hc.source_address = sa
         else:  # Python 2.6
             def _hc_connect(self, *args, **kwargs):
-                sock = compat_socket_create_connection(
+                sock = _create_connection(
                     (self.host, self.port), self.timeout, sa)
                 if is_https:
-                    self.sock = ssl.wrap_socket(sock, self.key_file, self.cert_file)
+                    self.sock = ssl.wrap_socket(
+                        sock, self.key_file, self.cert_file,
+                        ssl_version=ssl.PROTOCOL_TLSv1)
                 else:
                     self.sock = sock
             hc.connect = functools.partial(_hc_connect, hc)
@@ -568,6 +2529,16 @@ def _create_http_connection(ydl_handler, http_class, is_https, *args, **kwargs):
     return hc
 
 
+def handle_youtubedl_headers(headers):
+    filtered_headers = headers
+
+    if 'Youtubedl-no-compression' in filtered_headers:
+        filtered_headers = dict((k, v) for k, v in filtered_headers.items() if k.lower() != 'accept-encoding')
+        del filtered_headers['Youtubedl-no-compression']
+
+    return filtered_headers
+
+
 class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
     """Handler for HTTP requests and responses.
 
@@ -575,7 +2546,7 @@ class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
     the standard headers to every HTTP request and handles gzipped and
     deflated responses from web servers. If compression is to be avoided in
     a particular request, the original request in the program code only has
-    to include the HTTP header "Youtubedl-No-Compression", which will be
+    to include the HTTP header "Youtubedl-no-compression", which will be
     removed before making the real request.
 
     Part of this code was copied from:
@@ -591,8 +2562,15 @@ class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
         self._params = params
 
     def http_open(self, req):
+        conn_class = compat_http_client.HTTPConnection
+
+        socks_proxy = req.headers.get('Ytdl-socks-proxy')
+        if socks_proxy:
+            conn_class = make_socks_conn_class(conn_class, socks_proxy)
+            del req.headers['Ytdl-socks-proxy']
+
         return self.do_open(functools.partial(
-            _create_http_connection, self, compat_http_client.HTTPConnection, False),
+            _create_http_connection, self, conn_class, False),
             req)
 
     @staticmethod
@@ -602,27 +2580,29 @@ class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
         except zlib.error:
             return zlib.decompress(data)
 
-    @staticmethod
-    def addinfourl_wrapper(stream, headers, url, code):
-        if hasattr(compat_urllib_request.addinfourl, 'getcode'):
-            return compat_urllib_request.addinfourl(stream, headers, url, code)
-        ret = compat_urllib_request.addinfourl(stream, headers, url)
-        ret.code = code
-        return ret
-
     def http_request(self, req):
+        # According to RFC 3986, URLs can not contain non-ASCII characters, however this is not
+        # always respected by websites, some tend to give out URLs with non percent-encoded
+        # non-ASCII characters (see telemb.py, ard.py [#3412])
+        # urllib chokes on URLs with non-ASCII characters (see http://bugs.python.org/issue3991)
+        # To work around aforementioned issue we will replace request's original URL with
+        # percent-encoded one
+        # Since redirects are also affected (e.g. http://www.southpark.de/alle-episoden/s18e09)
+        # the code of this workaround has been moved here from YoutubeDL.urlopen()
+        url = req.get_full_url()
+        url_escaped = escape_url(url)
+
+        # Substitute URL if any change after escaping
+        if url != url_escaped:
+            req = update_Request(req, url=url_escaped)
+
         for h, v in std_headers.items():
-            if h not in req.headers:
+            # Capitalize is needed because of Python bug 2275: http://bugs.python.org/issue2275
+            # The dict keys are capitalized because of this bug by urllib
+            if h.capitalize() not in req.headers:
                 req.add_header(h, v)
-        if 'Youtubedl-no-compression' in req.headers:
-            if 'Accept-encoding' in req.headers:
-                del req.headers['Accept-encoding']
-            del req.headers['Youtubedl-no-compression']
-        if 'Youtubedl-user-agent' in req.headers:
-            if 'User-agent' in req.headers:
-                del req.headers['User-agent']
-            req.headers['User-agent'] = req.headers['Youtubedl-user-agent']
-            del req.headers['Youtubedl-user-agent']
+
+        req.headers = handle_youtubedl_headers(req.headers)
 
