Update upstream source from tag 'upstream/2019.06.08'

[youtubedl] / youtube_dl / extractor / youtube.py

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 2642ecfffbadeff3c7c184d52bf119328d5bbf60..963c73a2d9cafb3c26e8e5b8bd3c9b52d76b2f44 100644 (file)
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -6,47 +6,80 @@ from __future__ import unicode_literals
 import itertools
 import json
 import os.path
 import itertools
 import json
 import os.path

+import random

 import re
 import time
 import traceback
 
 from .common import InfoExtractor, SearchInfoExtractor
 import re
 import time
 import traceback
 
 from .common import InfoExtractor, SearchInfoExtractor

-from .subtitles import SubtitlesInfoExtractor

 from ..jsinterp import JSInterpreter
 from ..swfinterp import SWFInterpreter
 from ..jsinterp import JSInterpreter
 from ..swfinterp import SWFInterpreter

-from ..utils import (
+from ..compat import (

     compat_chr,
     compat_chr,

+    compat_HTTPError,
+    compat_kwargs,

     compat_parse_qs,
     compat_parse_qs,

-    compat_urllib_parse,
-    compat_urllib_request,
+    compat_urllib_parse_unquote,
+    compat_urllib_parse_unquote_plus,
+    compat_urllib_parse_urlencode,
+    compat_urllib_parse_urlparse,

     compat_urlparse,
     compat_str,
     compat_urlparse,
     compat_str,

-
+)
+from ..utils import (

     clean_html,
     clean_html,

-    get_element_by_id,
-    get_element_by_attribute,
+    dict_get,
+    error_to_compat_str,

     ExtractorError,
     ExtractorError,

+    float_or_none,
+    get_element_by_attribute,
+    get_element_by_id,

     int_or_none,
     int_or_none,

-    OnDemandPagedList,
+    mimetype2ext,
+    orderedSet,
+    parse_codecs,
+    parse_duration,
+    qualities,
+    remove_quotes,
+    remove_start,
+    smuggle_url,
+    str_or_none,
+    str_to_int,
+    try_get,

     unescapeHTML,
     unified_strdate,
     unescapeHTML,
     unified_strdate,

-    orderedSet,
+    unsmuggle_url,

     uppercase_escape,
     uppercase_escape,

+    url_or_none,
+    urlencode_postdata,

 )
 
 
 class YoutubeBaseInfoExtractor(InfoExtractor):
     """Provide base functions for Youtube extractors"""
     _LOGIN_URL = 'https://accounts.google.com/ServiceLogin'
 )
 
 
 class YoutubeBaseInfoExtractor(InfoExtractor):
     """Provide base functions for Youtube extractors"""
     _LOGIN_URL = 'https://accounts.google.com/ServiceLogin'

-    _TWOFACTOR_URL = 'https://accounts.google.com/SecondFactor'
+    _TWOFACTOR_URL = 'https://accounts.google.com/signin/challenge'
+
+    _LOOKUP_URL = 'https://accounts.google.com/_/signin/sl/lookup'
+    _CHALLENGE_URL = 'https://accounts.google.com/_/signin/sl/challenge'
+    _TFA_URL = 'https://accounts.google.com/_/signin/challenge?hl=en&TL={0}'
+

     _NETRC_MACHINE = 'youtube'
     # If True it will raise an error if no login info is provided
     _LOGIN_REQUIRED = False
 
     _NETRC_MACHINE = 'youtube'
     # If True it will raise an error if no login info is provided
     _LOGIN_REQUIRED = False
 

+    _PLAYLIST_ID_RE = r'(?:PL|LL|EC|UU|FL|RD|UL|TL|OLAK5uy_)[0-9A-Za-z-_]{10,}'
+

     def _set_language(self):
     def _set_language(self):

-        self._set_cookie('.youtube.com', 'PREF', 'f1=50000000&hl=en',
+        self._set_cookie(
+            '.youtube.com', 'PREF', 'f1=50000000&hl=en',

             # YouTube sets the expire time to about two months
             # YouTube sets the expire time to about two months

-            expire_time=time.time() + 60*24*3600)
+            expire_time=time.time() + 2 * 30 * 24 * 3600)
+
+    def _ids_to_results(self, ids):
+        return [
+            self.url_result(vid_id, 'Youtube', video_id=vid_id)
+            for vid_id in ids]

 
     def _login(self):
         """
 
     def _login(self):
         """


@@ -56,10 +89,10 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
 
         If _LOGIN_REQUIRED is set and no authentication was provided, an error is raised.
         """
 
         If _LOGIN_REQUIRED is set and no authentication was provided, an error is raised.
         """

-        (username, password) = self._get_login_info()
+        username, password = self._get_login_info()

         # No authentication to be performed
         if username is None:
         # No authentication to be performed
         if username is None:

-            if self._LOGIN_REQUIRED:
+            if self._LOGIN_REQUIRED and self._downloader.params.get('cookiefile') is None:

                 raise ExtractorError('No login info available, needed for using %s.' % self.IE_NAME, expected=True)
             return True
 
                 raise ExtractorError('No login info available, needed for using %s.' % self.IE_NAME, expected=True)
             return True
 


@@ -70,110 +103,172 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
         if login_page is False:
             return
 
         if login_page is False:
             return
 

-        galx = self._search_regex(r'(?s)<input.+?name="GALX".+?value="(.+?)"',
-                                  login_page, 'Login GALX parameter')
-
-        # Log in
-        login_form_strs = {
-            'continue': 'https://www.youtube.com/signin?action_handle_signin=true&feature=sign_in_button&hl=en_US&nomobiletemp=1',
-            'Email': username,
-            'GALX': galx,
-            'Passwd': password,
-
-            'PersistentCookie': 'yes',
-            '_utf8': '霱',
-            'bgresponse': 'js_disabled',
-            'checkConnection': '',
-            'checkedDomains': 'youtube',
-            'dnConn': '',
-            'pstMsg': '0',
-            'rmShown': '1',
-            'secTok': '',
-            'signIn': 'Sign in',
-            'timeStmp': '',
-            'service': 'youtube',
-            'uilel': '3',
-            'hl': 'en_US',
-        }
+        login_form = self._hidden_inputs(login_page)
+
+        def req(url, f_req, note, errnote):
+            data = login_form.copy()
+            data.update({
+                'pstMsg': 1,
+                'checkConnection': 'youtube',
+                'checkedDomains': 'youtube',
+                'hl': 'en',
+                'deviceinfo': '[null,null,null,[],null,"US",null,null,[],"GlifWebSignIn",null,[null,null,[]]]',
+                'f.req': json.dumps(f_req),
+                'flowName': 'GlifWebSignIn',
+                'flowEntry': 'ServiceLogin',
+            })
+            return self._download_json(
+                url, None, note=note, errnote=errnote,
+                transform_source=lambda s: re.sub(r'^[^[]*', '', s),
+                fatal=False,
+                data=urlencode_postdata(data), headers={
+                    'Content-Type': 'application/x-www-form-urlencoded;charset=utf-8',
+                    'Google-Accounts-XSRF': 1,
+                })
+
+        def warn(message):
+            self._downloader.report_warning(message)
+
+        lookup_req = [
+            username,
+            None, [], None, 'US', None, None, 2, False, True,
+            [
+                None, None,
+                [2, 1, None, 1,
+                 'https://accounts.google.com/ServiceLogin?passive=true&continue=https%3A%2F%2Fwww.youtube.com%2Fsignin%3Fnext%3D%252F%26action_handle_signin%3Dtrue%26hl%3Den%26app%3Ddesktop%26feature%3Dsign_in_button&hl=en&service=youtube&uilel=3&requestPath=%2FServiceLogin&Page=PasswordSeparationSignIn',
+                 None, [], 4],
+                1, [None, None, []], None, None, None, True
+            ],
+            username,
+        ]

 
 

-        # Convert to UTF-8 *before* urlencode because Python 2.x's urlencode
-        # chokes on unicode
-        login_form = dict((k.encode('utf-8'), v.encode('utf-8')) for k, v in login_form_strs.items())
-        login_data = compat_urllib_parse.urlencode(login_form).encode('ascii')
+        lookup_results = req(
+            self._LOOKUP_URL, lookup_req,
+            'Looking up account info', 'Unable to look up account info')

 
 

-        req = compat_urllib_request.Request(self._LOGIN_URL, login_data)
-        login_results = self._download_webpage(
-            req, None,
-            note='Logging in', errnote='unable to log in', fatal=False)
-        if login_results is False:
+        if lookup_results is False:

             return False
 
             return False
 

-        if re.search(r'id="errormsg_0_Passwd"', login_results) is not None:
-            raise ExtractorError('Please use your account password and a two-factor code instead of an application-specific password.', expected=True)
+        user_hash = try_get(lookup_results, lambda x: x[0][2], compat_str)
+        if not user_hash:
+            warn('Unable to extract user hash')
+            return False

 
 

-        # Two-Factor
-        # TODO add SMS and phone call support - these require making a request and then prompting the user
+        challenge_req = [
+            user_hash,
+            None, 1, None, [1, None, None, None, [password, None, True]],
+            [
+                None, None, [2, 1, None, 1, 'https://accounts.google.com/ServiceLogin?passive=true&continue=https%3A%2F%2Fwww.youtube.com%2Fsignin%3Fnext%3D%252F%26action_handle_signin%3Dtrue%26hl%3Den%26app%3Ddesktop%26feature%3Dsign_in_button&hl=en&service=youtube&uilel=3&requestPath=%2FServiceLogin&Page=PasswordSeparationSignIn', None, [], 4],
+                1, [None, None, []], None, None, None, True
+            ]]

 
 

-        if re.search(r'(?i)<form[^>]* id="gaia_secondfactorform"', login_results) is not None:
-            tfa_code = self._get_tfa_info()
+        challenge_results = req(
+            self._CHALLENGE_URL, challenge_req,
+            'Logging in', 'Unable to log in')

 
 

-            if tfa_code is None:
-                self._downloader.report_warning('Two-factor authentication required. Provide it with --twofactor <code>')
-                self._downloader.report_warning('(Note that only TOTP (Google Authenticator App) codes work at this time.)')
-                return False
+        if challenge_results is False:
+            return

 
 

-            # Unlike the first login form, secTok and timeStmp are both required for the TFA form
-
-            match = re.search(r'id="secTok"\n\s+value=\'(.+)\'/>', login_results, re.M | re.U)
-            if match is None:
-                self._downloader.report_warning('Failed to get secTok - did the page structure change?')
-            secTok = match.group(1)
-            match = re.search(r'id="timeStmp"\n\s+value=\'(.+)\'/>', login_results, re.M | re.U)
-            if match is None:
-                self._downloader.report_warning('Failed to get timeStmp - did the page structure change?')
-            timeStmp = match.group(1)
-
-            tfa_form_strs = {
-                'continue': 'https://www.youtube.com/signin?action_handle_signin=true&feature=sign_in_button&hl=en_US&nomobiletemp=1',
-                'smsToken': '',
-                'smsUserPin': tfa_code,
-                'smsVerifyPin': 'Verify',
-
-                'PersistentCookie': 'yes',
-                'checkConnection': '',
-                'checkedDomains': 'youtube',
-                'pstMsg': '1',
-                'secTok': secTok,
-                'timeStmp': timeStmp,
-                'service': 'youtube',
-                'hl': 'en_US',
-            }
-            tfa_form = dict((k.encode('utf-8'), v.encode('utf-8')) for k, v in tfa_form_strs.items())
-            tfa_data = compat_urllib_parse.urlencode(tfa_form).encode('ascii')
+        login_res = try_get(challenge_results, lambda x: x[0][5], list)
+        if login_res:
+            login_msg = try_get(login_res, lambda x: x[5], compat_str)
+            warn(
+                'Unable to login: %s' % 'Invalid password'
+                if login_msg == 'INCORRECT_ANSWER_ENTERED' else login_msg)
+            return False

 
 

-            tfa_req = compat_urllib_request.Request(self._TWOFACTOR_URL, tfa_data)
-            tfa_results = self._download_webpage(
-                tfa_req, None,
-                note='Submitting TFA code', errnote='unable to submit tfa', fatal=False)
+        res = try_get(challenge_results, lambda x: x[0][-1], list)
+        if not res:
+            warn('Unable to extract result entry')
+            return False

 
 

-            if tfa_results is False:
+        login_challenge = try_get(res, lambda x: x[0][0], list)
+        if login_challenge:
+            challenge_str = try_get(login_challenge, lambda x: x[2], compat_str)
+            if challenge_str == 'TWO_STEP_VERIFICATION':
+                # SEND_SUCCESS - TFA code has been successfully sent to phone
+                # QUOTA_EXCEEDED - reached the limit of TFA codes
+                status = try_get(login_challenge, lambda x: x[5], compat_str)
+                if status == 'QUOTA_EXCEEDED':
+                    warn('Exceeded the limit of TFA codes, try later')
+                    return False
+
+                tl = try_get(challenge_results, lambda x: x[1][2], compat_str)
+                if not tl:
+                    warn('Unable to extract TL')
+                    return False
+
+                tfa_code = self._get_tfa_info('2-step verification code')
+
+                if not tfa_code:
+                    warn(
+                        'Two-factor authentication required. Provide it either interactively or with --twofactor <code>'
+                        '(Note that only TOTP (Google Authenticator App) codes work at this time.)')
+                    return False
+
+                tfa_code = remove_start(tfa_code, 'G-')
+
+                tfa_req = [
+                    user_hash, None, 2, None,
+                    [
+                        9, None, None, None, None, None, None, None,
+                        [None, tfa_code, True, 2]
+                    ]]
+
+                tfa_results = req(
+                    self._TFA_URL.format(tl), tfa_req,
+                    'Submitting TFA code', 'Unable to submit TFA code')
+
+                if tfa_results is False:
+                    return False
+
+                tfa_res = try_get(tfa_results, lambda x: x[0][5], list)
+                if tfa_res:
+                    tfa_msg = try_get(tfa_res, lambda x: x[5], compat_str)
+                    warn(
+                        'Unable to finish TFA: %s' % 'Invalid TFA code'
+                        if tfa_msg == 'INCORRECT_ANSWER_ENTERED' else tfa_msg)
+                    return False
+
+                check_cookie_url = try_get(
+                    tfa_results, lambda x: x[0][-1][2], compat_str)
+            else:
+                CHALLENGES = {
+                    'LOGIN_CHALLENGE': "This device isn't recognized. For your security, Google wants to make sure it's really you.",
+                    'USERNAME_RECOVERY': 'Please provide additional information to aid in the recovery process.',
+                    'REAUTH': "There is something unusual about your activity. For your security, Google wants to make sure it's really you.",
+                }
+                challenge = CHALLENGES.get(
+                    challenge_str,
+                    '%s returned error %s.' % (self.IE_NAME, challenge_str))
+                warn('%s\nGo to https://accounts.google.com/, login and solve a challenge.' % challenge)

                 return False
                 return False

+        else:
+            check_cookie_url = try_get(res, lambda x: x[2], compat_str)

 
 

-            if re.search(r'(?i)<form[^>]* id="gaia_secondfactorform"', tfa_results) is not None:
-                self._downloader.report_warning('Two-factor code expired. Please try again, or use a one-use backup code instead.')
-                return False
-            if re.search(r'(?i)<form[^>]* id="gaia_loginform"', tfa_results) is not None:
-                self._downloader.report_warning('unable to log in - did the page structure change?')
-                return False
-            if re.search(r'smsauth-interstitial-reviewsettings', tfa_results) is not None:
-                self._downloader.report_warning('Your Google account has a security notice. Please log in on your web browser, resolve the notice, and try again.')
-                return False
+        if not check_cookie_url:
+            warn('Unable to extract CheckCookie URL')
+            return False
+
+        check_cookie_results = self._download_webpage(
+            check_cookie_url, None, 'Checking cookie', fatal=False)

 
 

-        if re.search(r'(?i)<form[^>]* id="gaia_loginform"', login_results) is not None:
-            self._downloader.report_warning('unable to log in: bad username or password')
+        if check_cookie_results is False:

             return False
             return False

+
+        if 'https://myaccount.google.com/' not in check_cookie_results:
+            warn('Unable to log in')
+            return False
+

         return True
 
         return True
 

+    def _download_webpage_handle(self, *args, **kwargs):
+        query = kwargs.get('query', {}).copy()
+        query['disable_polymer'] = 'true'
+        kwargs['query'] = query
+        return super(YoutubeBaseInfoExtractor, self)._download_webpage_handle(
+            *args, **compat_kwargs(kwargs))
+

     def _real_initialize(self):
         if self._downloader is None:
             return
     def _real_initialize(self):
         if self._downloader is None:
             return


@@ -182,7 +277,87 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
             return
 
 
             return
 
 

-class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
+class YoutubeEntryListBaseInfoExtractor(YoutubeBaseInfoExtractor):
+    # Extract entries from page with "Load more" button
+    def _entries(self, page, playlist_id):
+        more_widget_html = content_html = page
+        for page_num in itertools.count(1):
+            for entry in self._process_page(content_html):
+                yield entry
+
+            mobj = re.search(r'data-uix-load-more-href="/?(?P<more>[^"]+)"', more_widget_html)
+            if not mobj:
+                break
+
+            count = 0
+            retries = 3
+            while count <= retries:
+                try:
+                    # Downloading page may result in intermittent 5xx HTTP error
+                    # that is usually worked around with a retry
+                    more = self._download_json(
+                        'https://youtube.com/%s' % mobj.group('more'), playlist_id,
+                        'Downloading page #%s%s'
+                        % (page_num, ' (retry #%d)' % count if count else ''),
+                        transform_source=uppercase_escape)
+                    break
+                except ExtractorError as e:
+                    if isinstance(e.cause, compat_HTTPError) and e.cause.code in (500, 503):
+                        count += 1
+                        if count <= retries:
+                            continue
+                    raise
+
+            content_html = more['content_html']
+            if not content_html.strip():
+                # Some webpages show a "Load more" button but they don't
+                # have more videos
+                break
+            more_widget_html = more['load_more_widget_html']
+
+
+class YoutubePlaylistBaseInfoExtractor(YoutubeEntryListBaseInfoExtractor):
+    def _process_page(self, content):
+        for video_id, video_title in self.extract_videos_from_page(content):
+            yield self.url_result(video_id, 'Youtube', video_id, video_title)
+
+    def extract_videos_from_page(self, page):
+        ids_in_page = []
+        titles_in_page = []
+        for mobj in re.finditer(self._VIDEO_RE, page):
+            # The link with index 0 is not the first video of the playlist (not sure if still actual)
+            if 'index' in mobj.groupdict() and mobj.group('id') == '0':
+                continue
+            video_id = mobj.group('id')
+            video_title = unescapeHTML(mobj.group('title'))
+            if video_title:
+                video_title = video_title.strip()
+            try:
+                idx = ids_in_page.index(video_id)
+                if video_title and not titles_in_page[idx]:
+                    titles_in_page[idx] = video_title
+            except ValueError:
+                ids_in_page.append(video_id)
+                titles_in_page.append(video_title)
+        return zip(ids_in_page, titles_in_page)
+
+
+class YoutubePlaylistsBaseInfoExtractor(YoutubeEntryListBaseInfoExtractor):
+    def _process_page(self, content):
+        for playlist_id in orderedSet(re.findall(
+                r'<h3[^>]+class="[^"]*yt-lockup-title[^"]*"[^>]*><a[^>]+href="/?playlist\?list=([0-9A-Za-z-_]{10,})"',
+                content)):
+            yield self.url_result(
+                'https://www.youtube.com/playlist?list=%s' % playlist_id, 'YoutubePlaylist')
+
+    def _real_extract(self, url):
+        playlist_id = self._match_id(url)
+        webpage = self._download_webpage(url, playlist_id)
+        title = self._og_search_title(webpage, fatal=False)
+        return self.playlist_result(self._entries(webpage, playlist_id), playlist_id, title)
+
+
+class YoutubeIE(YoutubeBaseInfoExtractor):

     IE_DESC = 'YouTube.com'
     _VALID_URL = r"""(?x)^
                      (
     IE_DESC = 'YouTube.com'
     _VALID_URL = r"""(?x)^
                      (


@@ -190,8 +365,14 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
                          (?:(?:(?:(?:\w+\.)?[yY][oO][uU][tT][uU][bB][eE](?:-nocookie)?\.com/|
                             (?:www\.)?deturl\.com/www\.youtube\.com/|
                             (?:www\.)?pwnyoutube\.com/|
                          (?:(?:(?:(?:\w+\.)?[yY][oO][uU][tT][uU][bB][eE](?:-nocookie)?\.com/|
                             (?:www\.)?deturl\.com/www\.youtube\.com/|
                             (?:www\.)?pwnyoutube\.com/|

+                            (?:www\.)?hooktube\.com/|

                             (?:www\.)?yourepeat\.com/|
                             tube\.majestyc\.net/|
                             (?:www\.)?yourepeat\.com/|
                             tube\.majestyc\.net/|

+                            (?:(?:www|dev)\.)?invidio\.us/|
+                            (?:www\.)?invidiou\.sh/|
+                            (?:www\.)?invidious\.snopyta\.org/|
+                            (?:www\.)?invidious\.kabi\.tk/|
+                            (?:www\.)?vid\.wxzm\.sx/|

                             youtube\.googleapis\.com/)                        # the various hostnames, with wildcard subdomains
                          (?:.*?\#/)?                                          # handle anchor (#/) redirect urls
                          (?:                                                  # the various things that can precede the ID:
                             youtube\.googleapis\.com/)                        # the various hostnames, with wildcard subdomains
                          (?:.*?\#/)?                                          # handle anchor (#/) redirect urls
                          (?:                                                  # the various things that can precede the ID:


@@ -199,135 +380,176 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
                              |(?:                                             # or the v= param in all its forms
                                  (?:(?:watch|movie)(?:_popup)?(?:\.php)?/?)?  # preceding watch(_popup|.php) or nothing (like /?v=xxxx)
                                  (?:\?|\#!?)                                  # the params delimiter ? or # or #!
                              |(?:                                             # or the v= param in all its forms
                                  (?:(?:watch|movie)(?:_popup)?(?:\.php)?/?)?  # preceding watch(_popup|.php) or nothing (like /?v=xxxx)
                                  (?:\?|\#!?)                                  # the params delimiter ? or # or #!