         if sys.version_info < (2, 7) and '#' in req.get_full_url():
             # Python 2.6 is brain-dead when it comes to fragments
@@ -651,19 +2631,80 @@ class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
                     break
                 else:
                     raise original_ioerror
-            resp = self.addinfourl_wrapper(uncompressed, old_resp.headers, old_resp.url, old_resp.code)
+            resp = compat_urllib_request.addinfourl(uncompressed, old_resp.headers, old_resp.url, old_resp.code)
             resp.msg = old_resp.msg
+            del resp.headers['Content-encoding']
         # deflate
         if resp.headers.get('Content-encoding', '') == 'deflate':
             gz = io.BytesIO(self.deflate(resp.read()))
-            resp = self.addinfourl_wrapper(gz, old_resp.headers, old_resp.url, old_resp.code)
+            resp = compat_urllib_request.addinfourl(gz, old_resp.headers, old_resp.url, old_resp.code)
             resp.msg = old_resp.msg
+            del resp.headers['Content-encoding']
+        # Percent-encode redirect URL of Location HTTP header to satisfy RFC 3986 (see
+        # https://github.com/ytdl-org/youtube-dl/issues/6457).
+        if 300 <= resp.code < 400:
+            location = resp.headers.get('Location')
+            if location:
+                # As of RFC 2616 default charset is iso-8859-1 that is respected by python 3
+                if sys.version_info >= (3, 0):
+                    location = location.encode('iso-8859-1').decode('utf-8')
+                else:
+                    location = location.decode('utf-8')
+                location_escaped = escape_url(location)
+                if location != location_escaped:
+                    del resp.headers['Location']
+                    if sys.version_info < (3, 0):
+                        location_escaped = location_escaped.encode('utf-8')
+                    resp.headers['Location'] = location_escaped
         return resp
 
     https_request = http_request
     https_response = http_response
 
 
+def make_socks_conn_class(base_class, socks_proxy):
+    assert issubclass(base_class, (
+        compat_http_client.HTTPConnection, compat_http_client.HTTPSConnection))
+
+    url_components = compat_urlparse.urlparse(socks_proxy)
+    if url_components.scheme.lower() == 'socks5':
+        socks_type = ProxyType.SOCKS5
+    elif url_components.scheme.lower() in ('socks', 'socks4'):
+        socks_type = ProxyType.SOCKS4
+    elif url_components.scheme.lower() == 'socks4a':
+        socks_type = ProxyType.SOCKS4A
+
+    def unquote_if_non_empty(s):
+        if not s:
+            return s
+        return compat_urllib_parse_unquote_plus(s)
+
+    proxy_args = (
+        socks_type,
+        url_components.hostname, url_components.port or 1080,
+        True,  # Remote DNS
+        unquote_if_non_empty(url_components.username),
+        unquote_if_non_empty(url_components.password),
+    )
+
+    class SocksConnection(base_class):
+        def connect(self):
+            self.sock = sockssocket()
+            self.sock.setproxy(*proxy_args)
+            if type(self.timeout) in (int, float):
+                self.sock.settimeout(self.timeout)
+            self.sock.connect((self.host, self.port))
+
+            if isinstance(self, compat_http_client.HTTPSConnection):
+                if hasattr(self, '_context'):  # Python > 2.6
+                    self.sock = self._context.wrap_socket(
+                        self.sock, server_hostname=self.host)
+                else:
+                    self.sock = ssl.wrap_socket(self.sock)
+
+    return SocksConnection
+
+
 class YoutubeDLHTTPSHandler(compat_urllib_request.HTTPSHandler):
     def __init__(self, params, https_conn_class=None, *args, **kwargs):
         compat_urllib_request.HTTPSHandler.__init__(self, *args, **kwargs)
@@ -671,24 +2712,183 @@ class YoutubeDLHTTPSHandler(compat_urllib_request.HTTPSHandler):
         self._params = params
 
     def https_open(self, req):
+        kwargs = {}
+        conn_class = self._https_conn_class
+
+        if hasattr(self, '_context'):  # python > 2.6
+            kwargs['context'] = self._context
+        if hasattr(self, '_check_hostname'):  # python 3.x
+            kwargs['check_hostname'] = self._check_hostname
+
+        socks_proxy = req.headers.get('Ytdl-socks-proxy')
+        if socks_proxy:
+            conn_class = make_socks_conn_class(conn_class, socks_proxy)
+            del req.headers['Ytdl-socks-proxy']
+
         return self.do_open(functools.partial(
-            _create_http_connection, self, self._https_conn_class, True),
-            req)
+            _create_http_connection, self, conn_class, True),
+            req, **kwargs)
 
 
-def parse_iso8601(date_str, delimiter='T'):
-    """ Return a UNIX timestamp from the given date """
+class YoutubeDLCookieJar(compat_cookiejar.MozillaCookieJar):
+    """
+    See [1] for cookie file format.
 