-                                 (?:.*?&)?                                    # any other preceding param (like /?s=tuff&v=xxxx)
+                                 (?:.*?[&;])??                                # any other preceding param (like /?s=tuff&v=xxxx or ?s=tuff&amp;v=V36LpHqtcDY)

                                  v=
                              )
                          ))
                                  v=
                              )
                          ))

-                         |youtu\.be/                                          # just youtu.be/xxxx
+                         |(?:
+                            youtu\.be|                                        # just youtu.be/xxxx
+                            vid\.plus|                                        # or vid.plus/xxxx
+                            zwearz\.com/watch|                                # or zwearz.com/watch/xxxx
+                         )/

                          |(?:www\.)?cleanvideosearch\.com/media/action/yt/watch\?videoId=
                          )
                      )?                                                       # all until now is optional -> you can pass the naked ID
                      ([0-9A-Za-z_-]{11})                                      # here is it! the YouTube video ID
                          |(?:www\.)?cleanvideosearch\.com/media/action/yt/watch\?videoId=
                          )
                      )?                                                       # all until now is optional -> you can pass the naked ID
                      ([0-9A-Za-z_-]{11})                                      # here is it! the YouTube video ID

-                     (?!.*?&list=)                                            # combined list/video URLs are handled by the playlist IE
+                     (?!.*?\blist=
+                        (?:
+                            %(playlist_id)s|                                  # combined list/video URLs are handled by the playlist IE
+                            WL                                                # WL are handled by the watch later IE
+                        )
+                     )

                      (?(1).+)?                                                # if we found the ID, everything can follow
                      (?(1).+)?                                                # if we found the ID, everything can follow

-                     $"""
+                     $""" % {'playlist_id': YoutubeBaseInfoExtractor._PLAYLIST_ID_RE}

     _NEXT_URL_RE = r'[\?&]next_url=([^&]+)'
     _formats = {
     _NEXT_URL_RE = r'[\?&]next_url=([^&]+)'
     _formats = {

-        '5': {'ext': 'flv', 'width': 400, 'height': 240},
-        '6': {'ext': 'flv', 'width': 450, 'height': 270},
-        '13': {'ext': '3gp'},
-        '17': {'ext': '3gp', 'width': 176, 'height': 144},
-        '18': {'ext': 'mp4', 'width': 640, 'height': 360},
-        '22': {'ext': 'mp4', 'width': 1280, 'height': 720},
-        '34': {'ext': 'flv', 'width': 640, 'height': 360},
-        '35': {'ext': 'flv', 'width': 854, 'height': 480},
-        '36': {'ext': '3gp', 'width': 320, 'height': 240},
-        '37': {'ext': 'mp4', 'width': 1920, 'height': 1080},
-        '38': {'ext': 'mp4', 'width': 4096, 'height': 3072},
-        '43': {'ext': 'webm', 'width': 640, 'height': 360},
-        '44': {'ext': 'webm', 'width': 854, 'height': 480},
-        '45': {'ext': 'webm', 'width': 1280, 'height': 720},
-        '46': {'ext': 'webm', 'width': 1920, 'height': 1080},
-
-
-        # 3d videos
-        '82': {'ext': 'mp4', 'height': 360, 'format_note': '3D', 'preference': -20},
-        '83': {'ext': 'mp4', 'height': 480, 'format_note': '3D', 'preference': -20},
-        '84': {'ext': 'mp4', 'height': 720, 'format_note': '3D', 'preference': -20},
-        '85': {'ext': 'mp4', 'height': 1080, 'format_note': '3D', 'preference': -20},
-        '100': {'ext': 'webm', 'height': 360, 'format_note': '3D', 'preference': -20},
-        '101': {'ext': 'webm', 'height': 480, 'format_note': '3D', 'preference': -20},
-        '102': {'ext': 'webm', 'height': 720, 'format_note': '3D', 'preference': -20},
+        '5': {'ext': 'flv', 'width': 400, 'height': 240, 'acodec': 'mp3', 'abr': 64, 'vcodec': 'h263'},
+        '6': {'ext': 'flv', 'width': 450, 'height': 270, 'acodec': 'mp3', 'abr': 64, 'vcodec': 'h263'},
+        '13': {'ext': '3gp', 'acodec': 'aac', 'vcodec': 'mp4v'},
+        '17': {'ext': '3gp', 'width': 176, 'height': 144, 'acodec': 'aac', 'abr': 24, 'vcodec': 'mp4v'},
+        '18': {'ext': 'mp4', 'width': 640, 'height': 360, 'acodec': 'aac', 'abr': 96, 'vcodec': 'h264'},
+        '22': {'ext': 'mp4', 'width': 1280, 'height': 720, 'acodec': 'aac', 'abr': 192, 'vcodec': 'h264'},
+        '34': {'ext': 'flv', 'width': 640, 'height': 360, 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264'},
+        '35': {'ext': 'flv', 'width': 854, 'height': 480, 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264'},
+        # itag 36 videos are either 320x180 (BaW_jenozKc) or 320x240 (__2ABJjxzNo), abr varies as well
+        '36': {'ext': '3gp', 'width': 320, 'acodec': 'aac', 'vcodec': 'mp4v'},
+        '37': {'ext': 'mp4', 'width': 1920, 'height': 1080, 'acodec': 'aac', 'abr': 192, 'vcodec': 'h264'},
+        '38': {'ext': 'mp4', 'width': 4096, 'height': 3072, 'acodec': 'aac', 'abr': 192, 'vcodec': 'h264'},
+        '43': {'ext': 'webm', 'width': 640, 'height': 360, 'acodec': 'vorbis', 'abr': 128, 'vcodec': 'vp8'},
+        '44': {'ext': 'webm', 'width': 854, 'height': 480, 'acodec': 'vorbis', 'abr': 128, 'vcodec': 'vp8'},
+        '45': {'ext': 'webm', 'width': 1280, 'height': 720, 'acodec': 'vorbis', 'abr': 192, 'vcodec': 'vp8'},
+        '46': {'ext': 'webm', 'width': 1920, 'height': 1080, 'acodec': 'vorbis', 'abr': 192, 'vcodec': 'vp8'},
+        '59': {'ext': 'mp4', 'width': 854, 'height': 480, 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264'},
+        '78': {'ext': 'mp4', 'width': 854, 'height': 480, 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264'},
+
+
+        # 3D videos
+        '82': {'ext': 'mp4', 'height': 360, 'format_note': '3D', 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264', 'preference': -20},
+        '83': {'ext': 'mp4', 'height': 480, 'format_note': '3D', 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264', 'preference': -20},
+        '84': {'ext': 'mp4', 'height': 720, 'format_note': '3D', 'acodec': 'aac', 'abr': 192, 'vcodec': 'h264', 'preference': -20},
+        '85': {'ext': 'mp4', 'height': 1080, 'format_note': '3D', 'acodec': 'aac', 'abr': 192, 'vcodec': 'h264', 'preference': -20},
+        '100': {'ext': 'webm', 'height': 360, 'format_note': '3D', 'acodec': 'vorbis', 'abr': 128, 'vcodec': 'vp8', 'preference': -20},
+        '101': {'ext': 'webm', 'height': 480, 'format_note': '3D', 'acodec': 'vorbis', 'abr': 192, 'vcodec': 'vp8', 'preference': -20},
+        '102': {'ext': 'webm', 'height': 720, 'format_note': '3D', 'acodec': 'vorbis', 'abr': 192, 'vcodec': 'vp8', 'preference': -20},

 
         # Apple HTTP Live Streaming
 
         # Apple HTTP Live Streaming

-        '92': {'ext': 'mp4', 'height': 240, 'format_note': 'HLS', 'preference': -10},
-        '93': {'ext': 'mp4', 'height': 360, 'format_note': 'HLS', 'preference': -10},
-        '94': {'ext': 'mp4', 'height': 480, 'format_note': 'HLS', 'preference': -10},
-        '95': {'ext': 'mp4', 'height': 720, 'format_note': 'HLS', 'preference': -10},
-        '96': {'ext': 'mp4', 'height': 1080, 'format_note': 'HLS', 'preference': -10},
-        '132': {'ext': 'mp4', 'height': 240, 'format_note': 'HLS', 'preference': -10},
-        '151': {'ext': 'mp4', 'height': 72, 'format_note': 'HLS', 'preference': -10},
+        '91': {'ext': 'mp4', 'height': 144, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 48, 'vcodec': 'h264', 'preference': -10},
+        '92': {'ext': 'mp4', 'height': 240, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 48, 'vcodec': 'h264', 'preference': -10},
+        '93': {'ext': 'mp4', 'height': 360, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264', 'preference': -10},
+        '94': {'ext': 'mp4', 'height': 480, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264', 'preference': -10},
+        '95': {'ext': 'mp4', 'height': 720, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 256, 'vcodec': 'h264', 'preference': -10},
+        '96': {'ext': 'mp4', 'height': 1080, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 256, 'vcodec': 'h264', 'preference': -10},
+        '132': {'ext': 'mp4', 'height': 240, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 48, 'vcodec': 'h264', 'preference': -10},
+        '151': {'ext': 'mp4', 'height': 72, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 24, 'vcodec': 'h264', 'preference': -10},

 
         # DASH mp4 video
 
         # DASH mp4 video

-        '133': {'ext': 'mp4', 'height': 240, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '134': {'ext': 'mp4', 'height': 360, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '135': {'ext': 'mp4', 'height': 480, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '136': {'ext': 'mp4', 'height': 720, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '137': {'ext': 'mp4', 'height': 1080, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '138': {'ext': 'mp4', 'height': 2160, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '160': {'ext': 'mp4', 'height': 144, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '264': {'ext': 'mp4', 'height': 1440, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '298': {'ext': 'mp4', 'height': 720, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40, 'fps': 60, 'vcodec': 'h264'},
-        '299': {'ext': 'mp4', 'height': 1080, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40, 'fps': 60, 'vcodec': 'h264'},
-        '266': {'ext': 'mp4', 'height': 2160, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40, 'vcodec': 'h264'},
+        '133': {'ext': 'mp4', 'height': 240, 'format_note': 'DASH video', 'vcodec': 'h264'},
+        '134': {'ext': 'mp4', 'height': 360, 'format_note': 'DASH video', 'vcodec': 'h264'},
+        '135': {'ext': 'mp4', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'h264'},
+        '136': {'ext': 'mp4', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'h264'},
+        '137': {'ext': 'mp4', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'h264'},
+        '138': {'ext': 'mp4', 'format_note': 'DASH video', 'vcodec': 'h264'},  # Height can vary (https://github.com/ytdl-org/youtube-dl/issues/4559)
+        '160': {'ext': 'mp4', 'height': 144, 'format_note': 'DASH video', 'vcodec': 'h264'},
+        '212': {'ext': 'mp4', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'h264'},
+        '264': {'ext': 'mp4', 'height': 1440, 'format_note': 'DASH video', 'vcodec': 'h264'},
+        '298': {'ext': 'mp4', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'h264', 'fps': 60},
+        '299': {'ext': 'mp4', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'h264', 'fps': 60},
+        '266': {'ext': 'mp4', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'h264'},

 
         # Dash mp4 audio
 
         # Dash mp4 audio

-        '139': {'ext': 'm4a', 'format_note': 'DASH audio', 'vcodec': 'none', 'abr': 48, 'preference': -50},
-        '140': {'ext': 'm4a', 'format_note': 'DASH audio', 'vcodec': 'none', 'abr': 128, 'preference': -50},
-        '141': {'ext': 'm4a', 'format_note': 'DASH audio', 'vcodec': 'none', 'abr': 256, 'preference': -50},
+        '139': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'abr': 48, 'container': 'm4a_dash'},
+        '140': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'abr': 128, 'container': 'm4a_dash'},
+        '141': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'abr': 256, 'container': 'm4a_dash'},
+        '256': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'container': 'm4a_dash'},
+        '258': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'container': 'm4a_dash'},
+        '325': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'dtse', 'container': 'm4a_dash'},
+        '328': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'ec-3', 'container': 'm4a_dash'},

 
         # Dash webm
 
         # Dash webm

-        '167': {'ext': 'webm', 'height': 360, 'width': 640, 'format_note': 'DASH video', 'acodec': 'none', 'container': 'webm', 'vcodec': 'VP8', 'preference': -40},
-        '168': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'acodec': 'none', 'container': 'webm', 'vcodec': 'VP8', 'preference': -40},
-        '169': {'ext': 'webm', 'height': 720, 'width': 1280, 'format_note': 'DASH video', 'acodec': 'none', 'container': 'webm', 'vcodec': 'VP8', 'preference': -40},
-        '170': {'ext': 'webm', 'height': 1080, 'width': 1920, 'format_note': 'DASH video', 'acodec': 'none', 'container': 'webm', 'vcodec': 'VP8', 'preference': -40},
-        '218': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'acodec': 'none', 'container': 'webm', 'vcodec': 'VP8', 'preference': -40},
-        '219': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'acodec': 'none', 'container': 'webm', 'vcodec': 'VP8', 'preference': -40},
-        '278': {'ext': 'webm', 'height': 144, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40, 'container': 'webm', 'vcodec': 'VP9'},
-        '242': {'ext': 'webm', 'height': 240, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '243': {'ext': 'webm', 'height': 360, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '244': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '245': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '246': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '247': {'ext': 'webm', 'height': 720, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '248': {'ext': 'webm', 'height': 1080, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '271': {'ext': 'webm', 'height': 1440, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '272': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},
-        '302': {'ext': 'webm', 'height': 720, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40, 'fps': 60, 'vcodec': 'VP9'},
-        '303': {'ext': 'webm', 'height': 1080, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40, 'fps': 60, 'vcodec': 'VP9'},
-        '313': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40, 'vcodec': 'VP9'},
+        '167': {'ext': 'webm', 'height': 360, 'width': 640, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
+        '168': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
+        '169': {'ext': 'webm', 'height': 720, 'width': 1280, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
+        '170': {'ext': 'webm', 'height': 1080, 'width': 1920, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
+        '218': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
+        '219': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
+        '278': {'ext': 'webm', 'height': 144, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp9'},
+        '242': {'ext': 'webm', 'height': 240, 'format_note': 'DASH video', 'vcodec': 'vp9'},
+        '243': {'ext': 'webm', 'height': 360, 'format_note': 'DASH video', 'vcodec': 'vp9'},
+        '244': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'vp9'},
+        '245': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'vp9'},
+        '246': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'vp9'},
+        '247': {'ext': 'webm', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'vp9'},
+        '248': {'ext': 'webm', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'vp9'},
+        '271': {'ext': 'webm', 'height': 1440, 'format_note': 'DASH video', 'vcodec': 'vp9'},
+        # itag 272 videos are either 3840x2160 (e.g. RtoitU2A-3E) or 7680x4320 (sLprVF6d7Ug)
+        '272': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'vp9'},
+        '302': {'ext': 'webm', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60},
+        '303': {'ext': 'webm', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60},
+        '308': {'ext': 'webm', 'height': 1440, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60},
+        '313': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'vp9'},
+        '315': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60},

 
         # Dash webm audio
 
         # Dash webm audio

-        '171': {'ext': 'webm', 'vcodec': 'none', 'format_note': 'DASH audio', 'abr': 128, 'preference': -50},
-        '172': {'ext': 'webm', 'vcodec': 'none', 'format_note': 'DASH audio', 'abr': 256, 'preference': -50},
+        '171': {'ext': 'webm', 'acodec': 'vorbis', 'format_note': 'DASH audio', 'abr': 128},
+        '172': {'ext': 'webm', 'acodec': 'vorbis', 'format_note': 'DASH audio', 'abr': 256},

 
         # Dash webm audio with opus inside
 
         # Dash webm audio with opus inside

-        '249': {'ext': 'webm', 'vcodec': 'none', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 50, 'preference': -50},
-        '250': {'ext': 'webm', 'vcodec': 'none', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 70, 'preference': -50},
-        '251': {'ext': 'webm', 'vcodec': 'none', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 160, 'preference': -50},
+        '249': {'ext': 'webm', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 50},
+        '250': {'ext': 'webm', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 70},
+        '251': {'ext': 'webm', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 160},

 
         # RTMP (unnamed)
         '_rtmp': {'protocol': 'rtmp'},
     }
 
         # RTMP (unnamed)
         '_rtmp': {'protocol': 'rtmp'},
     }

+    _SUBTITLE_FORMATS = ('srv1', 'srv2', 'srv3', 'ttml', 'vtt')
+
+    _GEO_BYPASS = False

 
     IE_NAME = 'youtube'
     _TESTS = [
         {
 
     IE_NAME = 'youtube'
     _TESTS = [
         {

-            'url': 'http://www.youtube.com/watch?v=BaW_jenozKc',
+            'url': 'https://www.youtube.com/watch?v=BaW_jenozKc&t=1s&end=9',

             'info_dict': {
                 'id': 'BaW_jenozKc',
                 'ext': 'mp4',
                 'title': 'youtube-dl test video "\'/\\ä↭𝕐',
                 'uploader': 'Philipp Hagemeister',
                 'uploader_id': 'phihag',
             'info_dict': {
                 'id': 'BaW_jenozKc',
                 'ext': 'mp4',
                 'title': 'youtube-dl test video "\'/\\ä↭𝕐',
                 'uploader': 'Philipp Hagemeister',
                 'uploader_id': 'phihag',

+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/phihag',
+                'channel_id': 'UCLqxVugv74EIW3VWh2NOa3Q',
+                'channel_url': r're:https?://(?:www\.)?youtube\.com/channel/UCLqxVugv74EIW3VWh2NOa3Q',

                 'upload_date': '20121002',
                 'description': 'test chars:  "\'/\\ä↭𝕐\ntest URL: https://github.com/rg3/youtube-dl/issues/1892\n\nThis is a test video for youtube-dl.\n\nFor more information, contact phihag@phihag.de .',
                 'categories': ['Science & Technology'],
                 'upload_date': '20121002',
                 'description': 'test chars:  "\'/\\ä↭𝕐\ntest URL: https://github.com/rg3/youtube-dl/issues/1892\n\nThis is a test video for youtube-dl.\n\nFor more information, contact phihag@phihag.de .',
                 'categories': ['Science & Technology'],

+                'tags': ['youtube-dl'],
+                'duration': 10,
+                'view_count': int,

                 'like_count': int,
                 'dislike_count': int,
                 'like_count': int,
                 'dislike_count': int,

+                'start_time': 1,
+                'end_time': 9,

             }
         },
         {
             }
         },
         {

-            'url': 'http://www.youtube.com/watch?v=UxxajLWwzqY',
+            'url': 'https://www.youtube.com/watch?v=UxxajLWwzqY',

             'note': 'Test generic use_cipher_signature video (#897)',
             'info_dict': {
                 'id': 'UxxajLWwzqY',
                 'ext': 'mp4',
                 'upload_date': '20120506',
                 'title': 'Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO]',
             'note': 'Test generic use_cipher_signature video (#897)',
             'info_dict': {
                 'id': 'UxxajLWwzqY',
                 'ext': 'mp4',
                 'upload_date': '20120506',
                 'title': 'Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO]',

-                'description': 'md5:fea86fda2d5a5784273df5c7cc994d9f',
+                'alt_title': 'I Love It (feat. Charli XCX)',
+                'description': 'md5:f3ceb5ef83a08d95b9d146f973157cc8',
+                'tags': ['Icona Pop i love it', 'sweden', 'pop music', 'big beat records', 'big beat', 'charli',
+                         'xcx', 'charli xcx', 'girls', 'hbo', 'i love it', "i don't care", 'icona', 'pop',
+                         'iconic ep', 'iconic', 'love', 'it'],
+                'duration': 180,

                 'uploader': 'Icona Pop',
                 'uploader_id': 'IconaPop',
                 'uploader': 'Icona Pop',
                 'uploader_id': 'IconaPop',

+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/IconaPop',
+                'creator': 'Icona Pop',
+                'track': 'I Love It (feat. Charli XCX)',
+                'artist': 'Icona Pop',

             }
         },
         {
             }
         },
         {


@@ -337,10 +559,17 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
                 'id': '07FYdnEawAQ',
                 'ext': 'mp4',
                 'upload_date': '20130703',
                 'id': '07FYdnEawAQ',
                 'ext': 'mp4',
                 'upload_date': '20130703',

-                'title': 'Justin Timberlake - Tunnel Vision (Explicit)',
-                'description': 'md5:64249768eec3bc4276236606ea996373',
+                'title': 'Justin Timberlake - Tunnel Vision (Official Music Video) (Explicit)',
+                'alt_title': 'Tunnel Vision',
+                'description': 'md5:07dab3356cde4199048e4c7cd93471e1',
+                'duration': 419,

                 'uploader': 'justintimberlakeVEVO',
                 'uploader_id': 'justintimberlakeVEVO',
                 'uploader': 'justintimberlakeVEVO',
                 'uploader_id': 'justintimberlakeVEVO',

+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/justintimberlakeVEVO',
+                'creator': 'Justin Timberlake',
+                'track': 'Tunnel Vision',
+                'artist': 'Justin Timberlake',
+                'age_limit': 18,

             }
         },
         {
             }
         },
         {


@@ -353,17 +582,43 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
                 'title': 'Principal Sexually Assaults A Teacher - Episode 117 - 8th June 2012',
                 'description': 'md5:09b78bd971f1e3e289601dfba15ca4f7',
                 'uploader': 'SET India',
                 'title': 'Principal Sexually Assaults A Teacher - Episode 117 - 8th June 2012',
                 'description': 'md5:09b78bd971f1e3e289601dfba15ca4f7',
                 'uploader': 'SET India',

-                'uploader_id': 'setindia'
+                'uploader_id': 'setindia',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/setindia',
+                'age_limit': 18,

             }
         },
         {
             }
         },
         {

-            'url': 'http://www.youtube.com/watch?v=a9LDPn-MO4I',
+            'url': 'https://www.youtube.com/watch?v=BaW_jenozKc&v=UxxajLWwzqY',
+            'note': 'Use the first video ID in the URL',
+            'info_dict': {
+                'id': 'BaW_jenozKc',
+                'ext': 'mp4',
+                'title': 'youtube-dl test video "\'/\\ä↭𝕐',
+                'uploader': 'Philipp Hagemeister',
+                'uploader_id': 'phihag',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/phihag',
+                'upload_date': '20121002',
+                'description': 'test chars:  "\'/\\ä↭𝕐\ntest URL: https://github.com/rg3/youtube-dl/issues/1892\n\nThis is a test video for youtube-dl.\n\nFor more information, contact phihag@phihag.de .',
+                'categories': ['Science & Technology'],
+                'tags': ['youtube-dl'],
+                'duration': 10,
+                'view_count': int,
+                'like_count': int,
+                'dislike_count': int,
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            'url': 'https://www.youtube.com/watch?v=a9LDPn-MO4I',

             'note': '256k DASH audio (format 141) via DASH manifest',
             'info_dict': {
                 'id': 'a9LDPn-MO4I',
                 'ext': 'm4a',
                 'upload_date': '20121002',
                 'uploader_id': '8KVIDEO',
             'note': '256k DASH audio (format 141) via DASH manifest',
             'info_dict': {
                 'id': 'a9LDPn-MO4I',
                 'ext': 'm4a',
                 'upload_date': '20121002',
                 'uploader_id': '8KVIDEO',