-    if date_str is None:
-        return None
+    1. https://curl.haxx.se/docs/http-cookies.html
+    """
+    _HTTPONLY_PREFIX = '#HttpOnly_'
+    _ENTRY_LEN = 7
+    _HEADER = '''# Netscape HTTP Cookie File
+# This file is generated by youtube-dl.  Do not edit.
+
+'''
+    _CookieFileEntry = collections.namedtuple(
+        'CookieFileEntry',
+        ('domain_name', 'include_subdomains', 'path', 'https_only', 'expires_at', 'name', 'value'))
+
+    def save(self, filename=None, ignore_discard=False, ignore_expires=False):
+        """
+        Save cookies to a file.
+
+        Most of the code is taken from CPython 3.8 and slightly adapted
+        to support cookie files with UTF-8 in both python 2 and 3.
+        """
+        if filename is None:
+            if self.filename is not None:
+                filename = self.filename
+            else:
+                raise ValueError(compat_cookiejar.MISSING_FILENAME_TEXT)
+
+        # Store session cookies with `expires` set to 0 instead of an empty
+        # string
+        for cookie in self:
+            if cookie.expires is None:
+                cookie.expires = 0
+
+        with io.open(filename, 'w', encoding='utf-8') as f:
+            f.write(self._HEADER)
+            now = time.time()
+            for cookie in self:
+                if not ignore_discard and cookie.discard:
+                    continue
+                if not ignore_expires and cookie.is_expired(now):
+                    continue
+                if cookie.secure:
+                    secure = 'TRUE'
+                else:
+                    secure = 'FALSE'
+                if cookie.domain.startswith('.'):
+                    initial_dot = 'TRUE'
+                else:
+                    initial_dot = 'FALSE'
+                if cookie.expires is not None:
+                    expires = compat_str(cookie.expires)
+                else:
+                    expires = ''
+                if cookie.value is None:
+                    # cookies.txt regards 'Set-Cookie: foo' as a cookie
+                    # with no name, whereas http.cookiejar regards it as a
+                    # cookie with no value.
+                    name = ''
+                    value = cookie.name
+                else:
+                    name = cookie.name
+                    value = cookie.value
+                f.write(
+                    '\t'.join([cookie.domain, initial_dot, cookie.path,
+                               secure, expires, name, value]) + '\n')
+
+    def load(self, filename=None, ignore_discard=False, ignore_expires=False):
+        """Load cookies from a file."""
+        if filename is None:
+            if self.filename is not None:
+                filename = self.filename
+            else:
+                raise ValueError(compat_cookiejar.MISSING_FILENAME_TEXT)
+
+        def prepare_line(line):
+            if line.startswith(self._HTTPONLY_PREFIX):
+                line = line[len(self._HTTPONLY_PREFIX):]
+            # comments and empty lines are fine
+            if line.startswith('#') or not line.strip():
+                return line
+            cookie_list = line.split('\t')
+            if len(cookie_list) != self._ENTRY_LEN:
+                raise compat_cookiejar.LoadError('invalid length %d' % len(cookie_list))
+            cookie = self._CookieFileEntry(*cookie_list)
+            if cookie.expires_at and not cookie.expires_at.isdigit():
+                raise compat_cookiejar.LoadError('invalid expires at %s' % cookie.expires_at)
+            return line
+
+        cf = io.StringIO()
+        with io.open(filename, encoding='utf-8') as f:
+            for line in f:
+                try:
+                    cf.write(prepare_line(line))
+                except compat_cookiejar.LoadError as e:
+                    write_string(
+                        'WARNING: skipping cookie file entry due to %s: %r\n'
+                        % (e, line), sys.stderr)
+                    continue
+        cf.seek(0)
+        self._really_load(cf, filename, ignore_discard, ignore_expires)
+        # Session cookies are denoted by either `expires` field set to
+        # an empty string or 0. MozillaCookieJar only recognizes the former
+        # (see [1]). So we need force the latter to be recognized as session
+        # cookies on our own.
+        # Session cookies may be important for cookies-based authentication,
+        # e.g. usually, when user does not check 'Remember me' check box while
+        # logging in on a site, some important cookies are stored as session
+        # cookies so that not recognizing them will result in failed login.
+        # 1. https://bugs.python.org/issue17164
+        for cookie in self:
+            # Treat `expires=0` cookies as session cookies
+            if cookie.expires == 0:
+                cookie.expires = None
+                cookie.discard = True
+
+
+class YoutubeDLCookieProcessor(compat_urllib_request.HTTPCookieProcessor):
+    def __init__(self, cookiejar=None):
+        compat_urllib_request.HTTPCookieProcessor.__init__(self, cookiejar)
+
+    def http_response(self, request, response):
+        # Python 2 will choke on next HTTP request in row if there are non-ASCII
+        # characters in Set-Cookie HTTP header of last response (see
+        # https://github.com/ytdl-org/youtube-dl/issues/6769).
+        # In order to at least prevent crashing we will percent encode Set-Cookie
+        # header before HTTPCookieProcessor starts processing it.
+        # if sys.version_info < (3, 0) and response.headers:
+        #     for set_cookie_header in ('Set-Cookie', 'Set-Cookie2'):
+        #         set_cookie = response.headers.get(set_cookie_header)
+        #         if set_cookie:
+        #             set_cookie_escaped = compat_urllib_parse.quote(set_cookie, b"%/;:@&=+$,!~*'()?#[] ")
+        #             if set_cookie != set_cookie_escaped:
+        #                 del response.headers[set_cookie_header]
+        #                 response.headers[set_cookie_header] = set_cookie_escaped
+        return compat_urllib_request.HTTPCookieProcessor.http_response(self, request, response)
+
+    https_request = compat_urllib_request.HTTPCookieProcessor.http_request
+    https_response = http_response
 