+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/8KVIDEO',

                 'description': '',
                 'uploader': '8KVIDEO',
                 'title': 'UHDTV TEST 8K VIDEO.mp4'
                 'description': '',
                 'uploader': '8KVIDEO',
                 'title': 'UHDTV TEST 8K VIDEO.mp4'


@@ -372,6 +627,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
                 'youtube_include_dash_manifest': True,
                 'format': '141',
             },
                 'youtube_include_dash_manifest': True,
                 'format': '141',
             },

+            'skip': 'format 141 not served anymore',

         },
         # DASH manifest with encrypted signature
         {
         },
         # DASH manifest with encrypted signature
         {


@@ -379,15 +635,35 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
             'info_dict': {
                 'id': 'IB3lcPjvWLA',
                 'ext': 'm4a',
             'info_dict': {
                 'id': 'IB3lcPjvWLA',
                 'ext': 'm4a',

-                'title': 'Afrojack, Spree Wilson - The Spark ft. Spree Wilson',
-                'description': 'md5:12e7067fa6735a77bdcbb58cb1187d2d',
+                'title': 'Afrojack, Spree Wilson - The Spark (Official Music Video) ft. Spree Wilson',
+                'description': 'md5:8f5e2b82460520b619ccac1f509d43bf',
+                'duration': 244,

                 'uploader': 'AfrojackVEVO',
                 'uploader_id': 'AfrojackVEVO',
                 'upload_date': '20131011',
             },
             'params': {
                 'youtube_include_dash_manifest': True,
                 'uploader': 'AfrojackVEVO',
                 'uploader_id': 'AfrojackVEVO',
                 'upload_date': '20131011',
             },
             'params': {
                 'youtube_include_dash_manifest': True,

-                'format': '141',
+                'format': '141/bestaudio[ext=m4a]',
+            },
+        },
+        # JS player signature function name containing $
+        {
+            'url': 'https://www.youtube.com/watch?v=nfWlot6h_JM',
+            'info_dict': {
+                'id': 'nfWlot6h_JM',
+                'ext': 'm4a',
+                'title': 'Taylor Swift - Shake It Off',
+                'description': 'md5:bec2185232c05479482cb5a9b82719bf',
+                'duration': 242,
+                'uploader': 'TaylorSwiftVEVO',
+                'uploader_id': 'TaylorSwiftVEVO',
+                'upload_date': '20140818',
+                'creator': 'Taylor Swift',
+            },
+            'params': {
+                'youtube_include_dash_manifest': True,
+                'format': '141/bestaudio[ext=m4a]',

             },
         },
         # Controversy video
             },
         },
         # Controversy video


@@ -396,24 +672,525 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
             'info_dict': {
                 'id': 'T4XJQO3qol8',
                 'ext': 'mp4',
             'info_dict': {
                 'id': 'T4XJQO3qol8',
                 'ext': 'mp4',

+                'duration': 219,

                 'upload_date': '20100909',
                 'upload_date': '20100909',

-                'uploader': 'The Amazing Atheist',
+                'uploader': 'Amazing Atheist',

                 'uploader_id': 'TheAmazingAtheist',
                 'uploader_id': 'TheAmazingAtheist',

+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/TheAmazingAtheist',

                 'title': 'Burning Everyone\'s Koran',
                 'description': 'SUBSCRIBE: http://www.youtube.com/saturninefilms\n\nEven Obama has taken a stand against freedom on this issue: http://www.huffingtonpost.com/2010/09/09/obama-gma-interview-quran_n_710282.html',
             }
         },
         # Normal age-gate video (No vevo, embed allowed)
         {
                 'title': 'Burning Everyone\'s Koran',
                 'description': 'SUBSCRIBE: http://www.youtube.com/saturninefilms\n\nEven Obama has taken a stand against freedom on this issue: http://www.huffingtonpost.com/2010/09/09/obama-gma-interview-quran_n_710282.html',
             }
         },
         # Normal age-gate video (No vevo, embed allowed)
         {

-            'url': 'http://youtube.com/watch?v=HtVdAasjOgU',
+            'url': 'https://youtube.com/watch?v=HtVdAasjOgU',

             'info_dict': {
                 'id': 'HtVdAasjOgU',
                 'ext': 'mp4',
                 'title': 'The Witcher 3: Wild Hunt - The Sword Of Destiny Trailer',
             'info_dict': {
                 'id': 'HtVdAasjOgU',
                 'ext': 'mp4',
                 'title': 'The Witcher 3: Wild Hunt - The Sword Of Destiny Trailer',

-                'description': 'md5:eca57043abae25130f58f655ad9a7771',
+                'description': r're:(?s).{100,}About the Game\n.*?The Witcher 3: Wild Hunt.{100,}',
+                'duration': 142,

                 'uploader': 'The Witcher',
                 'uploader_id': 'WitcherGame',
                 'uploader': 'The Witcher',
                 'uploader_id': 'WitcherGame',

+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/WitcherGame',

                 'upload_date': '20140605',
                 'upload_date': '20140605',

+                'age_limit': 18,
+            },
+        },
+        # Age-gate video with encrypted signature
+        {
+            'url': 'https://www.youtube.com/watch?v=6kLq3WMV1nU',
+            'info_dict': {
+                'id': '6kLq3WMV1nU',
+                'ext': 'mp4',
+                'title': 'Dedication To My Ex (Miss That) (Lyric Video)',
+                'description': 'md5:33765bb339e1b47e7e72b5490139bb41',
+                'duration': 246,
+                'uploader': 'LloydVEVO',
+                'uploader_id': 'LloydVEVO',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/LloydVEVO',
+                'upload_date': '20110629',
+                'age_limit': 18,
+            },
+        },
+        # video_info is None (https://github.com/ytdl-org/youtube-dl/issues/4421)
+        # YouTube Red ad is not captured for creator
+        {
+            'url': '__2ABJjxzNo',
+            'info_dict': {
+                'id': '__2ABJjxzNo',
+                'ext': 'mp4',
+                'duration': 266,
+                'upload_date': '20100430',
+                'uploader_id': 'deadmau5',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/deadmau5',
+                'creator': 'deadmau5',
+                'description': 'md5:12c56784b8032162bb936a5f76d55360',
+                'uploader': 'deadmau5',
+                'title': 'Deadmau5 - Some Chords (HD)',
+                'alt_title': 'Some Chords',
+            },
+            'expected_warnings': [
+                'DASH manifest missing',
+            ]
+        },
+        # Olympics (https://github.com/ytdl-org/youtube-dl/issues/4431)
+        {
+            'url': 'lqQg6PlCWgI',
+            'info_dict': {
+                'id': 'lqQg6PlCWgI',
+                'ext': 'mp4',
+                'duration': 6085,
+                'upload_date': '20150827',
+                'uploader_id': 'olympic',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/olympic',
+                'description': 'HO09  - Women -  GER-AUS - Hockey - 31 July 2012 - London 2012 Olympic Games',
+                'uploader': 'Olympic',
+                'title': 'Hockey - Women -  GER-AUS - London 2012 Olympic Games',
+            },
+            'params': {
+                'skip_download': 'requires avconv',
+            }
+        },
+        # Non-square pixels
+        {
+            'url': 'https://www.youtube.com/watch?v=_b-2C3KPAM0',
+            'info_dict': {
+                'id': '_b-2C3KPAM0',
+                'ext': 'mp4',
+                'stretched_ratio': 16 / 9.,
+                'duration': 85,
+                'upload_date': '20110310',
+                'uploader_id': 'AllenMeow',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/AllenMeow',
+                'description': 'made by Wacom from Korea | 字幕&加油添醋 by TY\'s Allen | 感謝heylisa00cavey1001同學熱情提供梗及翻譯',
+                'uploader': '孫ᄋᄅ',
+                'title': '[A-made] 變態妍字幕版 太妍 我就是這樣的人',
+            },
+        },
+        # url_encoded_fmt_stream_map is empty string
+        {
+            'url': 'qEJwOuvDf7I',
+            'info_dict': {
+                'id': 'qEJwOuvDf7I',
+                'ext': 'webm',
+                'title': 'Обсуждение судебной практики по выборам 14 сентября 2014 года в Санкт-Петербурге',
+                'description': '',
+                'upload_date': '20150404',
+                'uploader_id': 'spbelect',
+                'uploader': 'Наблюдатели Петербурга',
+            },
+            'params': {
+                'skip_download': 'requires avconv',
+            },
+            'skip': 'This live event has ended.',
+        },
+        # Extraction from multiple DASH manifests (https://github.com/ytdl-org/youtube-dl/pull/6097)
+        {
+            'url': 'https://www.youtube.com/watch?v=FIl7x6_3R5Y',
+            'info_dict': {
+                'id': 'FIl7x6_3R5Y',
+                'ext': 'webm',
+                'title': 'md5:7b81415841e02ecd4313668cde88737a',
+                'description': 'md5:116377fd2963b81ec4ce64b542173306',
+                'duration': 220,
+                'upload_date': '20150625',
+                'uploader_id': 'dorappi2000',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/dorappi2000',
+                'uploader': 'dorappi2000',
+                'formats': 'mincount:31',
+            },
+            'skip': 'not actual anymore',
+        },
+        # DASH manifest with segment_list
+        {
+            'url': 'https://www.youtube.com/embed/CsmdDsKjzN8',
+            'md5': '8ce563a1d667b599d21064e982ab9e31',
+            'info_dict': {
+                'id': 'CsmdDsKjzN8',
+                'ext': 'mp4',
+                'upload_date': '20150501',  # According to '<meta itemprop="datePublished"', but in other places it's 20150510
+                'uploader': 'Airtek',
+                'description': 'Retransmisión en directo de la XVIII media maratón de Zaragoza.',
+                'uploader_id': 'UCzTzUmjXxxacNnL8I3m4LnQ',
+                'title': 'Retransmisión XVIII Media maratón Zaragoza 2015',
+            },
+            'params': {
+                'youtube_include_dash_manifest': True,
+                'format': '135',  # bestvideo
+            },
+            'skip': 'This live event has ended.',
+        },
+        {
+            # Multifeed videos (multiple cameras), URL is for Main Camera
+            'url': 'https://www.youtube.com/watch?v=jqWvoWXjCVs',
+            'info_dict': {
+                'id': 'jqWvoWXjCVs',
+                'title': 'teamPGP: Rocket League Noob Stream',
+                'description': 'md5:dc7872fb300e143831327f1bae3af010',
+            },
+            'playlist': [{
+                'info_dict': {
+                    'id': 'jqWvoWXjCVs',
+                    'ext': 'mp4',
+                    'title': 'teamPGP: Rocket League Noob Stream (Main Camera)',
+                    'description': 'md5:dc7872fb300e143831327f1bae3af010',
+                    'duration': 7335,
+                    'upload_date': '20150721',
+                    'uploader': 'Beer Games Beer',
+                    'uploader_id': 'beergamesbeer',
+                    'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/beergamesbeer',
+                    'license': 'Standard YouTube License',
+                },
+            }, {
+                'info_dict': {
+                    'id': '6h8e8xoXJzg',
+                    'ext': 'mp4',
+                    'title': 'teamPGP: Rocket League Noob Stream (kreestuh)',
+                    'description': 'md5:dc7872fb300e143831327f1bae3af010',
+                    'duration': 7337,
+                    'upload_date': '20150721',
+                    'uploader': 'Beer Games Beer',
+                    'uploader_id': 'beergamesbeer',
+                    'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/beergamesbeer',
+                    'license': 'Standard YouTube License',
+                },
+            }, {
+                'info_dict': {
+                    'id': 'PUOgX5z9xZw',
+                    'ext': 'mp4',
+                    'title': 'teamPGP: Rocket League Noob Stream (grizzle)',
+                    'description': 'md5:dc7872fb300e143831327f1bae3af010',
+                    'duration': 7337,
+                    'upload_date': '20150721',
+                    'uploader': 'Beer Games Beer',
+                    'uploader_id': 'beergamesbeer',
+                    'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/beergamesbeer',
+                    'license': 'Standard YouTube License',
+                },
+            }, {
+                'info_dict': {
+                    'id': 'teuwxikvS5k',
+                    'ext': 'mp4',
+                    'title': 'teamPGP: Rocket League Noob Stream (zim)',
+                    'description': 'md5:dc7872fb300e143831327f1bae3af010',
+                    'duration': 7334,
+                    'upload_date': '20150721',
+                    'uploader': 'Beer Games Beer',
+                    'uploader_id': 'beergamesbeer',
+                    'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/beergamesbeer',
+                    'license': 'Standard YouTube License',
+                },
+            }],
+            'params': {
+                'skip_download': True,
+            },
+            'skip': 'This video is not available.',
+        },
+        {
+            # Multifeed video with comma in title (see https://github.com/ytdl-org/youtube-dl/issues/8536)
+            'url': 'https://www.youtube.com/watch?v=gVfLd0zydlo',
+            'info_dict': {
+                'id': 'gVfLd0zydlo',
+                'title': 'DevConf.cz 2016 Day 2 Workshops 1 14:00 - 15:30',
+            },
+            'playlist_count': 2,
+            'skip': 'Not multifeed anymore',
+        },
+        {
+            'url': 'https://vid.plus/FlRa-iH7PGw',
+            'only_matching': True,
+        },
+        {
+            'url': 'https://zwearz.com/watch/9lWxNJF-ufM/electra-woman-dyna-girl-official-trailer-grace-helbig.html',
+            'only_matching': True,
+        },
+        {
+            # Title with JS-like syntax "};" (see https://github.com/ytdl-org/youtube-dl/issues/7468)
+            # Also tests cut-off URL expansion in video description (see
+            # https://github.com/ytdl-org/youtube-dl/issues/1892,
+            # https://github.com/ytdl-org/youtube-dl/issues/8164)
+            'url': 'https://www.youtube.com/watch?v=lsguqyKfVQg',
+            'info_dict': {
+                'id': 'lsguqyKfVQg',
+                'ext': 'mp4',
+                'title': '{dark walk}; Loki/AC/Dishonored; collab w/Elflover21',
+                'alt_title': 'Dark Walk - Position Music',
+                'description': 'md5:8085699c11dc3f597ce0410b0dcbb34a',
+                'duration': 133,
+                'upload_date': '20151119',
+                'uploader_id': 'IronSoulElf',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/IronSoulElf',
+                'uploader': 'IronSoulElf',
+                'creator': 'Todd Haberman,  Daniel Law Heath and Aaron Kaplan',
+                'track': 'Dark Walk - Position Music',
+                'artist': 'Todd Haberman,  Daniel Law Heath and Aaron Kaplan',
+                'album': 'Position Music - Production Music Vol. 143 - Dark Walk',
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            # Tags with '};' (see https://github.com/ytdl-org/youtube-dl/issues/7468)
+            'url': 'https://www.youtube.com/watch?v=Ms7iBXnlUO8',
+            'only_matching': True,
+        },
+        {
+            # Video with yt:stretch=17:0
+            'url': 'https://www.youtube.com/watch?v=Q39EVAstoRM',
+            'info_dict': {
+                'id': 'Q39EVAstoRM',
+                'ext': 'mp4',
+                'title': 'Clash Of Clans#14 Dicas De Ataque Para CV 4',
+                'description': 'md5:ee18a25c350637c8faff806845bddee9',
+                'upload_date': '20151107',
+                'uploader_id': 'UCCr7TALkRbo3EtFzETQF1LA',
+                'uploader': 'CH GAMER DROID',
+            },
+            'params': {
+                'skip_download': True,
+            },
+            'skip': 'This video does not exist.',
+        },
+        {
+            # Video licensed under Creative Commons
+            'url': 'https://www.youtube.com/watch?v=M4gD1WSo5mA',
+            'info_dict': {
+                'id': 'M4gD1WSo5mA',
+                'ext': 'mp4',
+                'title': 'md5:e41008789470fc2533a3252216f1c1d1',
+                'description': 'md5:a677553cf0840649b731a3024aeff4cc',
+                'duration': 721,
+                'upload_date': '20150127',
+                'uploader_id': 'BerkmanCenter',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/BerkmanCenter',
+                'uploader': 'The Berkman Klein Center for Internet & Society',
+                'license': 'Creative Commons Attribution license (reuse allowed)',
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            # Channel-like uploader_url
+            'url': 'https://www.youtube.com/watch?v=eQcmzGIKrzg',
+            'info_dict': {
+                'id': 'eQcmzGIKrzg',
+                'ext': 'mp4',
+                'title': 'Democratic Socialism and Foreign Policy | Bernie Sanders',
+                'description': 'md5:dda0d780d5a6e120758d1711d062a867',
+                'duration': 4060,
+                'upload_date': '20151119',
+                'uploader': 'Bernie Sanders',
+                'uploader_id': 'UCH1dpzjCEiGAt8CXkryhkZg',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UCH1dpzjCEiGAt8CXkryhkZg',
+                'license': 'Creative Commons Attribution license (reuse allowed)',
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            'url': 'https://www.youtube.com/watch?feature=player_embedded&amp;amp;v=V36LpHqtcDY',
+            'only_matching': True,
+        },
+        {
+            # YouTube Red paid video (https://github.com/ytdl-org/youtube-dl/issues/10059)
+            'url': 'https://www.youtube.com/watch?v=i1Ko8UG-Tdo',
+            'only_matching': True,
+        },
+        {
+            # Rental video preview
+            'url': 'https://www.youtube.com/watch?v=yYr8q0y5Jfg',
+            'info_dict': {
+                'id': 'uGpuVWrhIzE',
+                'ext': 'mp4',
+                'title': 'Piku - Trailer',
+                'description': 'md5:c36bd60c3fd6f1954086c083c72092eb',
+                'upload_date': '20150811',
+                'uploader': 'FlixMatrix',
+                'uploader_id': 'FlixMatrixKaravan',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/FlixMatrixKaravan',
+                'license': 'Standard YouTube License',
+            },
+            'params': {
+                'skip_download': True,
+            },
+            'skip': 'This video is not available.',
+        },
+        {
+            # YouTube Red video with episode data
+            'url': 'https://www.youtube.com/watch?v=iqKdEhx-dD4',
+            'info_dict': {
+                'id': 'iqKdEhx-dD4',
+                'ext': 'mp4',
+                'title': 'Isolation - Mind Field (Ep 1)',
+                'description': 'md5:46a29be4ceffa65b92d277b93f463c0f',
+                'duration': 2085,
+                'upload_date': '20170118',
+                'uploader': 'Vsauce',
+                'uploader_id': 'Vsauce',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/Vsauce',
+                'series': 'Mind Field',
+                'season_number': 1,
+                'episode_number': 1,
+            },
+            'params': {
+                'skip_download': True,
+            },
+            'expected_warnings': [
+                'Skipping DASH manifest',
+            ],
+        },
+        {
+            # The following content has been identified by the YouTube community
+            # as inappropriate or offensive to some audiences.
+            'url': 'https://www.youtube.com/watch?v=6SJNVb0GnPI',
+            'info_dict': {
+                'id': '6SJNVb0GnPI',
+                'ext': 'mp4',
+                'title': 'Race Differences in Intelligence',
+                'description': 'md5:5d161533167390427a1f8ee89a1fc6f1',
+                'duration': 965,
+                'upload_date': '20140124',
+                'uploader': 'New Century Foundation',
+                'uploader_id': 'UCEJYpZGqgUob0zVVEaLhvVg',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UCEJYpZGqgUob0zVVEaLhvVg',
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            # itag 212
+            'url': '1t24XAntNCY',
+            'only_matching': True,
+        },
+        {
+            # geo restricted to JP
+            'url': 'sJL6WA-aGkQ',
+            'only_matching': True,
+        },
+        {
+            'url': 'https://www.youtube.com/watch?v=MuAGGZNfUkU&list=RDMM',
+            'only_matching': True,
+        },
+        {
+            'url': 'https://invidio.us/watch?v=BaW_jenozKc',
+            'only_matching': True,
+        },
+        {
+            # DRM protected
+            'url': 'https://www.youtube.com/watch?v=s7_qI6_mIXc',
+            'only_matching': True,
+        },
+        {
+            # Video with unsupported adaptive stream type formats
+            'url': 'https://www.youtube.com/watch?v=Z4Vy8R84T1U',
+            'info_dict': {
+                'id': 'Z4Vy8R84T1U',
+                'ext': 'mp4',
+                'title': 'saman SMAN 53 Jakarta(Sancety) opening COFFEE4th at SMAN 53 Jakarta',
+                'description': 'md5:d41d8cd98f00b204e9800998ecf8427e',
+                'duration': 433,
+                'upload_date': '20130923',
+                'uploader': 'Amelia Putri Harwita',
+                'uploader_id': 'UCpOxM49HJxmC1qCalXyB3_Q',
+                'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UCpOxM49HJxmC1qCalXyB3_Q',
+                'formats': 'maxcount:10',
+            },
+            'params': {
+                'skip_download': True,
+                'youtube_include_dash_manifest': False,
+            },
+        },
+        {
+            # Youtube Music Auto-generated description
+            'url': 'https://music.youtube.com/watch?v=MgNrAu2pzNs',
+            'info_dict': {
+                'id': 'MgNrAu2pzNs',
+                'ext': 'mp4',
+                'title': 'Voyeur Girl',
+                'description': 'md5:7ae382a65843d6df2685993e90a8628f',
+                'upload_date': '20190312',
+                'uploader': 'Various Artists - Topic',
+                'uploader_id': 'UCVWKBi1ELZn0QX2CBLSkiyw',
+                'artist': 'Stephen',
+                'track': 'Voyeur Girl',
+                'album': 'it\'s too much love to know my dear',
+                'release_date': '20190313',
+                'release_year': 2019,
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            # Youtube Music Auto-generated description
+            # Retrieve 'artist' field from 'Artist:' in video description
+            # when it is present on youtube music video
+            'url': 'https://www.youtube.com/watch?v=k0jLE7tTwjY',
+            'info_dict': {
+                'id': 'k0jLE7tTwjY',
+                'ext': 'mp4',
+                'title': 'Latch Feat. Sam Smith',
+                'description': 'md5:3cb1e8101a7c85fcba9b4fb41b951335',
+                'upload_date': '20150110',
+                'uploader': 'Various Artists - Topic',
+                'uploader_id': 'UCNkEcmYdjrH4RqtNgh7BZ9w',
+                'artist': 'Disclosure',
+                'track': 'Latch Feat. Sam Smith',
+                'album': 'Latch Featuring Sam Smith',
+                'release_date': '20121008',
+                'release_year': 2012,
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            # Youtube Music Auto-generated description
+            # handle multiple artists on youtube music video
+            'url': 'https://www.youtube.com/watch?v=74qn0eJSjpA',
+            'info_dict': {
+                'id': '74qn0eJSjpA',
+                'ext': 'mp4',
+                'title': 'Eastside',
+                'description': 'md5:290516bb73dcbfab0dcc4efe6c3de5f2',
+                'upload_date': '20180710',
+                'uploader': 'Benny Blanco - Topic',
+                'uploader_id': 'UCzqz_ksRu_WkIzmivMdIS7A',
+                'artist': 'benny blanco, Halsey, Khalid',
+                'track': 'Eastside',
+                'album': 'Eastside',
+                'release_date': '20180713',
+                'release_year': 2018,
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            # Youtube Music Auto-generated description
+            # handle youtube music video with release_year and no release_date
+            'url': 'https://www.youtube.com/watch?v=-hcAI0g-f5M',
+            'info_dict': {
+                'id': '-hcAI0g-f5M',
+                'ext': 'mp4',
+                'title': 'Put It On Me',
+                'description': 'md5:93c55acc682ae7b0c668f2e34e1c069e',
+                'upload_date': '20180426',
+                'uploader': 'Matt Maeson - Topic',
+                'uploader_id': 'UCnEkIGqtGcQMLk73Kp-Q5LQ',
+                'artist': 'Matt Maeson',
+                'track': 'Put It On Me',
+                'album': 'The Hearse',
+                'release_date': None,
+                'release_year': 2018,
+            },
+            'params': {
+                'skip_download': True,

             },
         },
     ]
             },
         },
     ]


@@ -444,7 +1221,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
 
     def _extract_signature_function(self, video_id, player_url, example_sig):
         id_m = re.match(
 
     def _extract_signature_function(self, video_id, player_url, example_sig):
         id_m = re.match(

-            r'.*-(?P<id>[a-zA-Z0-9_-]+)(?:/watch_as3|/html5player)?\.(?P<ext>[a-z]+)$',
+            r'.*?-(?P<id>[a-zA-Z0-9_-]+)(?:/watch_as3|/html5player(?:-new)?|(?:/[a-z]{2,3}_[A-Z]{2})?/base)?\.(?P<ext>[a-z]+)$',

             player_url)
         if not id_m:
             raise ExtractorError('Cannot identify player %r' % player_url)
             player_url)
         if not id_m:
             raise ExtractorError('Cannot identify player %r' % player_url)


@@ -460,26 +1237,30 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
         if cache_spec is not None:
             return lambda s: ''.join(s[i] for i in cache_spec)
 
         if cache_spec is not None:
             return lambda s: ''.join(s[i] for i in cache_spec)
 

+        download_note = (
+            'Downloading player %s' % player_url
+            if self._downloader.params.get('verbose') else
+            'Downloading %s player %s' % (player_type, player_id)
+        )

         if player_type == 'js':
             code = self._download_webpage(
                 player_url, video_id,
         if player_type == 'js':
             code = self._download_webpage(
                 player_url, video_id,

-                note='Downloading %s player %s' % (player_type, player_id),
+                note=download_note,

                 errnote='Download of %s failed' % player_url)
             res = self._parse_sig_js(code)
         elif player_type == 'swf':
             urlh = self._request_webpage(
                 player_url, video_id,
                 errnote='Download of %s failed' % player_url)
             res = self._parse_sig_js(code)
         elif player_type == 'swf':
             urlh = self._request_webpage(
                 player_url, video_id,

-                note='Downloading %s player %s' % (player_type, player_id),
+                note=download_note,

                 errnote='Download of %s failed' % player_url)
             code = urlh.read()
             res = self._parse_sig_swf(code)
         else:
             assert False, 'Invalid player type %r' % player_type
 
                 errnote='Download of %s failed' % player_url)
             code = urlh.read()
             res = self._parse_sig_swf(code)
         else:
             assert False, 'Invalid player type %r' % player_type
 

-        if cache_spec is None:
-            test_string = ''.join(map(compat_chr, range(len(example_sig))))
-            cache_res = res(test_string)
-            cache_spec = [ord(c) for c in cache_res]
+        test_string = ''.join(map(compat_chr, range(len(example_sig))))
+        cache_res = res(test_string)
+        cache_spec = [ord(c) for c in cache_res]

 
         self._downloader.cache.store('youtube-sigfuncs', func_id, cache_spec)
         return res
 
         self._downloader.cache.store('youtube-sigfuncs', func_id, cache_spec)
         return res


@@ -493,8 +1274,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
                 return 's[%s%s%s]' % (starts, ends, steps)
 
             step = None
                 return 's[%s%s%s]' % (starts, ends, steps)
 
             step = None

-            start = '(Never used)'  # Quelch pyflakes warnings - start will be
-                                    # set as soon as step is set
+            # Quelch pyflakes warnings - start will be set when step is set
+            start = '(Never used)'

             for i, prev in zip(idxs[1:], idxs[:-1]):
                 if step is not None:
                     if i - prev == step:
             for i, prev in zip(idxs[1:], idxs[:-1]):
                 if step is not None:
                     if i - prev == step:


@@ -525,8 +1306,12 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
 
     def _parse_sig_js(self, jscode):
         funcname = self._search_regex(
 
     def _parse_sig_js(self, jscode):
         funcname = self._search_regex(

-            r'\.sig\|\|([a-zA-Z0-9]+)\(', jscode,
-            'Initial JS player signature function name')
+            (r'(["\'])signature\1\s*,\s*(?P<sig>[a-zA-Z0-9$]+)\(',
+             r'\.sig\|\|(?P<sig>[a-zA-Z0-9$]+)\(',
+             r'yt\.akamaized\.net/\)\s*\|\|\s*.*?\s*c\s*&&\s*d\.set\([^,]+\s*,\s*(?:encodeURIComponent\s*\()?(?P<sig>[a-zA-Z0-9$]+)\(',
+             r'\bc\s*&&\s*d\.set\([^,]+\s*,\s*(?:encodeURIComponent\s*\()?\s*(?P<sig>[a-zA-Z0-9$]+)\(',
+             r'\bc\s*&&\s*d\.set\([^,]+\s*,\s*\([^)]*\)\s*\(\s*(?P<sig>[a-zA-Z0-9$]+)\('),
+            jscode, 'Initial JS player signature function name', group='sig')

 
         jsi = JSInterpreter(jscode)
         initial_function = jsi.extract_function(funcname)
 
         jsi = JSInterpreter(jscode)
         initial_function = jsi.extract_function(funcname)


@@ -547,6 +1332,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
 
         if player_url.startswith('//'):
             player_url = 'https:' + player_url
 
         if player_url.startswith('//'):
             player_url = 'https:' + player_url

+        elif not re.match(r'https?://', player_url):
+            player_url = compat_urlparse.urljoin(
+                'https://www.youtube.com', player_url)

         try:
             player_id = (player_url, self._signature_cache_id(s))
             if player_id not in self._player_cache:
         try:
             player_id = (player_url, self._signature_cache_id(s))
             if player_id not in self._player_cache:


@@ -563,81 +1351,221 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
             raise ExtractorError(
                 'Signature extraction failed: ' + tb, cause=e)
 
             raise ExtractorError(
                 'Signature extraction failed: ' + tb, cause=e)
 

-    def _get_available_subtitles(self, video_id, webpage):
+    def _get_subtitles(self, video_id, webpage):

         try:
         try:

-            sub_list = self._download_webpage(
+            subs_doc = self._download_xml(

                 'https://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id,
                 video_id, note=False)
         except ExtractorError as err:
                 'https://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id,
                 video_id, note=False)
         except ExtractorError as err:

-            self._downloader.report_warning('unable to download video subtitles: %s' % compat_str(err))
+            self._downloader.report_warning('unable to download video subtitles: %s' % error_to_compat_str(err))

             return {}
             return {}

-        lang_list = re.findall(r'name="([^"]*)"[^>]+lang_code="([\w\-]+)"', sub_list)

 
         sub_lang_list = {}
 
         sub_lang_list = {}

-        for l in lang_list:
-            lang = l[1]
+        for track in subs_doc.findall('track'):
+            lang = track.attrib['lang_code']

             if lang in sub_lang_list:
                 continue
             if lang in sub_lang_list:
                 continue

-            params = compat_urllib_parse.urlencode({
-                'lang': lang,
-                'v': video_id,
-                'fmt': self._downloader.params.get('subtitlesformat', 'srt'),
-                'name': unescapeHTML(l[0]).encode('utf-8'),
-            })
-            url = 'https://www.youtube.com/api/timedtext?' + params
-            sub_lang_list[lang] = url
+            sub_formats = []
+            for ext in self._SUBTITLE_FORMATS:
+                params = compat_urllib_parse_urlencode({
+                    'lang': lang,
+                    'v': video_id,
+                    'fmt': ext,
+                    'name': track.attrib['name'].encode('utf-8'),
+                })
+                sub_formats.append({
+                    'url': 'https://www.youtube.com/api/timedtext?' + params,
+                    'ext': ext,
+                })
+            sub_lang_list[lang] = sub_formats

         if not sub_lang_list:
             self._downloader.report_warning('video doesn\'t have subtitles')
             return {}
         return sub_lang_list
 
         if not sub_lang_list:
             self._downloader.report_warning('video doesn\'t have subtitles')
             return {}
         return sub_lang_list
 

-    def _get_available_automatic_caption(self, video_id, webpage):
+    def _get_ytplayer_config(self, video_id, webpage):
+        patterns = (
+            # User data may contain arbitrary character sequences that may affect
+            # JSON extraction with regex, e.g. when '};' is contained the second
+            # regex won't capture the whole JSON. Yet working around by trying more
+            # concrete regex first keeping in mind proper quoted string handling
+            # to be implemented in future that will replace this workaround (see
+            # https://github.com/ytdl-org/youtube-dl/issues/7468,
+            # https://github.com/ytdl-org/youtube-dl/pull/7599)
+            r';ytplayer\.config\s*=\s*({.+?});ytplayer',
+            r';ytplayer\.config\s*=\s*({.+?});',
+        )
+        config = self._search_regex(
+            patterns, webpage, 'ytplayer.config', default=None)
+        if config:
+            return self._parse_json(
+                uppercase_escape(config), video_id, fatal=False)
+
+    def _get_automatic_captions(self, video_id, webpage):

         """We need the webpage for getting the captions url, pass it as an
            argument to speed up the process."""
         """We need the webpage for getting the captions url, pass it as an
            argument to speed up the process."""

-        sub_format = self._downloader.params.get('subtitlesformat', 'srt')

         self.to_screen('%s: Looking for automatic captions' % video_id)
         self.to_screen('%s: Looking for automatic captions' % video_id)

-        mobj = re.search(r';ytplayer.config = ({.*?});', webpage)
+        player_config = self._get_ytplayer_config(video_id, webpage)

         err_msg = 'Couldn\'t find automatic captions for %s' % video_id
         err_msg = 'Couldn\'t find automatic captions for %s' % video_id

-        if mobj is None:
+        if not player_config:

             self._downloader.report_warning(err_msg)
             return {}
             self._downloader.report_warning(err_msg)
             return {}

-        player_config = json.loads(mobj.group(1))

         try:
             args = player_config['args']
         try:
             args = player_config['args']

-            caption_url = args['ttsurl']
-            timestamp = args['timestamp']
-            # We get the available subtitles
-            list_params = compat_urllib_parse.urlencode({
-                'type': 'list',
-                'tlangs': 1,
-                'asrs': 1,
-            })
-            list_url = caption_url + '&' + list_params
-            caption_list = self._download_xml(list_url, video_id)
-            original_lang_node = caption_list.find('track')
-            if original_lang_node is None or original_lang_node.attrib.get('kind') != 'asr':
-                self._downloader.report_warning('Video doesn\'t have automatic captions')
-                return {}
-            original_lang = original_lang_node.attrib['lang_code']
-
-            sub_lang_list = {}
-            for lang_node in caption_list.findall('target'):
-                sub_lang = lang_node.attrib['lang_code']
-                params = compat_urllib_parse.urlencode({
-                    'lang': original_lang,
-                    'tlang': sub_lang,
-                    'fmt': sub_format,
-                    'ts': timestamp,
-                    'kind': 'asr',
+            caption_url = args.get('ttsurl')
+            if caption_url:
+                timestamp = args['timestamp']
+                # We get the available subtitles
+                list_params = compat_urllib_parse_urlencode({
+                    'type': 'list',
+                    'tlangs': 1,
+                    'asrs': 1,

                 })
                 })

-                sub_lang_list[sub_lang] = caption_url + '&' + params
-            return sub_lang_list
+                list_url = caption_url + '&' + list_params
+                caption_list = self._download_xml(list_url, video_id)
+                original_lang_node = caption_list.find('track')
+                if original_lang_node is None:
+                    self._downloader.report_warning('Video doesn\'t have automatic captions')
+                    return {}
+                original_lang = original_lang_node.attrib['lang_code']
+                caption_kind = original_lang_node.attrib.get('kind', '')
+
+                sub_lang_list = {}
+                for lang_node in caption_list.findall('target'):
+                    sub_lang = lang_node.attrib['lang_code']
+                    sub_formats = []
+                    for ext in self._SUBTITLE_FORMATS:
+                        params = compat_urllib_parse_urlencode({
+                            'lang': original_lang,
+                            'tlang': sub_lang,
+                            'fmt': ext,
+                            'ts': timestamp,
+                            'kind': caption_kind,
+                        })
+                        sub_formats.append({
+                            'url': caption_url + '&' + params,
+                            'ext': ext,
+                        })
+                    sub_lang_list[sub_lang] = sub_formats
+                return sub_lang_list
+
+            def make_captions(sub_url, sub_langs):
+                parsed_sub_url = compat_urllib_parse_urlparse(sub_url)
+                caption_qs = compat_parse_qs(parsed_sub_url.query)
+                captions = {}
+                for sub_lang in sub_langs:
+                    sub_formats = []
+                    for ext in self._SUBTITLE_FORMATS:
+                        caption_qs.update({
+                            'tlang': [sub_lang],
+                            'fmt': [ext],
+                        })
+                        sub_url = compat_urlparse.urlunparse(parsed_sub_url._replace(
+                            query=compat_urllib_parse_urlencode(caption_qs, True)))
+                        sub_formats.append({
+                            'url': sub_url,
+                            'ext': ext,
+                        })
+                    captions[sub_lang] = sub_formats
+                return captions
+
+            # New captions format as of 22.06.2017
+            player_response = args.get('player_response')
+            if player_response and isinstance(player_response, compat_str):
+                player_response = self._parse_json(
+                    player_response, video_id, fatal=False)
+                if player_response:
+                    renderer = player_response['captions']['playerCaptionsTracklistRenderer']
+                    base_url = renderer['captionTracks'][0]['baseUrl']
+                    sub_lang_list = []
+                    for lang in renderer['translationLanguages']:
+                        lang_code = lang.get('languageCode')
+                        if lang_code:
+                            sub_lang_list.append(lang_code)
+                    return make_captions(base_url, sub_lang_list)
+
+            # Some videos don't provide ttsurl but rather caption_tracks and
+            # caption_translation_languages (e.g. 20LmZk1hakA)
+            # Does not used anymore as of 22.06.2017
+            caption_tracks = args['caption_tracks']
+            caption_translation_languages = args['caption_translation_languages']
+            caption_url = compat_parse_qs(caption_tracks.split(',')[0])['u'][0]
+            sub_lang_list = []
+            for lang in caption_translation_languages.split(','):
+                lang_qs = compat_parse_qs(compat_urllib_parse_unquote_plus(lang))
+                sub_lang = lang_qs.get('lc', [None])[0]
+                if sub_lang:
+                    sub_lang_list.append(sub_lang)
+            return make_captions(caption_url, sub_lang_list)

         # An extractor error can be raise by the download process if there are
         # no automatic captions but there are subtitles
         # An extractor error can be raise by the download process if there are
         # no automatic captions but there are subtitles

-        except (KeyError, ExtractorError):
+        except (KeyError, IndexError, ExtractorError):

             self._downloader.report_warning(err_msg)
             return {}
 
             self._downloader.report_warning(err_msg)
             return {}
 

+    def _mark_watched(self, video_id, video_info, player_response):
+        playback_url = url_or_none(try_get(
+            player_response,
+            lambda x: x['playbackTracking']['videostatsPlaybackUrl']['baseUrl']) or try_get(
+            video_info, lambda x: x['videostats_playback_base_url'][0]))
+        if not playback_url:
+            return
+        parsed_playback_url = compat_urlparse.urlparse(playback_url)
+        qs = compat_urlparse.parse_qs(parsed_playback_url.query)
+
+        # cpn generation algorithm is reverse engineered from base.js.
+        # In fact it works even with dummy cpn.
+        CPN_ALPHABET = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_'
+        cpn = ''.join((CPN_ALPHABET[random.randint(0, 256) & 63] for _ in range(0, 16)))
+
+        qs.update({
+            'ver': ['2'],
+            'cpn': [cpn],
+        })
+        playback_url = compat_urlparse.urlunparse(
+            parsed_playback_url._replace(query=compat_urllib_parse_urlencode(qs, True)))
+
+        self._download_webpage(
+            playback_url, video_id, 'Marking watched',
+            'Unable to mark watched', fatal=False)
+
+    @staticmethod
+    def _extract_urls(webpage):
+        # Embedded YouTube player
+        entries = [
+            unescapeHTML(mobj.group('url'))
+            for mobj in re.finditer(r'''(?x)
+            (?:
+                <iframe[^>]+?src=|
+                data-video-url=|
+                <embed[^>]+?src=|
+                embedSWF\(?:\s*|
+                <object[^>]+data=|
+                new\s+SWFObject\(
+            )
+            (["\'])
+                (?P<url>(?:https?:)?//(?:www\.)?youtube(?:-nocookie)?\.com/
+                (?:embed|v|p)/[0-9A-Za-z_-]{11}.*?)
+            \1''', webpage)]
+
+        # lazyYT YouTube embed
+        entries.extend(list(map(
+            unescapeHTML,
+            re.findall(r'class="lazyYT" data-youtube-id="([^"]+)"', webpage))))
+
+        # Wordpress "YouTube Video Importer" plugin
+        matches = re.findall(r'''(?x)<div[^>]+
+            class=(?P<q1>[\'"])[^\'"]*\byvii_single_video_player\b[^\'"]*(?P=q1)[^>]+
+            data-video_id=(?P<q2>[\'"])([^\'"]+)(?P=q2)''', webpage)
+        entries.extend(m[-1] for m in matches)
+
+        return entries
+
+    @staticmethod
+    def _extract_url(webpage):
+        urls = YoutubeIE._extract_urls(webpage)
+        return urls[0] if urls else None
+

     @classmethod
     def extract_id(cls, url):
         mobj = re.match(cls._VALID_URL, url, re.VERBOSE)
     @classmethod
     def extract_id(cls, url):
         mobj = re.match(cls._VALID_URL, url, re.VERBOSE)


@@ -646,34 +1574,68 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
         video_id = mobj.group(2)
         return video_id
 
         video_id = mobj.group(2)
         return video_id
 

-    def _extract_from_m3u8(self, manifest_url, video_id):
-        url_map = {}
-
-        def _get_urls(_manifest):
-            lines = _manifest.split('\n')
-            urls = filter(lambda l: l and not l.startswith('#'),
-                          lines)
-            return urls
-        manifest = self._download_webpage(manifest_url, video_id, 'Downloading formats manifest')
-        formats_urls = _get_urls(manifest)
-        for format_url in formats_urls:
-            itag = self._search_regex(r'itag/(\d+?)/', format_url, 'itag')
-            url_map[itag] = format_url
-        return url_map
-

     def _extract_annotations(self, video_id):
         url = 'https://www.youtube.com/annotations_invideo?features=1&legacy=1&video_id=%s' % video_id
         return self._download_webpage(url, video_id, note='Searching for annotations.', errnote='Unable to download video annotations.')
 
     def _extract_annotations(self, video_id):
         url = 'https://www.youtube.com/annotations_invideo?features=1&legacy=1&video_id=%s' % video_id
         return self._download_webpage(url, video_id, note='Searching for annotations.', errnote='Unable to download video annotations.')
 