+
+class YoutubeDLRedirectHandler(compat_urllib_request.HTTPRedirectHandler):
+    if sys.version_info[0] < 3:
+        def redirect_request(self, req, fp, code, msg, headers, newurl):
+            # On python 2 urlh.geturl() may sometimes return redirect URL
+            # as byte string instead of unicode. This workaround allows
+            # to force it always return unicode.
+            return compat_urllib_request.HTTPRedirectHandler.redirect_request(self, req, fp, code, msg, headers, compat_str(newurl))
+
+
+def extract_timezone(date_str):
     m = re.search(
-        r'(\.[0-9]+)?(?:Z$| ?(?P\+|-)(?P[0-9]{2}):?(?P[0-9]{2})$)',
+        r'^.{8,}?(?PZ$| ?(?P\+|-)(?P[0-9]{2}):?(?P[0-9]{2})$)',
         date_str)
     if not m:
         timezone = datetime.timedelta()
     else:
-        date_str = date_str[:-len(m.group(0))]
+        date_str = date_str[:-len(m.group('tz'))]
         if not m.group('sign'):
             timezone = datetime.timedelta()
         else:
@@ -696,9 +2896,30 @@ def parse_iso8601(date_str, delimiter='T'):
             timezone = datetime.timedelta(
                 hours=sign * int(m.group('hours')),
                 minutes=sign * int(m.group('minutes')))
-    date_format = '%Y-%m-%d{0}%H:%M:%S'.format(delimiter)
-    dt = datetime.datetime.strptime(date_str, date_format) - timezone
-    return calendar.timegm(dt.timetuple())
+    return timezone, date_str
+
+
+def parse_iso8601(date_str, delimiter='T', timezone=None):
+    """ Return a UNIX timestamp from the given date """
+
+    if date_str is None:
+        return None
+
+    date_str = re.sub(r'\.[0-9]+', '', date_str)
+
+    if timezone is None:
+        timezone, date_str = extract_timezone(date_str)
+
+    try:
+        date_format = '%Y-%m-%d{0}%H:%M:%S'.format(delimiter)
+        dt = datetime.datetime.strptime(date_str, date_format) - timezone
+        return calendar.timegm(dt.timetuple())
+    except ValueError:
+        pass
+
+
+def date_formats(day_first=True):
+    return DATE_FORMATS_DAY_FIRST if day_first else DATE_FORMATS_MONTH_FIRST
 