+    @staticmethod
+    def _extract_chapters(description, duration):
+        if not description:
+            return None
+        chapter_lines = re.findall(
+            r'(?:^|<br\s*/>)([^<]*<a[^>]+onclick=["\']yt\.www\.watch\.player\.seekTo[^>]+>(\d{1,2}:\d{1,2}(?::\d{1,2})?)</a>[^>]*)(?=$|<br\s*/>)',
+            description)
+        if not chapter_lines:
+            return None
+        chapters = []
+        for next_num, (chapter_line, time_point) in enumerate(
+                chapter_lines, start=1):
+            start_time = parse_duration(time_point)
+            if start_time is None:
+                continue
+            if start_time > duration:
+                break
+            end_time = (duration if next_num == len(chapter_lines)
+                        else parse_duration(chapter_lines[next_num][1]))
+            if end_time is None:
+                continue
+            if end_time > duration:
+                end_time = duration
+            if start_time > end_time:
+                break
+            chapter_title = re.sub(
+                r'<a[^>]+>[^<]+</a>', '', chapter_line).strip(' \t-')
+            chapter_title = re.sub(r'\s+', ' ', chapter_title)
+            chapters.append({
+                'start_time': start_time,
+                'end_time': end_time,
+                'title': chapter_title,
+            })
+        return chapters
+

     def _real_extract(self, url):
     def _real_extract(self, url):

+        url, smuggled_data = unsmuggle_url(url, {})
+

         proto = (
             'http' if self._downloader.params.get('prefer_insecure', False)
             else 'https')
 
         proto = (
             'http' if self._downloader.params.get('prefer_insecure', False)
             else 'https')
 

+        start_time = None
+        end_time = None
+        parsed_url = compat_urllib_parse_urlparse(url)
+        for component in [parsed_url.fragment, parsed_url.query]:
+            query = compat_parse_qs(component)
+            if start_time is None and 't' in query:
+                start_time = parse_duration(query['t'][0])
+            if start_time is None and 'start' in query:
+                start_time = parse_duration(query['start'][0])
+            if end_time is None and 'end' in query:
+                end_time = parse_duration(query['end'][0])
+

         # Extract original video URL from URL with redirection, like age verification, using next_url parameter
         mobj = re.search(self._NEXT_URL_RE, url)
         if mobj:
         # Extract original video URL from URL with redirection, like age verification, using next_url parameter
         mobj = re.search(self._NEXT_URL_RE, url)
         if mobj:

-            url = proto + '://www.youtube.com/' + compat_urllib_parse.unquote(mobj.group(1)).lstrip('/')
+            url = proto + '://www.youtube.com/' + compat_urllib_parse_unquote(mobj.group(1)).lstrip('/')

         video_id = self.extract_id(url)
 
         # Get video webpage
         video_id = self.extract_id(url)
 
         # Get video webpage


@@ -687,16 +1649,44 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
         else:
             player_url = None
 
         else:
             player_url = None
 

+        dash_mpds = []
+
+        def add_dash_mpd(video_info):
+            dash_mpd = video_info.get('dashmpd')
+            if dash_mpd and dash_mpd[0] not in dash_mpds:
+                dash_mpds.append(dash_mpd[0])
+
+        def add_dash_mpd_pr(pl_response):
+            dash_mpd = url_or_none(try_get(
+                pl_response, lambda x: x['streamingData']['dashManifestUrl'],
+                compat_str))
+            if dash_mpd and dash_mpd not in dash_mpds:
+                dash_mpds.append(dash_mpd)
+
+        is_live = None
+        view_count = None
+
+        def extract_view_count(v_info):
+            return int_or_none(try_get(v_info, lambda x: x['view_count'][0]))
+
+        def extract_token(v_info):
+            return dict_get(v_info, ('account_playback_token', 'accountPlaybackToken', 'token'))
+
+        player_response = {}
+

         # Get video info
         # Get video info

+        embed_webpage = None

         if re.search(r'player-age-gate-content">', video_webpage) is not None:
             age_gate = True
             # We simulate the access to the video from www.youtube.com/v/{video_id}
             # this can be viewed without login into Youtube
         if re.search(r'player-age-gate-content">', video_webpage) is not None:
             age_gate = True
             # We simulate the access to the video from www.youtube.com/v/{video_id}
             # this can be viewed without login into Youtube

-            data = compat_urllib_parse.urlencode({
+            url = proto + '://www.youtube.com/embed/%s' % video_id
+            embed_webpage = self._download_webpage(url, video_id, 'Downloading embed webpage')
+            data = compat_urllib_parse_urlencode({

                 'video_id': video_id,
                 'eurl': 'https://youtube.googleapis.com/v/' + video_id,
                 'sts': self._search_regex(
                 'video_id': video_id,
                 'eurl': 'https://youtube.googleapis.com/v/' + video_id,
                 'sts': self._search_regex(

-                    r'"sts"\s*:\s*(\d+)', video_webpage, 'sts', default=''),
+                    r'"sts"\s*:\s*(\d+)', embed_webpage, 'sts', default=''),

             })
             video_info_url = proto + '://www.youtube.com/get_video_info?' + data
             video_info_webpage = self._download_webpage(
             })
             video_info_url = proto + '://www.youtube.com/get_video_info?' + data
             video_info_webpage = self._download_webpage(


@@ -704,120 +1694,136 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
                 note='Refetching age-gated info webpage',
                 errnote='unable to download video info webpage')
             video_info = compat_parse_qs(video_info_webpage)
                 note='Refetching age-gated info webpage',
                 errnote='unable to download video info webpage')
             video_info = compat_parse_qs(video_info_webpage)

+            add_dash_mpd(video_info)

         else:
             age_gate = False
         else:
             age_gate = False

-            try:
-                # Try looking directly into the video webpage
-                mobj = re.search(r';ytplayer\.config\s*=\s*({.*?});', video_webpage)
-                if not mobj:
-                    raise ValueError('Could not find ytplayer.config')  # caught below
-                json_code = uppercase_escape(mobj.group(1))
-                ytplayer_config = json.loads(json_code)
+            video_info = None
+            sts = None
+            # Try looking directly into the video webpage
+            ytplayer_config = self._get_ytplayer_config(video_id, video_webpage)
+            if ytplayer_config:

                 args = ytplayer_config['args']
                 args = ytplayer_config['args']

-                # Convert to the same format returned by compat_parse_qs
-                video_info = dict((k, [v]) for k, v in args.items())
-                if 'url_encoded_fmt_stream_map' not in args:
-                    raise ValueError('No stream_map present')  # caught below
-            except ValueError:
-                # We fallback to the get_video_info pages (used by the embed page)
+                if args.get('url_encoded_fmt_stream_map') or args.get('hlsvp'):
+                    # Convert to the same format returned by compat_parse_qs
+                    video_info = dict((k, [v]) for k, v in args.items())
+                    add_dash_mpd(video_info)
+                # Rental video is not rented but preview is available (e.g.
+                # https://www.youtube.com/watch?v=yYr8q0y5Jfg,
+                # https://github.com/ytdl-org/youtube-dl/issues/10532)
+                if not video_info and args.get('ypc_vid'):
+                    return self.url_result(
+                        args['ypc_vid'], YoutubeIE.ie_key(), video_id=args['ypc_vid'])
+                if args.get('livestream') == '1' or args.get('live_playback') == 1:
+                    is_live = True
+                sts = ytplayer_config.get('sts')
+                if not player_response:
+                    pl_response = str_or_none(args.get('player_response'))
+                    if pl_response:
+                        pl_response = self._parse_json(pl_response, video_id, fatal=False)
+                        if isinstance(pl_response, dict):
+                            player_response = pl_response
+            if not video_info or self._downloader.params.get('youtube_include_dash_manifest', True):
+                add_dash_mpd_pr(player_response)
+                # We also try looking in get_video_info since it may contain different dashmpd
+                # URL that points to a DASH manifest with possibly different itag set (some itags
+                # are missing from DASH manifest pointed by webpage's dashmpd, some - from DASH
+                # manifest pointed by get_video_info's dashmpd).
+                # The general idea is to take a union of itags of both DASH manifests (for example
+                # video with such 'manifest behavior' see https://github.com/ytdl-org/youtube-dl/issues/6093)

                 self.report_video_info_webpage_download(video_id)
                 self.report_video_info_webpage_download(video_id)

-                for el_type in ['&el=embedded', '&el=detailpage', '&el=vevo', '']:
-                    video_info_url = (proto + '://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en'
-                        % (video_id, el_type))
-                    video_info_webpage = self._download_webpage(video_info_url,
+                for el in ('embedded', 'detailpage', 'vevo', ''):
+                    query = {
+                        'video_id': video_id,
+                        'ps': 'default',
+                        'eurl': '',
+                        'gl': 'US',
+                        'hl': 'en',
+                    }
+                    if el:
+                        query['el'] = el
+                    if sts:
+                        query['sts'] = sts
+                    video_info_webpage = self._download_webpage(
+                        '%s://www.youtube.com/get_video_info' % proto,

                         video_id, note=False,
                         video_id, note=False,

-                        errnote='unable to download video info webpage')
-                    video_info = compat_parse_qs(video_info_webpage)
-                    if 'token' in video_info:
+                        errnote='unable to download video info webpage',
+                        fatal=False, query=query)
+                    if not video_info_webpage:
+                        continue
+                    get_video_info = compat_parse_qs(video_info_webpage)
+                    if not player_response:
+                        pl_response = get_video_info.get('player_response', [None])[0]
+                        if isinstance(pl_response, dict):
+                            player_response = pl_response
+                            add_dash_mpd_pr(player_response)
+                    add_dash_mpd(get_video_info)
+                    if view_count is None:
+                        view_count = extract_view_count(get_video_info)
+                    if not video_info:
+                        video_info = get_video_info
+                    get_token = extract_token(get_video_info)
+                    if get_token:
+                        # Different get_video_info requests may report different results, e.g.
+                        # some may report video unavailability, but some may serve it without
+                        # any complaint (see https://github.com/ytdl-org/youtube-dl/issues/7362,
+                        # the original webpage as well as el=info and el=embedded get_video_info
+                        # requests report video unavailability due to geo restriction while
+                        # el=detailpage succeeds and returns valid data). This is probably
+                        # due to YouTube measures against IP ranges of hosting providers.
+                        # Working around by preferring the first succeeded video_info containing
+                        # the token if no such video_info yet was found.
+                        token = extract_token(video_info)
+                        if not token:
+                            video_info = get_video_info

                         break
                         break

-        if 'token' not in video_info:
-            if 'reason' in video_info:
-                raise ExtractorError(
-                    'YouTube said: %s' % video_info['reason'][0],
-                    expected=True, video_id=video_id)
-            else:
-                raise ExtractorError(
-                    '"token" parameter not in video info for unknown reason',
-                    video_id=video_id)
-
-        if 'view_count' in video_info:
-            view_count = int(video_info['view_count'][0])
-        else:
-            view_count = None

 
 

-        # Check for "rental" videos
-        if 'ypc_video_rental_bar_text' in video_info and 'author' not in video_info:
-            raise ExtractorError('"rental" videos not supported')
+        def extract_unavailable_message():
+            return self._html_search_regex(
+                r'(?s)<h1[^>]+id="unavailable-message"[^>]*>(.+?)</h1>',
+                video_webpage, 'unavailable message', default=None)

 
 

-        # Start extracting information
-        self.report_information_extraction(video_id)
-
-        # uploader
-        if 'author' not in video_info:
-            raise ExtractorError('Unable to extract uploader name')
-        video_uploader = compat_urllib_parse.unquote_plus(video_info['author'][0])
+        if not video_info:
+            unavailable_message = extract_unavailable_message()
+            if not unavailable_message:
+                unavailable_message = 'Unable to extract video data'
+            raise ExtractorError(
+                'YouTube said: %s' % unavailable_message, expected=True, video_id=video_id)

 
 

-        # uploader_id
-        video_uploader_id = None
-        mobj = re.search(r'<link itemprop="url" href="http://www.youtube.com/(?:user|channel)/([^"]+)">', video_webpage)
-        if mobj is not None:
-            video_uploader_id = mobj.group(1)
-        else:
-            self._downloader.report_warning('unable to extract uploader nickname')
+        video_details = try_get(
+            player_response, lambda x: x['videoDetails'], dict) or {}

 
         # title
         if 'title' in video_info:
             video_title = video_info['title'][0]
 
         # title
         if 'title' in video_info:
             video_title = video_info['title'][0]

+        elif 'title' in player_response:
+            video_title = video_details['title']

         else:
             self._downloader.report_warning('Unable to extract video title')
             video_title = '_'
 
         else:
             self._downloader.report_warning('Unable to extract video title')
             video_title = '_'
 

-        # thumbnail image
-        # We try first to get a high quality image:
-        m_thumb = re.search(r'<span itemprop="thumbnail".*?href="(.*?)">',
-                            video_webpage, re.DOTALL)
-        if m_thumb is not None:
-            video_thumbnail = m_thumb.group(1)
-        elif 'thumbnail_url' not in video_info:
-            self._downloader.report_warning('unable to extract video thumbnail')
-            video_thumbnail = None
-        else:   # don't panic if we can't find it
-            video_thumbnail = compat_urllib_parse.unquote_plus(video_info['thumbnail_url'][0])
-
-        # upload date
-        upload_date = None
-        mobj = re.search(r'(?s)id="eow-date.*?>(.*?)</span>', video_webpage)
-        if mobj is None:
-            mobj = re.search(
-                r'(?s)id="watch-uploader-info".*?>.*?(?:Published|Uploaded|Streamed live) on (.*?)</strong>',
-                video_webpage)
-        if mobj is not None:
-            upload_date = ' '.join(re.sub(r'[/,-]', r' ', mobj.group(1)).split())
-            upload_date = unified_strdate(upload_date)
-
-        m_cat_container = self._search_regex(
-            r'(?s)<h4[^>]*>\s*Category\s*</h4>\s*<ul[^>]*>(.*?)</ul>',
-            video_webpage, 'categories', fatal=False)
-        if m_cat_container:
-            category = self._html_search_regex(
-                r'(?s)<a[^<]+>(.*?)</a>', m_cat_container, 'category',
-                default=None)
-            video_categories = None if category is None else [category]
-        else:
-            video_categories = None
-

         # description
         # description

-        video_description = get_element_by_id("eow-description", video_webpage)
+        description_original = video_description = get_element_by_id("eow-description", video_webpage)

         if video_description:
         if video_description:

-            video_description = re.sub(r'''(?x)
+
+            def replace_url(m):
+                redir_url = compat_urlparse.urljoin(url, m.group(1))
+                parsed_redir_url = compat_urllib_parse_urlparse(redir_url)
+                if re.search(r'^(?:www\.)?(?:youtube(?:-nocookie)?\.com|youtu\.be)$', parsed_redir_url.netloc) and parsed_redir_url.path == '/redirect':
+                    qs = compat_parse_qs(parsed_redir_url.query)
+                    q = qs.get('q')
+                    if q and q[0]:
+                        return q[0]
+                return redir_url
+
+            description_original = video_description = re.sub(r'''(?x)

                 <a\s+
                 <a\s+

-                    (?:[a-zA-Z-]+="[^"]+"\s+)*?
-                    title="([^"]+)"\s+
-                    (?:[a-zA-Z-]+="[^"]+"\s+)*?
-                    class="yt-uix-redirect-link"\s*>
-                [^<]+
+                    (?:[a-zA-Z-]+="[^"]*"\s+)*?
+                    (?:title|href)="([^"]+)"\s+
+                    (?:[a-zA-Z-]+="[^"]*"\s+)*?
+                    class="[^"]*"[^>]*>
+                [^<]+\.{3}\s*

                 </a>
                 </a>

-            ''', r'\1', video_description)
+            ''', replace_url, video_description)

             video_description = clean_html(video_description)
         else:
             fd_mobj = re.search(r'<meta name="description" content="([^"]+)"', video_webpage)
             video_description = clean_html(video_description)
         else:
             fd_mobj = re.search(r'<meta name="description" content="([^"]+)"', video_webpage)


@@ -826,46 +1832,49 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
             else:
                 video_description = ''
 
             else:
                 video_description = ''
 

-        def _extract_count(count_name):
-            count = self._search_regex(
-                r'id="watch-%s"[^>]*>.*?([\d,]+)\s*</span>' % re.escape(count_name),
-                video_webpage, count_name, default=None)
-            if count is not None:
-                return int(count.replace(',', ''))
-            return None
-        like_count = _extract_count('like')
-        dislike_count = _extract_count('dislike')
-
-        # subtitles
-        video_subtitles = self.extract_subtitles(video_id, video_webpage)
-
-        if self._downloader.params.get('listsubtitles', False):
-            self._list_available_subtitles(video_id, video_webpage)
-            return
+        if not smuggled_data.get('force_singlefeed', False):
+            if not self._downloader.params.get('noplaylist'):
+                multifeed_metadata_list = try_get(
+                    player_response,
+                    lambda x: x['multicamera']['playerLegacyMulticameraRenderer']['metadataList'],
+                    compat_str) or try_get(
+                    video_info, lambda x: x['multifeed_metadata_list'][0], compat_str)
+                if multifeed_metadata_list:
+                    entries = []
+                    feed_ids = []
+                    for feed in multifeed_metadata_list.split(','):
+                        # Unquote should take place before split on comma (,) since textual
+                        # fields may contain comma as well (see
+                        # https://github.com/ytdl-org/youtube-dl/issues/8536)
+                        feed_data = compat_parse_qs(compat_urllib_parse_unquote_plus(feed))
+                        entries.append({
+                            '_type': 'url_transparent',
+                            'ie_key': 'Youtube',
+                            'url': smuggle_url(
+                                '%s://www.youtube.com/watch?v=%s' % (proto, feed_data['id'][0]),
+                                {'force_singlefeed': True}),
+                            'title': '%s (%s)' % (video_title, feed_data['title'][0]),
+                        })
+                        feed_ids.append(feed_data['id'][0])
+                    self.to_screen(
+                        'Downloading multifeed video (%s) - add --no-playlist to just download video %s'
+                        % (', '.join(feed_ids), video_id))
+                    return self.playlist_result(entries, video_id, video_title, video_description)
+            else:
+                self.to_screen('Downloading just video %s because of --no-playlist' % video_id)

 
 

-        if 'length_seconds' not in video_info:
-            self._downloader.report_warning('unable to extract video duration')
-            video_duration = None
-        else:
-            video_duration = int(compat_urllib_parse.unquote_plus(video_info['length_seconds'][0]))
+        if view_count is None:
+            view_count = extract_view_count(video_info)
+        if view_count is None and video_details:
+            view_count = int_or_none(video_details.get('viewCount'))

 
 

-        # annotations
-        video_annotations = None
-        if self._downloader.params.get('writeannotations', False):
-            video_annotations = self._extract_annotations(video_id)
+        # Check for "rental" videos
+        if 'ypc_video_rental_bar_text' in video_info and 'author' not in video_info:
+            raise ExtractorError('"rental" videos not supported. See https://github.com/ytdl-org/youtube-dl/issues/359 for more information.', expected=True)

 
 

-        def _map_to_format_list(urlmap):
-            formats = []
-            for itag, video_real_url in urlmap.items():
-                dct = {
-                    'format_id': itag,
-                    'url': video_real_url,
-                    'player_url': player_url,
-                }
-                if itag in self._formats:
-                    dct.update(self._formats[itag])
-                formats.append(dct)
-            return formats
+        def _extract_filesize(media_url):
+            return int_or_none(self._search_regex(
+                r'\bclen[=/](\d+)', media_url, 'filesize', default=None))

 
         if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
             self.report_rtmp_download()
 
         if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
             self.report_rtmp_download()


@@ -875,34 +1884,82 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
                 'url': video_info['conn'][0],
                 'player_url': player_url,
             }]
                 'url': video_info['conn'][0],
                 'player_url': player_url,
             }]

-        elif len(video_info.get('url_encoded_fmt_stream_map', [])) >= 1 or len(video_info.get('adaptive_fmts', [])) >= 1:
+        elif not is_live and (len(video_info.get('url_encoded_fmt_stream_map', [''])[0]) >= 1 or len(video_info.get('adaptive_fmts', [''])[0]) >= 1):

             encoded_url_map = video_info.get('url_encoded_fmt_stream_map', [''])[0] + ',' + video_info.get('adaptive_fmts', [''])[0]
             if 'rtmpe%3Dyes' in encoded_url_map:
             encoded_url_map = video_info.get('url_encoded_fmt_stream_map', [''])[0] + ',' + video_info.get('adaptive_fmts', [''])[0]
             if 'rtmpe%3Dyes' in encoded_url_map:

-                raise ExtractorError('rtmpe downloads are not supported, see https://github.com/rg3/youtube-dl/issues/343 for more information.', expected=True)
-            url_map = {}
+                raise ExtractorError('rtmpe downloads are not supported, see https://github.com/ytdl-org/youtube-dl/issues/343 for more information.', expected=True)
+            formats_spec = {}
+            fmt_list = video_info.get('fmt_list', [''])[0]
+            if fmt_list:
+                for fmt in fmt_list.split(','):
+                    spec = fmt.split('/')
+                    if len(spec) > 1:
+                        width_height = spec[1].split('x')
+                        if len(width_height) == 2:
+                            formats_spec[spec[0]] = {
+                                'resolution': spec[1],
+                                'width': int_or_none(width_height[0]),
+                                'height': int_or_none(width_height[1]),
+                            }
+            q = qualities(['small', 'medium', 'hd720'])
+            streaming_formats = try_get(player_response, lambda x: x['streamingData']['formats'], list)
+            if streaming_formats:
+                for fmt in streaming_formats:
+                    itag = str_or_none(fmt.get('itag'))
+                    if not itag:
+                        continue
+                    quality = fmt.get('quality')
+                    quality_label = fmt.get('qualityLabel') or quality
+                    formats_spec[itag] = {
+                        'asr': int_or_none(fmt.get('audioSampleRate')),
+                        'filesize': int_or_none(fmt.get('contentLength')),
+                        'format_note': quality_label,
+                        'fps': int_or_none(fmt.get('fps')),
+                        'height': int_or_none(fmt.get('height')),
+                        'quality': q(quality),
+                        # bitrate for itag 43 is always 2147483647
+                        'tbr': float_or_none(fmt.get('averageBitrate') or fmt.get('bitrate'), 1000) if itag != '43' else None,
+                        'width': int_or_none(fmt.get('width')),
+                    }
+            formats = []

             for url_data_str in encoded_url_map.split(','):
                 url_data = compat_parse_qs(url_data_str)
             for url_data_str in encoded_url_map.split(','):
                 url_data = compat_parse_qs(url_data_str)

-                if 'itag' not in url_data or 'url' not in url_data:
+                if 'itag' not in url_data or 'url' not in url_data or url_data.get('drm_families'):
+                    continue
+                stream_type = int_or_none(try_get(url_data, lambda x: x['stream_type'][0]))
+                # Unsupported FORMAT_STREAM_TYPE_OTF
+                if stream_type == 3:

                     continue
                 format_id = url_data['itag'][0]
                 url = url_data['url'][0]
 
                     continue
                 format_id = url_data['itag'][0]
                 url = url_data['url'][0]
 

-                if 'sig' in url_data:
-                    url += '&signature=' + url_data['sig'][0]
-                elif 's' in url_data:
-                    encrypted_sig = url_data['s'][0]
-
-                    if not age_gate:
+                if 's' in url_data or self._downloader.params.get('youtube_include_dash_manifest', True):
+                    ASSETS_RE = r'"assets":.+?"js":\s*("[^"]+")'
+                    jsplayer_url_json = self._search_regex(
+                        ASSETS_RE,
+                        embed_webpage if age_gate else video_webpage,
+                        'JS player URL (1)', default=None)
+                    if not jsplayer_url_json and not age_gate:
+                        # We need the embed website after all
+                        if embed_webpage is None:
+                            embed_url = proto + '://www.youtube.com/embed/%s' % video_id
+                            embed_webpage = self._download_webpage(
+                                embed_url, video_id, 'Downloading embed webpage')

                         jsplayer_url_json = self._search_regex(
                         jsplayer_url_json = self._search_regex(

-                            r'"assets":.+?"js":\s*("[^"]+")',
-                            video_webpage, 'JS player URL')
-                        player_url = json.loads(jsplayer_url_json)
+                            ASSETS_RE, embed_webpage, 'JS player URL')
+
+                    player_url = json.loads(jsplayer_url_json)

                     if player_url is None:
                         player_url_json = self._search_regex(
                             r'ytplayer\.config.*?"url"\s*:\s*("[^"]+")',
                             video_webpage, 'age gate player URL')
                         player_url = json.loads(player_url_json)
 
                     if player_url is None:
                         player_url_json = self._search_regex(
                             r'ytplayer\.config.*?"url"\s*:\s*("[^"]+")',
                             video_webpage, 'age gate player URL')
                         player_url = json.loads(player_url_json)
 

+                if 'sig' in url_data:
+                    url += '&signature=' + url_data['sig'][0]
+                elif 's' in url_data:
+                    encrypted_sig = url_data['s'][0]
+

                     if self._downloader.params.get('verbose'):
                         if player_url is None:
                             player_version = 'unknown'
                     if self._downloader.params.get('verbose'):
                         if player_url is None:
                             player_version = 'unknown'


@@ -915,7 +1972,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
                                 player_desc = 'flash player %s' % player_version
                             else:
                                 player_version = self._search_regex(
                                 player_desc = 'flash player %s' % player_version
                             else:
                                 player_version = self._search_regex(

-                                    r'html5player-([^/]+?)(?:/html5player)?\.js',
+                                    [r'html5player-([^/]+?)(?:/html5player(?:-new)?)?\.js',
+                                     r'(?:www|player(?:_ias)?)-([^/]+)(?:/[a-z]{2,3}_[A-Z]{2})?/base\.js'],

                                     player_url,
                                     'html5 player', fatal=False)
                                 player_desc = 'html5 player %s' % player_version
                                     player_url,
                                     'html5 player', fatal=False)
                                 player_desc = 'html5 player %s' % player_version


@@ -926,111 +1984,424 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
 
                     signature = self._decrypt_signature(
                         encrypted_sig, video_id, player_url, age_gate)
 
                     signature = self._decrypt_signature(
                         encrypted_sig, video_id, player_url, age_gate)

-                    url += '&signature=' + signature
+                    sp = try_get(url_data, lambda x: x['sp'][0], compat_str) or 'signature'
+                    url += '&%s=%s' % (sp, signature)

                 if 'ratebypass' not in url:
                     url += '&ratebypass=yes'
                 if 'ratebypass' not in url:
                     url += '&ratebypass=yes'

-                url_map[format_id] = url
-            formats = _map_to_format_list(url_map)
-        elif video_info.get('hlsvp'):
-            manifest_url = video_info['hlsvp'][0]
-            url_map = self._extract_from_m3u8(manifest_url, video_id)
-            formats = _map_to_format_list(url_map)
+
+                dct = {
+                    'format_id': format_id,
+                    'url': url,
+                    'player_url': player_url,
+                }
+                if format_id in self._formats:
+                    dct.update(self._formats[format_id])
+                if format_id in formats_spec:
+                    dct.update(formats_spec[format_id])
+
+                # Some itags are not included in DASH manifest thus corresponding formats will
+                # lack metadata (see https://github.com/ytdl-org/youtube-dl/pull/5993).
+                # Trying to extract metadata from url_encoded_fmt_stream_map entry.
+                mobj = re.search(r'^(?P<width>\d+)[xX](?P<height>\d+)$', url_data.get('size', [''])[0])
+                width, height = (int(mobj.group('width')), int(mobj.group('height'))) if mobj else (None, None)
+
+                filesize = int_or_none(url_data.get(
+                    'clen', [None])[0]) or _extract_filesize(url)
+
+                quality = url_data.get('quality', [None])[0]
+
+                more_fields = {
+                    'filesize': filesize,
+                    'tbr': float_or_none(url_data.get('bitrate', [None])[0], 1000),
+                    'width': width,
+                    'height': height,
+                    'fps': int_or_none(url_data.get('fps', [None])[0]),
+                    'format_note': url_data.get('quality_label', [None])[0] or quality,
+                    'quality': q(quality),
+                }
+                for key, value in more_fields.items():
+                    if value:
+                        dct[key] = value
+                type_ = url_data.get('type', [None])[0]
+                if type_:
+                    type_split = type_.split(';')
+                    kind_ext = type_split[0].split('/')
+                    if len(kind_ext) == 2:
+                        kind, _ = kind_ext
+                        dct['ext'] = mimetype2ext(type_split[0])
+                        if kind in ('audio', 'video'):
+                            codecs = None
+                            for mobj in re.finditer(
+                                    r'(?P<key>[a-zA-Z_-]+)=(?P<quote>["\']?)(?P<val>.+?)(?P=quote)(?:;|$)', type_):
+                                if mobj.group('key') == 'codecs':
+                                    codecs = mobj.group('val')
+                                    break
+                            if codecs:
+                                dct.update(parse_codecs(codecs))
+                if dct.get('acodec') == 'none' or dct.get('vcodec') == 'none':
+                    dct['downloader_options'] = {
+                        # Youtube throttles chunks >~10M
+                        'http_chunk_size': 10485760,
+                    }
+                formats.append(dct)
+        else:
+            manifest_url = (
+                url_or_none(try_get(
+                    player_response,
+                    lambda x: x['streamingData']['hlsManifestUrl'],
+                    compat_str))
+                or url_or_none(try_get(
+                    video_info, lambda x: x['hlsvp'][0], compat_str)))
+            if manifest_url:
+                formats = []
+                m3u8_formats = self._extract_m3u8_formats(
+                    manifest_url, video_id, 'mp4', fatal=False)
+                for a_format in m3u8_formats:
+                    itag = self._search_regex(
+                        r'/itag/(\d+)/', a_format['url'], 'itag', default=None)
+                    if itag:
+                        a_format['format_id'] = itag
+                        if itag in self._formats:
+                            dct = self._formats[itag].copy()
+                            dct.update(a_format)
+                            a_format = dct
+                    a_format['player_url'] = player_url
+                    # Accept-Encoding header causes failures in live streams on Youtube and Youtube Gaming
+                    a_format.setdefault('http_headers', {})['Youtubedl-no-compression'] = 'True'
+                    formats.append(a_format)
+            else:
+                error_message = clean_html(video_info.get('reason', [None])[0])
+                if not error_message:
+                    error_message = extract_unavailable_message()
+                if error_message:
+                    raise ExtractorError(error_message, expected=True)
+                raise ExtractorError('no conn, hlsvp, hlsManifestUrl or url_encoded_fmt_stream_map information found in video info')
+
+        # uploader
+        video_uploader = try_get(
+            video_info, lambda x: x['author'][0],
+            compat_str) or str_or_none(video_details.get('author'))
+        if video_uploader:
+            video_uploader = compat_urllib_parse_unquote_plus(video_uploader)
+        else:
+            self._downloader.report_warning('unable to extract uploader name')
+
+        # uploader_id
+        video_uploader_id = None
+        video_uploader_url = None
+        mobj = re.search(
+            r'<link itemprop="url" href="(?P<uploader_url>https?://www\.youtube\.com/(?:user|channel)/(?P<uploader_id>[^"]+))">',
+            video_webpage)
+        if mobj is not None:
+            video_uploader_id = mobj.group('uploader_id')
+            video_uploader_url = mobj.group('uploader_url')
+        else:
+            self._downloader.report_warning('unable to extract uploader nickname')
+
+        channel_id = (
+            str_or_none(video_details.get('channelId'))
+            or self._html_search_meta(
+                'channelId', video_webpage, 'channel id', default=None)
+            or self._search_regex(
+                r'data-channel-external-id=(["\'])(?P<id>(?:(?!\1).)+)\1',
+                video_webpage, 'channel id', default=None, group='id'))
+        channel_url = 'http://www.youtube.com/channel/%s' % channel_id if channel_id else None
+
+        # thumbnail image
+        # We try first to get a high quality image:
+        m_thumb = re.search(r'<span itemprop="thumbnail".*?href="(.*?)">',
+                            video_webpage, re.DOTALL)
+        if m_thumb is not None:
+            video_thumbnail = m_thumb.group(1)
+        elif 'thumbnail_url' not in video_info:
+            self._downloader.report_warning('unable to extract video thumbnail')
+            video_thumbnail = None
+        else:   # don't panic if we can't find it
+            video_thumbnail = compat_urllib_parse_unquote_plus(video_info['thumbnail_url'][0])
+
+        # upload date
+        upload_date = self._html_search_meta(
+            'datePublished', video_webpage, 'upload date', default=None)
+        if not upload_date:
+            upload_date = self._search_regex(
+                [r'(?s)id="eow-date.*?>(.*?)</span>',
+                 r'(?:id="watch-uploader-info".*?>.*?|["\']simpleText["\']\s*:\s*["\'])(?:Published|Uploaded|Streamed live|Started) on (.+?)[<"\']'],
+                video_webpage, 'upload date', default=None)
+        upload_date = unified_strdate(upload_date)
+
+        video_license = self._html_search_regex(
+            r'<h4[^>]+class="title"[^>]*>\s*License\s*</h4>\s*<ul[^>]*>\s*<li>(.+?)</li',
+            video_webpage, 'license', default=None)
+
+        m_music = re.search(
+            r'''(?x)
+                <h4[^>]+class="title"[^>]*>\s*Music\s*</h4>\s*
+                <ul[^>]*>\s*
+                <li>(?P<title>.+?)
+                by (?P<creator>.+?)
+                (?:
+                    \(.+?\)|
+                    <a[^>]*
+                        (?:
+                            \bhref=["\']/red[^>]*>|             # drop possible
+                            >\s*Listen ad-free with YouTube Red # YouTube Red ad
+                        )
+                    .*?
+                )?</li
+            ''',
+            video_webpage)
+        if m_music:
+            video_alt_title = remove_quotes(unescapeHTML(m_music.group('title')))
+            video_creator = clean_html(m_music.group('creator'))
+        else:
+            video_alt_title = video_creator = None
+
+        def extract_meta(field):
+            return self._html_search_regex(
+                r'<h4[^>]+class="title"[^>]*>\s*%s\s*</h4>\s*<ul[^>]*>\s*<li>(.+?)</li>\s*' % field,
+                video_webpage, field, default=None)
+
+        track = extract_meta('Song')
+        artist = extract_meta('Artist')
+        album = extract_meta('Album')
+
+        # Youtube Music Auto-generated description
+        release_date = release_year = None
+        if video_description:
+            mobj = re.search(r'(?s)Provided to YouTube by [^\n]+\n+(?P<track>[^·]+)·(?P<artist>[^\n]+)\n+(?P<album>[^\n]+)(?:.+?℗\s*(?P<release_year>\d{4})(?!\d))?(?:.+?Released on\s*:\s*(?P<release_date>\d{4}-\d{2}-\d{2}))?(.+?\nArtist\s*:\s*(?P<clean_artist>[^\n]+))?', video_description)
+            if mobj:
+                if not track:
+                    track = mobj.group('track').strip()
+                if not artist:
+                    artist = mobj.group('clean_artist') or ', '.join(a.strip() for a in mobj.group('artist').split('·'))
+                if not album:
+                    album = mobj.group('album'.strip())
+                release_year = mobj.group('release_year')
+                release_date = mobj.group('release_date')
+                if release_date:
+                    release_date = release_date.replace('-', '')
+                    if not release_year:
+                        release_year = int(release_date[:4])
+                if release_year:
+                    release_year = int(release_year)
+
+        m_episode = re.search(
+            r'<div[^>]+id="watch7-headline"[^>]*>\s*<span[^>]*>.*?>(?P<series>[^<]+)</a></b>\s*S(?P<season>\d+)\s*•\s*E(?P<episode>\d+)</span>',
+            video_webpage)
+        if m_episode:
+            series = unescapeHTML(m_episode.group('series'))
+            season_number = int(m_episode.group('season'))
+            episode_number = int(m_episode.group('episode'))
+        else:
+            series = season_number = episode_number = None
+
+        m_cat_container = self._search_regex(
+            r'(?s)<h4[^>]*>\s*Category\s*</h4>\s*<ul[^>]*>(.*?)</ul>',
+            video_webpage, 'categories', default=None)
+        if m_cat_container:
+            category = self._html_search_regex(
+                r'(?s)<a[^<]+>(.*?)</a>', m_cat_container, 'category',
+                default=None)
+            video_categories = None if category is None else [category]

         else:
         else:

-            raise ExtractorError('no conn, hlsvp or url_encoded_fmt_stream_map information found in video info')
+            video_categories = None
+
+        video_tags = [
+            unescapeHTML(m.group('content'))
+            for m in re.finditer(self._meta_regex('og:video:tag'), video_webpage)]
+
+        def _extract_count(count_name):
+            return str_to_int(self._search_regex(
+                r'-%s-button[^>]+><span[^>]+class="yt-uix-button-content"[^>]*>([\d,]+)</span>'
+                % re.escape(count_name),
+                video_webpage, count_name, default=None))
+
+        like_count = _extract_count('like')
+        dislike_count = _extract_count('dislike')
+
+        if view_count is None:
+            view_count = str_to_int(self._search_regex(
+                r'<[^>]+class=["\']watch-view-count[^>]+>\s*([\d,\s]+)', video_webpage,
+                'view count', default=None))
+
+        average_rating = (
+            float_or_none(video_details.get('averageRating'))
+            or try_get(video_info, lambda x: float_or_none(x['avg_rating'][0])))
+
+        # subtitles
+        video_subtitles = self.extract_subtitles(video_id, video_webpage)
+        automatic_captions = self.extract_automatic_captions(video_id, video_webpage)
+
+        video_duration = try_get(
+            video_info, lambda x: int_or_none(x['length_seconds'][0]))
+        if not video_duration:
+            video_duration = int_or_none(video_details.get('lengthSeconds'))
+        if not video_duration:
+            video_duration = parse_duration(self._html_search_meta(
+                'duration', video_webpage, 'video duration'))
+
+        # annotations
+        video_annotations = None
+        if self._downloader.params.get('writeannotations', False):
+            video_annotations = self._extract_annotations(video_id)
+
+        chapters = self._extract_chapters(description_original, video_duration)

 
         # Look for the DASH manifest
         if self._downloader.params.get('youtube_include_dash_manifest', True):
 
         # Look for the DASH manifest
         if self._downloader.params.get('youtube_include_dash_manifest', True):

-            try:
-                # The DASH manifest used needs to be the one from the original video_webpage.
-                # The one found in get_video_info seems to be using different signatures.
-                # However, in the case of an age restriction there won't be any embedded dashmpd in the video_webpage.
-                # Luckily, it seems, this case uses some kind of default signature (len == 86), so the
-                # combination of get_video_info and the _static_decrypt_signature() decryption fallback will work here.
-                dash_manifest_url = video_info.get('dashmpd')[0]
-
-                def decrypt_sig(mobj):
-                    s = mobj.group(1)
-                    dec_s = self._decrypt_signature(s, video_id, player_url, age_gate)
-                    return '/signature/%s' % dec_s
-                dash_manifest_url = re.sub(r'/s/([\w\.]+)', decrypt_sig, dash_manifest_url)
-                dash_doc = self._download_xml(
-                    dash_manifest_url, video_id,
-                    note='Downloading DASH manifest',
-                    errnote='Could not download DASH manifest')
-                for r in dash_doc.findall('.//{urn:mpeg:DASH:schema:MPD:2011}Representation'):
-                    url_el = r.find('{urn:mpeg:DASH:schema:MPD:2011}BaseURL')
-                    if url_el is None:
-                        continue
-                    format_id = r.attrib['id']
-                    video_url = url_el.text
-                    filesize = int_or_none(url_el.attrib.get('{http://youtube.com/yt/2012/10/10}contentLength'))
-                    f = {
-                        'format_id': format_id,
-                        'url': video_url,
-                        'width': int_or_none(r.attrib.get('width')),
-                        'tbr': int_or_none(r.attrib.get('bandwidth'), 1000),
-                        'asr': int_or_none(r.attrib.get('audioSamplingRate')),
-                        'filesize': filesize,
-                    }
-                    try:
-                        existing_format = next(
-                            fo for fo in formats
-                            if fo['format_id'] == format_id)
-                    except StopIteration:
-                        f.update(self._formats.get(format_id, {}))
-                        formats.append(f)
-                    else:
-                        existing_format.update(f)
-
-            except (ExtractorError, KeyError) as e:
-                self.report_warning('Skipping DASH manifest: %r' % e, video_id)
+            dash_mpd_fatal = True
+            for mpd_url in dash_mpds:
+                dash_formats = {}
+                try:
+                    def decrypt_sig(mobj):
+                        s = mobj.group(1)
+                        dec_s = self._decrypt_signature(s, video_id, player_url, age_gate)
+                        return '/signature/%s' % dec_s
+
+                    mpd_url = re.sub(r'/s/([a-fA-F0-9\.]+)', decrypt_sig, mpd_url)
+
+                    for df in self._extract_mpd_formats(
+                            mpd_url, video_id, fatal=dash_mpd_fatal,
+                            formats_dict=self._formats):
+                        if not df.get('filesize'):
+                            df['filesize'] = _extract_filesize(df['url'])
+                        # Do not overwrite DASH format found in some previous DASH manifest
+                        if df['format_id'] not in dash_formats:
+                            dash_formats[df['format_id']] = df
+                        # Additional DASH manifests may end up in HTTP Error 403 therefore
+                        # allow them to fail without bug report message if we already have
+                        # some DASH manifest succeeded. This is temporary workaround to reduce
+                        # burst of bug reports until we figure out the reason and whether it
+                        # can be fixed at all.
+                        dash_mpd_fatal = False
+                except (ExtractorError, KeyError) as e:
+                    self.report_warning(
+                        'Skipping DASH manifest: %r' % e, video_id)
+                if dash_formats:
+                    # Remove the formats we found through non-DASH, they
+                    # contain less info and it can be wrong, because we use
+                    # fixed values (for example the resolution). See
+                    # https://github.com/ytdl-org/youtube-dl/issues/5774 for an
+                    # example.
+                    formats = [f for f in formats if f['format_id'] not in dash_formats.keys()]
+                    formats.extend(dash_formats.values())
+
+        # Check for malformed aspect ratio
+        stretched_m = re.search(
+            r'<meta\s+property="og:video:tag".*?content="yt:stretch=(?P<w>[0-9]+):(?P<h>[0-9]+)">',
+            video_webpage)
+        if stretched_m:
+            w = float(stretched_m.group('w'))
+            h = float(stretched_m.group('h'))
+            # yt:stretch may hold invalid ratio data (e.g. for Q39EVAstoRM ratio is 17:0).
+            # We will only process correct ratios.
+            if w > 0 and h > 0:
+                ratio = w / h
+                for f in formats:
+                    if f.get('vcodec') != 'none':
+                        f['stretched_ratio'] = ratio
+
+        if not formats:
+            token = extract_token(video_info)
+            if not token:
+                if 'reason' in video_info:
+                    if 'The uploader has not made this video available in your country.' in video_info['reason']:
+                        regions_allowed = self._html_search_meta(
+                            'regionsAllowed', video_webpage, default=None)
+                        countries = regions_allowed.split(',') if regions_allowed else None
+                        self.raise_geo_restricted(
+                            msg=video_info['reason'][0], countries=countries)
+                    reason = video_info['reason'][0]
+                    if 'Invalid parameters' in reason:
+                        unavailable_message = extract_unavailable_message()
+                        if unavailable_message:
+                            reason = unavailable_message
+                    raise ExtractorError(
+                        'YouTube said: %s' % reason,
+                        expected=True, video_id=video_id)
+                else:
+                    raise ExtractorError(
+                        '"token" parameter not in video info for unknown reason',
+                        video_id=video_id)
+
+        if not formats and (video_info.get('license_info') or try_get(player_response, lambda x: x['streamingData']['licenseInfos'])):
+            raise ExtractorError('This video is DRM protected.', expected=True)

 
         self._sort_formats(formats)
 
 
         self._sort_formats(formats)
 

+        self.mark_watched(video_id, video_info, player_response)
+

         return {
             'id': video_id,
             'uploader': video_uploader,
             'uploader_id': video_uploader_id,
         return {
             'id': video_id,
             'uploader': video_uploader,
             'uploader_id': video_uploader_id,

+            'uploader_url': video_uploader_url,
+            'channel_id': channel_id,
+            'channel_url': channel_url,

             'upload_date': upload_date,
             'upload_date': upload_date,

+            'license': video_license,
+            'creator': video_creator or artist,

             'title': video_title,
             'title': video_title,

+            'alt_title': video_alt_title or track,

             'thumbnail': video_thumbnail,
             'description': video_description,
             'categories': video_categories,
             'thumbnail': video_thumbnail,
             'description': video_description,
             'categories': video_categories,

+            'tags': video_tags,

             'subtitles': video_subtitles,
             'subtitles': video_subtitles,

+            'automatic_captions': automatic_captions,

             'duration': video_duration,
             'age_limit': 18 if age_gate else 0,
             'annotations': video_annotations,
             'duration': video_duration,
             'age_limit': 18 if age_gate else 0,
             'annotations': video_annotations,

+            'chapters': chapters,

             'webpage_url': proto + '://www.youtube.com/watch?v=%s' % video_id,
             'view_count': view_count,
             'like_count': like_count,
             'dislike_count': dislike_count,
             'webpage_url': proto + '://www.youtube.com/watch?v=%s' % video_id,
             'view_count': view_count,
             'like_count': like_count,
             'dislike_count': dislike_count,

+            'average_rating': average_rating,

             'formats': formats,
             'formats': formats,

+            'is_live': is_live,
+            'start_time': start_time,
+            'end_time': end_time,
+            'series': series,
+            'season_number': season_number,
+            'episode_number': episode_number,
+            'track': track,
+            'artist': artist,
+            'album': album,
+            'release_date': release_date,
+            'release_year': release_year,

         }
 
 
         }
 
 

-class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
+class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):

     IE_DESC = 'YouTube.com playlists'
     _VALID_URL = r"""(?x)(?:
                         (?:https?://)?
                         (?:\w+\.)?
     IE_DESC = 'YouTube.com playlists'
     _VALID_URL = r"""(?x)(?:
                         (?:https?://)?
                         (?:\w+\.)?

-                        youtube\.com/

                         (?:
                         (?:

-                           (?:course|view_play_list|my_playlists|artist|playlist|watch|embed/videoseries)
-                           \? (?:.*?&)*? (?:p|a|list)=
-                        |  p/
+                            (?:
+                                youtube\.com|
+                                invidio\.us
+                            )
+                            /
+                            (?:
+                               (?:course|view_play_list|my_playlists|artist|playlist|watch|embed/(?:videoseries|[0-9A-Za-z_-]{11}))
+                               \? (?:.*?[&;])*? (?:p|a|list)=
+                            |  p/
+                            )|
+                            youtu\.be/[0-9A-Za-z_-]{11}\?.*?\blist=

                         )
                         (
                         )
                         (

-                            (?:PL|LL|EC|UU|FL|RD)?[0-9A-Za-z-_]{10,}
+                            (?:PL|LL|EC|UU|FL|RD|UL|TL|OLAK5uy_)?[0-9A-Za-z-_]{10,}

                             # Top tracks, they can also include dots
                             |(?:MC)[\w\.]*
                         )
                         .*
                      |
                             # Top tracks, they can also include dots
                             |(?:MC)[\w\.]*
                         )
                         .*
                      |

-                        ((?:PL|LL|EC|UU|FL|RD)[0-9A-Za-z-_]{10,})
-                     )"""
+                        (%(playlist_id)s)
+                     )""" % {'playlist_id': YoutubeBaseInfoExtractor._PLAYLIST_ID_RE}

     _TEMPLATE_URL = 'https://www.youtube.com/playlist?list=%s'
     _TEMPLATE_URL = 'https://www.youtube.com/playlist?list=%s'

-    _MORE_PAGES_INDICATOR = r'data-link-type="next"'
-    _VIDEO_RE = r'href="\s*/watch\?v=(?P<id>[0-9A-Za-z_-]{11})&amp;[^"]*?index=(?P<index>\d+)'
+    _VIDEO_RE = r'href="\s*/watch\?v=(?P<id>[0-9A-Za-z_-]{11})&amp;[^"]*?index=(?P<index>\d+)(?:[^>]+>(?P<title>[^<]+))?'