 
 def unified_strdate(date_str, day_first=True):
@@ -709,49 +2930,11 @@ def unified_strdate(date_str, day_first=True):
     upload_date = None
     # Replace commas
     date_str = date_str.replace(',', ' ')
-    # %z (UTC offset) is only supported in python>=3.2
-    date_str = re.sub(r' ?(\+|-)[0-9]{2}:?[0-9]{2}$', '', date_str)
     # Remove AM/PM + timezone
-    date_str = re.sub(r'(?i)\s*(?:AM|PM)\s+[A-Z]+', '', date_str)
-
-    format_expressions = [
-        '%d %B %Y',
-        '%d %b %Y',
-        '%B %d %Y',
-        '%b %d %Y',
-        '%b %dst %Y %I:%M%p',
-        '%b %dnd %Y %I:%M%p',
-        '%b %dth %Y %I:%M%p',
-        '%Y %m %d',
-        '%Y-%m-%d',
-        '%Y/%m/%d',
-        '%Y/%m/%d %H:%M:%S',
-        '%Y-%m-%d %H:%M:%S',
-        '%Y-%m-%d %H:%M:%S.%f',
-        '%d.%m.%Y %H:%M',
-        '%d.%m.%Y %H.%M',
-        '%Y-%m-%dT%H:%M:%SZ',
-        '%Y-%m-%dT%H:%M:%S.%fZ',
-        '%Y-%m-%dT%H:%M:%S.%f0Z',
-        '%Y-%m-%dT%H:%M:%S',
-        '%Y-%m-%dT%H:%M:%S.%f',
-        '%Y-%m-%dT%H:%M',
-    ]
-    if day_first:
-        format_expressions.extend([
-            '%d.%m.%Y',
-            '%d/%m/%Y',
-            '%d/%m/%y',
-            '%d/%m/%Y %H:%M:%S',
-        ])
-    else:
-        format_expressions.extend([
-            '%m.%d.%Y',
-            '%m/%d/%Y',
-            '%m/%d/%y',
-            '%m/%d/%Y %H:%M:%S',
-        ])
-    for expression in format_expressions:
+    date_str = re.sub(r'(?i)\s*(?:AM|PM)(?:\s+[A-Z]+)?', '', date_str)
+    _, date_str = extract_timezone(date_str)
+
+    for expression in date_formats(day_first):
         try:
             upload_date = datetime.datetime.strptime(date_str, expression).strftime('%Y%m%d')
         except ValueError:
@@ -759,22 +2942,62 @@ def unified_strdate(date_str, day_first=True):
     if upload_date is None:
         timetuple = email.utils.parsedate_tz(date_str)
         if timetuple:
-            upload_date = datetime.datetime(*timetuple[:6]).strftime('%Y%m%d')
-    return upload_date
+            try:
+                upload_date = datetime.datetime(*timetuple[:6]).strftime('%Y%m%d')
+            except ValueError:
+                pass
+    if upload_date is not None:
+        return compat_str(upload_date)
+
+
+def unified_timestamp(date_str, day_first=True):
+    if date_str is None:
+        return None
+
+    date_str = re.sub(r'[,|]', '', date_str)
+
+    pm_delta = 12 if re.search(r'(?i)PM', date_str) else 0
+    timezone, date_str = extract_timezone(date_str)
+
+    # Remove AM/PM + timezone
+    date_str = re.sub(r'(?i)\s*(?:AM|PM)(?:\s+[A-Z]+)?', '', date_str)
+
+    # Remove unrecognized timezones from ISO 8601 alike timestamps
+    m = re.search(r'\d{1,2}:\d{1,2}(?:\.\d+)?(?P\s*[A-Z]+)$', date_str)
+    if m:
+        date_str = date_str[:-len(m.group('tz'))]
+
+    # Python only supports microseconds, so remove nanoseconds
+    m = re.search(r'^([0-9]{4,}-[0-9]{1,2}-[0-9]{1,2}T[0-9]{1,2}:[0-9]{1,2}:[0-9]{1,2}\.[0-9]{6})[0-9]+$', date_str)
+    if m:
+        date_str = m.group(1)
+
+    for expression in date_formats(day_first):
+        try:
+            dt = datetime.datetime.strptime(date_str, expression) - timezone + datetime.timedelta(hours=pm_delta)
+            return calendar.timegm(dt.timetuple())
+        except ValueError:
+            pass
+    timetuple = email.utils.parsedate_tz(date_str)
+    if timetuple:
+        return calendar.timegm(timetuple) + pm_delta * 3600
 
 
 def determine_ext(url, default_ext='unknown_video'):
-    if url is None:
+    if url is None or '.' not in url:
         return default_ext
     guess = url.partition('?')[0].rpartition('.')[2]
     if re.match(r'^[A-Za-z0-9]+$', guess):
         return guess
+    # Try extract ext from URLs like http://example.com/foo/bar.mp4/?download
+    elif guess.rstrip('/') in KNOWN_EXTENSIONS:
+        return guess.rstrip('/')
     else:
         return default_ext
 
 
-def subtitles_filename(filename, sub_lang, sub_format):
-    return filename.rsplit('.', 1)[0] + '.' + sub_lang + '.' + sub_format
+def subtitles_filename(filename, sub_lang, sub_format, expected_real_ext=None):
+    return replace_extension(filename, sub_lang + '.' + sub_format, expected_real_ext)
 
 
 def date_from_str(date_str):
@@ -786,14 +3009,14 @@ def date_from_str(date_str):
         return today
     if date_str == 'yesterday':
         return today - datetime.timedelta(days=1)
-    match = re.match('(now|today)(?P[+-])(?P