     IE_NAME = 'youtube:playlist'
     _TESTS = [{
         'url': 'https://www.youtube.com/playlist?list=PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re',
     IE_NAME = 'youtube:playlist'
     _TESTS = [{
         'url': 'https://www.youtube.com/playlist?list=PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re',


@@ -1042,14 +2413,17 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
     }, {
         'url': 'https://www.youtube.com/playlist?list=PLtPgu7CB4gbZDA7i_euNxn75ISqxwZPYx',
         'info_dict': {
     }, {
         'url': 'https://www.youtube.com/playlist?list=PLtPgu7CB4gbZDA7i_euNxn75ISqxwZPYx',
         'info_dict': {

+            'id': 'PLtPgu7CB4gbZDA7i_euNxn75ISqxwZPYx',

             'title': 'YDL_Empty_List',
         },
         'playlist_count': 0,
             'title': 'YDL_Empty_List',
         },
         'playlist_count': 0,

+        'skip': 'This playlist is private',

     }, {
         'note': 'Playlist with deleted videos (#651). As a bonus, the video #51 is also twice in this list.',
         'url': 'https://www.youtube.com/playlist?list=PLwP_SiAcdui0KVebT0mU9Apz359a4ubsC',
         'info_dict': {
             'title': '29C3: Not my department',
     }, {
         'note': 'Playlist with deleted videos (#651). As a bonus, the video #51 is also twice in this list.',
         'url': 'https://www.youtube.com/playlist?list=PLwP_SiAcdui0KVebT0mU9Apz359a4ubsC',
         'info_dict': {
             'title': '29C3: Not my department',

+            'id': 'PLwP_SiAcdui0KVebT0mU9Apz359a4ubsC',

         },
         'playlist_count': 95,
     }, {
         },
         'playlist_count': 95,
     }, {


@@ -1057,6 +2431,7 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
         'url': 'PLBB231211A4F62143',
         'info_dict': {
             'title': '[OLD]Team Fortress 2 (Class-based LP)',
         'url': 'PLBB231211A4F62143',
         'info_dict': {
             'title': '[OLD]Team Fortress 2 (Class-based LP)',

+            'id': 'PLBB231211A4F62143',

         },
         'playlist_mincount': 26,
     }, {
         },
         'playlist_mincount': 26,
     }, {


@@ -1064,195 +2439,311 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
         'url': 'https://www.youtube.com/playlist?list=UUBABnxM4Ar9ten8Mdjj1j0Q',
         'info_dict': {
             'title': 'Uploads from Cauchemar',
         'url': 'https://www.youtube.com/playlist?list=UUBABnxM4Ar9ten8Mdjj1j0Q',
         'info_dict': {
             'title': 'Uploads from Cauchemar',

+            'id': 'UUBABnxM4Ar9ten8Mdjj1j0Q',

         },
         'playlist_mincount': 799,
     }, {
         'url': 'PLtPgu7CB4gbY9oDN3drwC3cMbJggS7dKl',
         'info_dict': {
             'title': 'YDL_safe_search',
         },
         'playlist_mincount': 799,
     }, {
         'url': 'PLtPgu7CB4gbY9oDN3drwC3cMbJggS7dKl',
         'info_dict': {
             'title': 'YDL_safe_search',

+            'id': 'PLtPgu7CB4gbY9oDN3drwC3cMbJggS7dKl',

         },
         'playlist_count': 2,
         },
         'playlist_count': 2,

+        'skip': 'This playlist is private',

     }, {
         'note': 'embedded',
     }, {
         'note': 'embedded',

-        'url': 'http://www.youtube.com/embed/videoseries?list=PL6IaIsEjSbf96XFRuNccS_RuEXwNdsoEu',
+        'url': 'https://www.youtube.com/embed/videoseries?list=PL6IaIsEjSbf96XFRuNccS_RuEXwNdsoEu',

         'playlist_count': 4,
         'info_dict': {
             'title': 'JODA15',
         'playlist_count': 4,
         'info_dict': {
             'title': 'JODA15',

+            'id': 'PL6IaIsEjSbf96XFRuNccS_RuEXwNdsoEu',
+        }
+    }, {
+        'url': 'http://www.youtube.com/embed/_xDOZElKyNU?list=PLsyOSbh5bs16vubvKePAQ1x3PhKavfBIl',
+        'playlist_mincount': 485,
+        'info_dict': {
+            'title': '2017 華語最新單曲 (2/24更新)',
+            'id': 'PLsyOSbh5bs16vubvKePAQ1x3PhKavfBIl',

         }
     }, {
         'note': 'Embedded SWF player',
         }
     }, {
         'note': 'Embedded SWF player',

-        'url': 'http://www.youtube.com/p/YN5VISEtHet5D4NEvfTd0zcgFk84NqFZ?hl=en_US&fs=1&rel=0',
+        'url': 'https://www.youtube.com/p/YN5VISEtHet5D4NEvfTd0zcgFk84NqFZ?hl=en_US&fs=1&rel=0',

         'playlist_count': 4,
         'info_dict': {
             'title': 'JODA7',
         'playlist_count': 4,
         'info_dict': {
             'title': 'JODA7',

+            'id': 'YN5VISEtHet5D4NEvfTd0zcgFk84NqFZ',

         }
         }

+    }, {
+        'note': 'Buggy playlist: the webpage has a "Load more" button but it doesn\'t have more videos',
+        'url': 'https://www.youtube.com/playlist?list=UUXw-G3eDE9trcvY2sBMM_aA',
+        'info_dict': {
+            'title': 'Uploads from Interstellar Movie',
+            'id': 'UUXw-G3eDE9trcvY2sBMM_aA',
+        },
+        'playlist_mincount': 21,
+    }, {
+        # Playlist URL that does not actually serve a playlist
+        'url': 'https://www.youtube.com/watch?v=FqZTN594JQw&list=PLMYEtVRpaqY00V9W81Cwmzp6N6vZqfUKD4',
+        'info_dict': {
+            'id': 'FqZTN594JQw',
+            'ext': 'webm',
+            'title': "Smiley's People 01 detective, Adventure Series, Action",
+            'uploader': 'STREEM',
+            'uploader_id': 'UCyPhqAZgwYWZfxElWVbVJng',
+            'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UCyPhqAZgwYWZfxElWVbVJng',
+            'upload_date': '20150526',
+            'license': 'Standard YouTube License',
+            'description': 'md5:507cdcb5a49ac0da37a920ece610be80',
+            'categories': ['People & Blogs'],
+            'tags': list,
+            'view_count': int,
+            'like_count': int,
+            'dislike_count': int,
+        },
+        'params': {
+            'skip_download': True,
+        },
+        'add_ie': [YoutubeIE.ie_key()],
+    }, {
+        'url': 'https://youtu.be/yeWKywCrFtk?list=PL2qgrgXsNUG5ig9cat4ohreBjYLAPC0J5',
+        'info_dict': {
+            'id': 'yeWKywCrFtk',
+            'ext': 'mp4',
+            'title': 'Small Scale Baler and Braiding Rugs',
+            'uploader': 'Backus-Page House Museum',
+            'uploader_id': 'backuspagemuseum',
+            'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/backuspagemuseum',
+            'upload_date': '20161008',
+            'license': 'Standard YouTube License',
+            'description': 'md5:800c0c78d5eb128500bffd4f0b4f2e8a',
+            'categories': ['Nonprofits & Activism'],
+            'tags': list,
+            'like_count': int,
+            'dislike_count': int,
+        },
+        'params': {
+            'noplaylist': True,
+            'skip_download': True,
+        },
+    }, {
+        'url': 'https://youtu.be/uWyaPkt-VOI?list=PL9D9FC436B881BA21',
+        'only_matching': True,
+    }, {
+        'url': 'TLGGrESM50VT6acwMjAyMjAxNw',
+        'only_matching': True,
+    }, {
+        # music album playlist
+        'url': 'OLAK5uy_m4xAFdmMC5rX3Ji3g93pQe3hqLZw_9LhM',
+        'only_matching': True,
+    }, {
+        'url': 'https://invidio.us/playlist?list=PLDIoUOhQQPlXr63I_vwF9GD8sAKh77dWU',
+        'only_matching': True,

     }]
 
     def _real_initialize(self):
         self._login()
 
     }]
 
     def _real_initialize(self):
         self._login()
 

-    def _ids_to_results(self, ids):
-        return [
-            self.url_result(vid_id, 'Youtube', video_id=vid_id)
-            for vid_id in ids]
-

     def _extract_mix(self, playlist_id):
     def _extract_mix(self, playlist_id):

-        # The mixes are generated from a a single video
+        # The mixes are generated from a single video

         # the id of the playlist is just 'RD' + video_id
         # the id of the playlist is just 'RD' + video_id

-        url = 'https://youtube.com/watch?v=%s&list=%s' % (playlist_id[-11:], playlist_id)
-        webpage = self._download_webpage(
-            url, playlist_id, 'Downloading Youtube mix')
+        ids = []
+        last_id = playlist_id[-11:]
+        for n in itertools.count(1):
+            url = 'https://youtube.com/watch?v=%s&list=%s' % (last_id, playlist_id)
+            webpage = self._download_webpage(
+                url, playlist_id, 'Downloading page {0} of Youtube mix'.format(n))
+            new_ids = orderedSet(re.findall(
+                r'''(?xs)data-video-username=".*?".*?
+                           href="/watch\?v=([0-9A-Za-z_-]{11})&amp;[^"]*?list=%s''' % re.escape(playlist_id),
+                webpage))
+            # Fetch new pages until all the videos are repeated, it seems that
+            # there are always 51 unique videos.
+            new_ids = [_id for _id in new_ids if _id not in ids]
+            if not new_ids:
+                break
+            ids.extend(new_ids)
+            last_id = ids[-1]
+
+        url_results = self._ids_to_results(ids)
+

         search_title = lambda class_name: get_element_by_attribute('class', class_name, webpage)
         title_span = (
         search_title = lambda class_name: get_element_by_attribute('class', class_name, webpage)
         title_span = (

-            search_title('playlist-title') or
-            search_title('title long-title') or
-            search_title('title'))
+            search_title('playlist-title')
+            or search_title('title long-title')
+            or search_title('title'))

         title = clean_html(title_span)
         title = clean_html(title_span)

-        ids = orderedSet(re.findall(
-            r'''(?xs)data-video-username=".*?".*?
-                       href="/watch\?v=([0-9A-Za-z_-]{11})&amp;[^"]*?list=%s''' % re.escape(playlist_id),
-            webpage))
-        url_results = self._ids_to_results(ids)

 
         return self.playlist_result(url_results, playlist_id, title)
 
 
         return self.playlist_result(url_results, playlist_id, title)
 

-    def _real_extract(self, url):
-        # Extract playlist id
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError('Invalid URL: %s' % url)
-        playlist_id = mobj.group(1) or mobj.group(2)
+    def _extract_playlist(self, playlist_id):
+        url = self._TEMPLATE_URL % playlist_id
+        page = self._download_webpage(url, playlist_id)
+
+        # the yt-alert-message now has tabindex attribute (see https://github.com/ytdl-org/youtube-dl/issues/11604)
+        for match in re.findall(r'<div class="yt-alert-message"[^>]*>([^<]+)</div>', page):
+            match = match.strip()
+            # Check if the playlist exists or is private
+            mobj = re.match(r'[^<]*(?:The|This) playlist (?P<reason>does not exist|is private)[^<]*', match)
+            if mobj:
+                reason = mobj.group('reason')
+                message = 'This playlist %s' % reason
+                if 'private' in reason:
+                    message += ', use --username or --netrc to access it'
+                message += '.'
+                raise ExtractorError(message, expected=True)
+            elif re.match(r'[^<]*Invalid parameters[^<]*', match):
+                raise ExtractorError(
+                    'Invalid parameters. Maybe URL is incorrect.',
+                    expected=True)
+            elif re.match(r'[^<]*Choose your language[^<]*', match):
+                continue
+            else:
+                self.report_warning('Youtube gives an alert message: ' + match)
+
+        playlist_title = self._html_search_regex(
+            r'(?s)<h1 class="pl-header-title[^"]*"[^>]*>\s*(.*?)\s*</h1>',
+            page, 'title', default=None)
+
+        _UPLOADER_BASE = r'class=["\']pl-header-details[^>]+>\s*<li>\s*<a[^>]+\bhref='
+        uploader = self._search_regex(
+            r'%s["\']/(?:user|channel)/[^>]+>([^<]+)' % _UPLOADER_BASE,
+            page, 'uploader', default=None)
+        mobj = re.search(
+            r'%s(["\'])(?P<path>/(?:user|channel)/(?P<uploader_id>.+?))\1' % _UPLOADER_BASE,
+            page)
+        if mobj:
+            uploader_id = mobj.group('uploader_id')
+            uploader_url = compat_urlparse.urljoin(url, mobj.group('path'))
+        else:
+            uploader_id = uploader_url = None

 
 

+        has_videos = True
+
+        if not playlist_title:
+            try:
+                # Some playlist URLs don't actually serve a playlist (e.g.
+                # https://www.youtube.com/watch?v=FqZTN594JQw&list=PLMYEtVRpaqY00V9W81Cwmzp6N6vZqfUKD4)
+                next(self._entries(page, playlist_id))
+            except StopIteration:
+                has_videos = False
+
+        playlist = self.playlist_result(
+            self._entries(page, playlist_id), playlist_id, playlist_title)
+        playlist.update({
+            'uploader': uploader,
+            'uploader_id': uploader_id,
+            'uploader_url': uploader_url,
+        })
+
+        return has_videos, playlist
+
+    def _check_download_just_video(self, url, playlist_id):

         # Check if it's a video-specific URL
         query_dict = compat_urlparse.parse_qs(compat_urlparse.urlparse(url).query)
         # Check if it's a video-specific URL
         query_dict = compat_urlparse.parse_qs(compat_urlparse.urlparse(url).query)

-        if 'v' in query_dict:
-            video_id = query_dict['v'][0]
+        video_id = query_dict.get('v', [None])[0] or self._search_regex(
+            r'(?:(?:^|//)youtu\.be/|youtube\.com/embed/(?!videoseries))([0-9A-Za-z_-]{11})', url,
+            'video id', default=None)
+        if video_id:

             if self._downloader.params.get('noplaylist'):
                 self.to_screen('Downloading just video %s because of --no-playlist' % video_id)
             if self._downloader.params.get('noplaylist'):
                 self.to_screen('Downloading just video %s because of --no-playlist' % video_id)

-                return self.url_result(video_id, 'Youtube', video_id=video_id)
+                return video_id, self.url_result(video_id, 'Youtube', video_id=video_id)

             else:
                 self.to_screen('Downloading playlist %s - add --no-playlist to just download video %s' % (playlist_id, video_id))
             else:
                 self.to_screen('Downloading playlist %s - add --no-playlist to just download video %s' % (playlist_id, video_id))

+                return video_id, None
+        return None, None

 
 

-        if playlist_id.startswith('RD'):
-            # Mixes require a custom extraction process
-            return self._extract_mix(playlist_id)
-        if playlist_id.startswith('TL'):
-            raise ExtractorError('For downloading YouTube.com top lists, use '
-                                 'the "yttoplist" keyword, for example "youtube-dl \'yttoplist:music:Top Tracks\'"', expected=True)
-
-        url = self._TEMPLATE_URL % playlist_id
-        page = self._download_webpage(url, playlist_id)
-        more_widget_html = content_html = page
-
-        # Check if the playlist exists or is private
-        if re.search(r'<div class="yt-alert-message">[^<]*?(The|This) playlist (does not exist|is private)[^<]*?</div>', page) is not None:
-            raise ExtractorError(
-                'The playlist doesn\'t exist or is private, use --username or '
-                '--netrc to access it.',
-                expected=True)
-
-        # Extract the video ids from the playlist pages
-        ids = []
-
-        for page_num in itertools.count(1):
-            matches = re.finditer(self._VIDEO_RE, content_html)
-            # We remove the duplicates and the link with index 0
-            # (it's not the first video of the playlist)
-            new_ids = orderedSet(m.group('id') for m in matches if m.group('index') != '0')
-            ids.extend(new_ids)
-
-            mobj = re.search(r'data-uix-load-more-href="/?(?P<more>[^"]+)"', more_widget_html)
-            if not mobj:
-                break
-
-            more = self._download_json(
-                'https://youtube.com/%s' % mobj.group('more'), playlist_id,
-                'Downloading page #%s' % page_num,
-                transform_source=uppercase_escape)
-            content_html = more['content_html']
-            more_widget_html = more['load_more_widget_html']
-
-        playlist_title = self._html_search_regex(
-            r'(?s)<h1 class="pl-header-title[^"]*">\s*(.*?)\s*</h1>',
-            page, 'title')
-
-        url_results = self._ids_to_results(ids)
-        return self.playlist_result(url_results, playlist_id, playlist_title)
+    def _real_extract(self, url):
+        # Extract playlist id
+        mobj = re.match(self._VALID_URL, url)
+        if mobj is None:
+            raise ExtractorError('Invalid URL: %s' % url)
+        playlist_id = mobj.group(1) or mobj.group(2)

 
 

+        video_id, video = self._check_download_just_video(url, playlist_id)
+        if video:
+            return video

 
 

-class YoutubeTopListIE(YoutubePlaylistIE):
-    IE_NAME = 'youtube:toplist'
-    IE_DESC = ('YouTube.com top lists, "yttoplist:{channel}:{list title}"'
-               ' (Example: "yttoplist:music:Top Tracks")')
-    _VALID_URL = r'yttoplist:(?P<chann>.*?):(?P<title>.*?)$'
-    _TESTS = [{
-        'url': 'yttoplist:music:Trending',
-        'playlist_mincount': 5,
-        'skip': 'Only works for logged-in users',
-    }]
+        if playlist_id.startswith(('RD', 'UL', 'PU')):
+            # Mixes require a custom extraction process
+            return self._extract_mix(playlist_id)

 
 

-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        channel = mobj.group('chann')
-        title = mobj.group('title')
-        query = compat_urllib_parse.urlencode({'title': title})
-        channel_page = self._download_webpage(
-            'https://www.youtube.com/%s' % channel, title)
-        link = self._html_search_regex(
-            r'''(?x)
-                <a\s+href="([^"]+)".*?>\s*
-                <span\s+class="branded-page-module-title-text">\s*
-                <span[^>]*>.*?%s.*?</span>''' % re.escape(query),
-            channel_page, 'list')
-        url = compat_urlparse.urljoin('https://www.youtube.com/', link)
+        has_videos, playlist = self._extract_playlist(playlist_id)
+        if has_videos or not video_id:
+            return playlist

 
 

-        video_re = r'data-index="\d+".*?data-video-id="([0-9A-Za-z_-]{11})"'
-        ids = []
-        # sometimes the webpage doesn't contain the videos
-        # retry until we get them
-        for i in itertools.count(0):
-            msg = 'Downloading Youtube mix'
-            if i > 0:
-                msg += ', retry #%d' % i
-
-            webpage = self._download_webpage(url, title, msg)
-            ids = orderedSet(re.findall(video_re, webpage))
-            if ids:
-                break
-        url_results = self._ids_to_results(ids)
-        return self.playlist_result(url_results, playlist_title=title)
+        # Some playlist URLs don't actually serve a playlist (see
+        # https://github.com/ytdl-org/youtube-dl/issues/10537).
+        # Fallback to plain video extraction if there is a video id
+        # along with playlist id.
+        return self.url_result(video_id, 'Youtube', video_id=video_id)

 
 
 
 

-class YoutubeChannelIE(InfoExtractor):
+class YoutubeChannelIE(YoutubePlaylistBaseInfoExtractor):

     IE_DESC = 'YouTube.com channels'
     IE_DESC = 'YouTube.com channels'

-    _VALID_URL = r"^(?:https?://)?(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com)/channel/([0-9A-Za-z_-]+)"
-    _MORE_PAGES_INDICATOR = 'yt-uix-load-more'
-    _MORE_PAGES_URL = 'https://www.youtube.com/c4_browse_ajax?action_load_more_videos=1&flow=list&paging=%s&view=0&sort=da&channel_id=%s'
+    _VALID_URL = r'https?://(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com|(?:www\.)?invidio\.us)/channel/(?P<id>[0-9A-Za-z_-]+)'
+    _TEMPLATE_URL = 'https://www.youtube.com/channel/%s/videos'
+    _VIDEO_RE = r'(?:title="(?P<title>[^"]+)"[^>]+)?href="/watch\?v=(?P<id>[0-9A-Za-z_-]+)&?'

     IE_NAME = 'youtube:channel'
     _TESTS = [{
         'note': 'paginated channel',
         'url': 'https://www.youtube.com/channel/UCKfVa3S1e4PHvxWcwyMMg8w',
         'playlist_mincount': 91,
     IE_NAME = 'youtube:channel'
     _TESTS = [{
         'note': 'paginated channel',
         'url': 'https://www.youtube.com/channel/UCKfVa3S1e4PHvxWcwyMMg8w',
         'playlist_mincount': 91,

+        'info_dict': {
+            'id': 'UUKfVa3S1e4PHvxWcwyMMg8w',
+            'title': 'Uploads from lex will',
+        }
+    }, {
+        'note': 'Age restricted channel',
+        # from https://www.youtube.com/user/DeusExOfficial
+        'url': 'https://www.youtube.com/channel/UCs0ifCMCm1icqRbqhUINa0w',
+        'playlist_mincount': 64,
+        'info_dict': {
+            'id': 'UUs0ifCMCm1icqRbqhUINa0w',
+            'title': 'Uploads from Deus Ex',
+        },
+    }, {
+        'url': 'https://invidio.us/channel/UC23qupoDRn9YOAVzeoxjOQA',
+        'only_matching': True,

     }]
 
     }]
 

-    def extract_videos_from_page(self, page):
-        ids_in_page = []
-        for mobj in re.finditer(r'href="/watch\?v=([0-9A-Za-z_-]+)&?', page):
-            if mobj.group(1) not in ids_in_page:
-                ids_in_page.append(mobj.group(1))
-        return ids_in_page
+    @classmethod
+    def suitable(cls, url):
+        return (False if YoutubePlaylistsIE.suitable(url) or YoutubeLiveIE.suitable(url)
+                else super(YoutubeChannelIE, cls).suitable(url))
+
+    def _build_template_url(self, url, channel_id):
+        return self._TEMPLATE_URL % channel_id

 
     def _real_extract(self, url):
 
     def _real_extract(self, url):

-        # Extract channel id
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError('Invalid URL: %s' % url)
+        channel_id = self._match_id(url)
+
+        url = self._build_template_url(url, channel_id)

 
 

-        # Download channel page
-        channel_id = mobj.group(1)
-        video_ids = []
-        url = 'https://www.youtube.com/channel/%s/videos' % channel_id
-        channel_page = self._download_webpage(url, channel_id)
+        # Channel by page listing is restricted to 35 pages of 30 items, i.e. 1050 videos total (see #5778)
+        # Workaround by extracting as a playlist if managed to obtain channel playlist URL
+        # otherwise fallback on channel by page extraction
+        channel_page = self._download_webpage(
+            url + '?view=57', channel_id,
+            'Downloading channel page', fatal=False)
+        if channel_page is False:
+            channel_playlist_id = False
+        else:
+            channel_playlist_id = self._html_search_meta(
+                'channelId', channel_page, 'channel id', default=None)
+            if not channel_playlist_id:
+                channel_url = self._html_search_meta(
+                    ('al:ios:url', 'twitter:app:url:iphone', 'twitter:app:url:ipad'),
+                    channel_page, 'channel url', default=None)
+                if channel_url:
+                    channel_playlist_id = self._search_regex(
+                        r'vnd\.youtube://user/([0-9A-Za-z_-]+)',
+                        channel_url, 'channel id', default=None)
+        if channel_playlist_id and channel_playlist_id.startswith('UC'):
+            playlist_id = 'UU' + channel_playlist_id[2:]
+            return self.url_result(
+                compat_urlparse.urljoin(url, '/playlist?list=%s' % playlist_id), 'YoutubePlaylist')
+
+        channel_page = self._download_webpage(url, channel_id, 'Downloading page #1')

         autogenerated = re.search(r'''(?x)
                 class="[^"]*?(?:
                     channel-header-autogenerated-label|
         autogenerated = re.search(r'''(?x)
                 class="[^"]*?(?:
                     channel-header-autogenerated-label|


@@ -1262,203 +2753,249 @@ class YoutubeChannelIE(InfoExtractor):
         if autogenerated:
             # The videos are contained in a single page
             # the ajax pages can't be used, they are empty
         if autogenerated:
             # The videos are contained in a single page
             # the ajax pages can't be used, they are empty

-            video_ids = self.extract_videos_from_page(channel_page)
-        else:
-            # Download all channel pages using the json-based channel_ajax query
-            for pagenum in itertools.count(1):
-                url = self._MORE_PAGES_URL % (pagenum, channel_id)
-                page = self._download_json(
-                    url, channel_id, note='Downloading page #%s' % pagenum,
-                    transform_source=uppercase_escape)
-
-                ids_in_page = self.extract_videos_from_page(page['content_html'])
-                video_ids.extend(ids_in_page)
-
-                if self._MORE_PAGES_INDICATOR not in page['load_more_widget_html']:
-                    break
+            entries = [
+                self.url_result(
+                    video_id, 'Youtube', video_id=video_id,
+                    video_title=video_title)
+                for video_id, video_title in self.extract_videos_from_page(channel_page)]
+            return self.playlist_result(entries, channel_id)

 
 

-        self._downloader.to_screen('[youtube] Channel %s: Found %i videos' % (channel_id, len(video_ids)))
+        try:
+            next(self._entries(channel_page, channel_id))
+        except StopIteration:
+            alert_message = self._html_search_regex(
+                r'(?s)<div[^>]+class=(["\']).*?\byt-alert-message\b.*?\1[^>]*>(?P<alert>[^<]+)</div>',
+                channel_page, 'alert', default=None, group='alert')
+            if alert_message:
+                raise ExtractorError('Youtube said: %s' % alert_message, expected=True)

 
 

-        url_entries = [self.url_result(video_id, 'Youtube', video_id=video_id)
-                       for video_id in video_ids]
-        return self.playlist_result(url_entries, channel_id)
+        return self.playlist_result(self._entries(channel_page, channel_id), channel_id)

 
 
 
 

-class YoutubeUserIE(InfoExtractor):
+class YoutubeUserIE(YoutubeChannelIE):

     IE_DESC = 'YouTube.com user videos (URL or "ytuser" keyword)'
     IE_DESC = 'YouTube.com user videos (URL or "ytuser" keyword)'

-    _VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?youtube\.com/(?:user/)?(?!(?:attribution_link|watch|results)(?:$|[^a-z_A-Z0-9-])))|ytuser:)(?!feed/)([A-Za-z0-9_-]+)'
-    _TEMPLATE_URL = 'https://gdata.youtube.com/feeds/api/users/%s'
-    _GDATA_PAGE_SIZE = 50
-    _GDATA_URL = 'https://gdata.youtube.com/feeds/api/users/%s/uploads?max-results=%d&start-index=%d&alt=json'
+    _VALID_URL = r'(?:(?:https?://(?:\w+\.)?youtube\.com/(?:(?P<user>user|c)/)?(?!(?:attribution_link|watch|results|shared)(?:$|[^a-z_A-Z0-9-])))|ytuser:)(?!feed/)(?P<id>[A-Za-z0-9_-]+)'
+    _TEMPLATE_URL = 'https://www.youtube.com/%s/%s/videos'

     IE_NAME = 'youtube:user'
 
     _TESTS = [{
         'url': 'https://www.youtube.com/user/TheLinuxFoundation',
         'playlist_mincount': 320,
         'info_dict': {
     IE_NAME = 'youtube:user'
 
     _TESTS = [{
         'url': 'https://www.youtube.com/user/TheLinuxFoundation',
         'playlist_mincount': 320,
         'info_dict': {

-            'title': 'TheLinuxFoundation',
+            'id': 'UUfX55Sx5hEFjoC3cNs6mCUQ',
+            'title': 'Uploads from The Linux Foundation',
+        }
+    }, {
+        # Only available via https://www.youtube.com/c/12minuteathlete/videos
+        # but not https://www.youtube.com/user/12minuteathlete/videos
+        'url': 'https://www.youtube.com/c/12minuteathlete/videos',
+        'playlist_mincount': 249,
+        'info_dict': {
+            'id': 'UUVjM-zV6_opMDx7WYxnjZiQ',
+            'title': 'Uploads from 12 Minute Athlete',

         }
     }, {
         'url': 'ytuser:phihag',
         'only_matching': True,
         }
     }, {
         'url': 'ytuser:phihag',
         'only_matching': True,

+    }, {
+        'url': 'https://www.youtube.com/c/gametrailers',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/gametrailers',
+        'only_matching': True,
+    }, {
+        # This channel is not available, geo restricted to JP
+        'url': 'https://www.youtube.com/user/kananishinoSMEJ/videos',
+        'only_matching': True,

     }]
 
     @classmethod
     def suitable(cls, url):
         # Don't return True if the url can be extracted with other youtube
         # extractor, the regex would is too permissive and it would match.
     }]
 
     @classmethod
     def suitable(cls, url):
         # Don't return True if the url can be extracted with other youtube
         # extractor, the regex would is too permissive and it would match.

-        other_ies = iter(klass for (name, klass) in globals().items() if name.endswith('IE') and klass is not cls)
-        if any(ie.suitable(url) for ie in other_ies):
+        other_yt_ies = iter(klass for (name, klass) in globals().items() if name.startswith('Youtube') and name.endswith('IE') and klass is not cls)
+        if any(ie.suitable(url) for ie in other_yt_ies):

             return False
         else:
             return super(YoutubeUserIE, cls).suitable(url)
 
             return False
         else:
             return super(YoutubeUserIE, cls).suitable(url)
 

-    def _real_extract(self, url):
-        # Extract username
+    def _build_template_url(self, url, channel_id):

         mobj = re.match(self._VALID_URL, url)
         mobj = re.match(self._VALID_URL, url)

-        if mobj is None:
-            raise ExtractorError('Invalid URL: %s' % url)
+        return self._TEMPLATE_URL % (mobj.group('user') or 'user', mobj.group('id'))

 
 

-        username = mobj.group(1)

 
 

-        # Download video ids using YouTube Data API. Result size per
-        # query is limited (currently to 50 videos) so we need to query
-        # page by page until there are no video ids - it means we got
-        # all of them.
+class YoutubeLiveIE(YoutubeBaseInfoExtractor):
+    IE_DESC = 'YouTube.com live streams'
+    _VALID_URL = r'(?P<base_url>https?://(?:\w+\.)?youtube\.com/(?:(?:user|channel|c)/)?(?P<id>[^/]+))/live'
+    IE_NAME = 'youtube:live'

 
 

-        def download_page(pagenum):
-            start_index = pagenum * self._GDATA_PAGE_SIZE + 1
+    _TESTS = [{
+        'url': 'https://www.youtube.com/user/TheYoungTurks/live',
+        'info_dict': {
+            'id': 'a48o2S1cPoo',
+            'ext': 'mp4',
+            'title': 'The Young Turks - Live Main Show',
+            'uploader': 'The Young Turks',
+            'uploader_id': 'TheYoungTurks',
+            'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/TheYoungTurks',
+            'upload_date': '20150715',
+            'license': 'Standard YouTube License',
+            'description': 'md5:438179573adcdff3c97ebb1ee632b891',
+            'categories': ['News & Politics'],
+            'tags': ['Cenk Uygur (TV Program Creator)', 'The Young Turks (Award-Winning Work)', 'Talk Show (TV Genre)'],
+            'like_count': int,
+            'dislike_count': int,
+        },
+        'params': {
+            'skip_download': True,
+        },
+    }, {
+        'url': 'https://www.youtube.com/channel/UC1yBKRuGpC1tSM73A0ZjYjQ/live',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/c/CommanderVideoHq/live',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/TheYoungTurks/live',
+        'only_matching': True,
+    }]

 
 

-            gdata_url = self._GDATA_URL % (username, self._GDATA_PAGE_SIZE, start_index)
-            page = self._download_webpage(
-                gdata_url, username,
-                'Downloading video ids from %d to %d' % (
-                    start_index, start_index + self._GDATA_PAGE_SIZE))
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        channel_id = mobj.group('id')
+        base_url = mobj.group('base_url')
+        webpage = self._download_webpage(url, channel_id, fatal=False)
+        if webpage:
+            page_type = self._og_search_property(
+                'type', webpage, 'page type', default='')
+            video_id = self._html_search_meta(
+                'videoId', webpage, 'video id', default=None)
+            if page_type.startswith('video') and video_id and re.match(
+                    r'^[0-9A-Za-z_-]{11}$', video_id):
+                return self.url_result(video_id, YoutubeIE.ie_key())
+        return self.url_result(base_url)
+
+
+class YoutubePlaylistsIE(YoutubePlaylistsBaseInfoExtractor):
+    IE_DESC = 'YouTube.com user/channel playlists'
+    _VALID_URL = r'https?://(?:\w+\.)?youtube\.com/(?:user|channel)/(?P<id>[^/]+)/playlists'
+    IE_NAME = 'youtube:playlists'

 
 

-            try:
-                response = json.loads(page)
-            except ValueError as err:
-                raise ExtractorError('Invalid JSON in API response: ' + compat_str(err))
-            if 'entry' not in response['feed']:
-                return
-
-            # Extract video identifiers
-            entries = response['feed']['entry']
-            for entry in entries:
-                title = entry['title']['$t']
-                video_id = entry['id']['$t'].split('/')[-1]
-                yield {
-                    '_type': 'url',
-                    'url': video_id,
-                    'ie_key': 'Youtube',
-                    'id': video_id,
-                    'title': title,
-                }
-        url_results = OnDemandPagedList(download_page, self._GDATA_PAGE_SIZE)
+    _TESTS = [{
+        'url': 'https://www.youtube.com/user/ThirstForScience/playlists',
+        'playlist_mincount': 4,
+        'info_dict': {
+            'id': 'ThirstForScience',
+            'title': 'Thirst for Science',
+        },
+    }, {
+        # with "Load more" button
+        'url': 'https://www.youtube.com/user/igorkle1/playlists?view=1&sort=dd',
+        'playlist_mincount': 70,
+        'info_dict': {
+            'id': 'igorkle1',
+            'title': 'Игорь Клейнер',
+        },
+    }, {
+        'url': 'https://www.youtube.com/channel/UCiU1dHvZObB2iP6xkJ__Icw/playlists',
+        'playlist_mincount': 17,
+        'info_dict': {
+            'id': 'UCiU1dHvZObB2iP6xkJ__Icw',
+            'title': 'Chem Player',
+        },
+    }]

 
 

-        return self.playlist_result(url_results, playlist_title=username)

 
 

+class YoutubeSearchBaseInfoExtractor(YoutubePlaylistBaseInfoExtractor):
+    _VIDEO_RE = r'href="\s*/watch\?v=(?P<id>[0-9A-Za-z_-]{11})(?:[^"]*"[^>]+\btitle="(?P<title>[^"]+))?'

 
 

-class YoutubeSearchIE(SearchInfoExtractor):
+
+class YoutubeSearchIE(SearchInfoExtractor, YoutubeSearchBaseInfoExtractor):

     IE_DESC = 'YouTube.com searches'
     IE_DESC = 'YouTube.com searches'

-    _API_URL = 'https://gdata.youtube.com/feeds/api/videos?q=%s&start-index=%i&max-results=50&v=2&alt=jsonc'
-    _MAX_RESULTS = 1000
+    # there doesn't appear to be a real limit, for example if you search for
+    # 'python' you get more than 8.000.000 results
+    _MAX_RESULTS = float('inf')

     IE_NAME = 'youtube:search'
     _SEARCH_KEY = 'ytsearch'
     IE_NAME = 'youtube:search'
     _SEARCH_KEY = 'ytsearch'

+    _EXTRA_QUERY_ARGS = {}
+    _TESTS = []

 
     def _get_n_results(self, query, n):
         """Get a specified number of results for a query"""
 
 
     def _get_n_results(self, query, n):
         """Get a specified number of results for a query"""
 

-        video_ids = []
-        pagenum = 0
+        videos = []

         limit = n
         limit = n

-        PAGE_SIZE = 50

 
 

-        while (PAGE_SIZE * pagenum) < limit:
-            result_url = self._API_URL % (
-                compat_urllib_parse.quote_plus(query.encode('utf-8')),
-                (PAGE_SIZE * pagenum) + 1)
-            data_json = self._download_webpage(
+        url_query = {
+            'search_query': query.encode('utf-8'),
+        }
+        url_query.update(self._EXTRA_QUERY_ARGS)
+        result_url = 'https://www.youtube.com/results?' + compat_urllib_parse_urlencode(url_query)
+
+        for pagenum in itertools.count(1):
+            data = self._download_json(

                 result_url, video_id='query "%s"' % query,
                 result_url, video_id='query "%s"' % query,

-                note='Downloading page %s' % (pagenum + 1),
-                errnote='Unable to download API page')
-            data = json.loads(data_json)
-            api_response = data['data']
+                note='Downloading page %s' % pagenum,
+                errnote='Unable to download API page',
+                query={'spf': 'navigate'})
+            html_content = data[1]['body']['content']

 
 

-            if 'items' not in api_response:
+            if 'class="search-message' in html_content:

                 raise ExtractorError(
                     '[youtube] No video results', expected=True)
 
                 raise ExtractorError(
                     '[youtube] No video results', expected=True)
 

-            new_ids = list(video['id'] for video in api_response['items'])
-            video_ids += new_ids
-
-            limit = min(n, api_response['totalItems'])
-            pagenum += 1
+            new_videos = list(self._process_page(html_content))
+            videos += new_videos
+            if not new_videos or len(videos) > limit:
+                break
+            next_link = self._html_search_regex(
+                r'href="(/results\?[^"]*\bsp=[^"]+)"[^>]*>\s*<span[^>]+class="[^"]*\byt-uix-button-content\b[^"]*"[^>]*>Next',
+                html_content, 'next link', default=None)
+            if next_link is None:
+                break
+            result_url = compat_urlparse.urljoin('https://www.youtube.com/', next_link)

 
 

-        if len(video_ids) > n:
-            video_ids = video_ids[:n]
-        videos = [self.url_result(video_id, 'Youtube', video_id=video_id)
-                  for video_id in video_ids]
+        if len(videos) > n:
+            videos = videos[:n]

         return self.playlist_result(videos, query)
 
 
 class YoutubeSearchDateIE(YoutubeSearchIE):
     IE_NAME = YoutubeSearchIE.IE_NAME + ':date'
         return self.playlist_result(videos, query)
 
 
 class YoutubeSearchDateIE(YoutubeSearchIE):
     IE_NAME = YoutubeSearchIE.IE_NAME + ':date'

-    _API_URL = 'https://gdata.youtube.com/feeds/api/videos?q=%s&start-index=%i&max-results=50&v=2&alt=jsonc&orderby=published'

     _SEARCH_KEY = 'ytsearchdate'
     IE_DESC = 'YouTube.com searches, newest videos first'
     _SEARCH_KEY = 'ytsearchdate'
     IE_DESC = 'YouTube.com searches, newest videos first'

+    _EXTRA_QUERY_ARGS = {'search_sort': 'video_date_uploaded'}

 
 
 
 

-class YoutubeSearchURLIE(InfoExtractor):
+class YoutubeSearchURLIE(YoutubeSearchBaseInfoExtractor):

     IE_DESC = 'YouTube.com search URLs'
     IE_NAME = 'youtube:search_url'
     IE_DESC = 'YouTube.com search URLs'
     IE_NAME = 'youtube:search_url'

-    _VALID_URL = r'https?://(?:www\.)?youtube\.com/results\?(.*?&)?search_query=(?P<query>[^&]+)(?:[&]|$)'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/results\?(.*?&)?(?:search_query|q)=(?P<query>[^&]+)(?:[&]|$)'

     _TESTS = [{
         'url': 'https://www.youtube.com/results?baz=bar&search_query=youtube-dl+test+video&filters=video&lclk=video',
         'playlist_mincount': 5,
         'info_dict': {
             'title': 'youtube-dl test video',
         }
     _TESTS = [{
         'url': 'https://www.youtube.com/results?baz=bar&search_query=youtube-dl+test+video&filters=video&lclk=video',
         'playlist_mincount': 5,
         'info_dict': {
             'title': 'youtube-dl test video',
         }

+    }, {
+        'url': 'https://www.youtube.com/results?q=test&sp=EgQIBBgB',
+        'only_matching': True,

     }]
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
     }]
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)

-        query = compat_urllib_parse.unquote_plus(mobj.group('query'))
-
+        query = compat_urllib_parse_unquote_plus(mobj.group('query'))

         webpage = self._download_webpage(url, query)
         webpage = self._download_webpage(url, query)

-        result_code = self._search_regex(
-            r'(?s)<ol class="item-section"(.*?)</ol>', webpage, 'result HTML')
-
-        part_codes = re.findall(
-            r'(?s)<h3 class="yt-lockup-title">(.*?)</h3>', result_code)
-        entries = []
-        for part_code in part_codes:
-            part_title = self._html_search_regex(
-                [r'(?s)title="([^"]+)"', r'>([^<]+)</a>'], part_code, 'item title', fatal=False)
-            part_url_snippet = self._html_search_regex(
-                r'(?s)href="([^"]+)"', part_code, 'item URL')
-            part_url = compat_urlparse.urljoin(
-                'https://www.youtube.com/', part_url_snippet)
-            entries.append({
-                '_type': 'url',
-                'url': part_url,
-                'title': part_title,
-            })
-
-        return {
-            '_type': 'playlist',
-            'entries': entries,
-            'title': query,
-        }
+        return self.playlist_result(self._process_page(webpage), playlist_title=query)

 
 
 
 

-class YoutubeShowIE(InfoExtractor):
+class YoutubeShowIE(YoutubePlaylistsBaseInfoExtractor):

     IE_DESC = 'YouTube.com (multi-season) shows'
     IE_DESC = 'YouTube.com (multi-season) shows'

-    _VALID_URL = r'https?://www\.youtube\.com/show/(?P<id>[^?#]*)'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/show/(?P<id>[^?#]*)'

     IE_NAME = 'youtube:show'
     _TESTS = [{
     IE_NAME = 'youtube:show'
     _TESTS = [{

-        'url': 'http://www.youtube.com/show/airdisasters',
-        'playlist_mincount': 3,
+        'url': 'https://www.youtube.com/show/airdisasters',
+        'playlist_mincount': 5,

         'info_dict': {
             'id': 'airdisasters',
             'title': 'Air Disasters',
         'info_dict': {
             'id': 'airdisasters',
             'title': 'Air Disasters',


@@ -1466,44 +3003,17 @@ class YoutubeShowIE(InfoExtractor):
     }]
 
     def _real_extract(self, url):
     }]
 
     def _real_extract(self, url):

-        mobj = re.match(self._VALID_URL, url)
-        playlist_id = mobj.group('id')
-        webpage = self._download_webpage(
-            url, playlist_id, 'Downloading show webpage')
-        # There's one playlist for each season of the show
-        m_seasons = list(re.finditer(r'href="(/playlist\?list=.*?)"', webpage))
-        self.to_screen('%s: Found %s seasons' % (playlist_id, len(m_seasons)))
-        entries = [
-            self.url_result(
-                'https://www.youtube.com' + season.group(1), 'YoutubePlaylist')
-            for season in m_seasons
-        ]
-        title = self._og_search_title(webpage, fatal=False)
-
-        return {
-            '_type': 'playlist',
-            'id': playlist_id,
-            'title': title,
-            'entries': entries,
-        }
+        playlist_id = self._match_id(url)
+        return super(YoutubeShowIE, self)._real_extract(
+            'https://www.youtube.com/show/%s/playlists' % playlist_id)

 
 
 class YoutubeFeedsInfoExtractor(YoutubeBaseInfoExtractor):
     """
 
 
 class YoutubeFeedsInfoExtractor(YoutubeBaseInfoExtractor):
     """

-    Base class for extractors that fetch info from
-    http://www.youtube.com/feed_ajax
+    Base class for feed extractors

     Subclasses must define the _FEED_NAME and _PLAYLIST_TITLE properties.
     """
     _LOGIN_REQUIRED = True
     Subclasses must define the _FEED_NAME and _PLAYLIST_TITLE properties.
     """
     _LOGIN_REQUIRED = True

-    # use action_load_personal_feed instead of action_load_system_feed
-    _PERSONAL_FEED = False
-
-    @property
-    def _FEED_TEMPLATE(self):
-        action = 'action_load_system_feed'
-        if self._PERSONAL_FEED:
-            action = 'action_load_personal_feed'
-        return 'https://www.youtube.com/feed_ajax?%s=1&feed_name=%s&paging=%%s' % (action, self._FEED_NAME)

 
     @property
     def IE_NAME(self):
 
     @property
     def IE_NAME(self):


@@ -1512,56 +3022,70 @@ class YoutubeFeedsInfoExtractor(YoutubeBaseInfoExtractor):
     def _real_initialize(self):
         self._login()
 
     def _real_initialize(self):
         self._login()
 

-    def _real_extract(self, url):
-        feed_entries = []
-        paging = 0
-        for i in itertools.count(1):
-            info = self._download_json(self._FEED_TEMPLATE % paging,
-                                       '%s feed' % self._FEED_NAME,
-                                       'Downloading page %s' % i)
-            feed_html = info.get('feed_html') or info.get('content_html')
-            load_more_widget_html = info.get('load_more_widget_html') or feed_html
-            m_ids = re.finditer(r'"/watch\?v=(.*?)["&]', feed_html)
-            ids = orderedSet(m.group(1) for m in m_ids)
-            feed_entries.extend(
-                self.url_result(video_id, 'Youtube', video_id=video_id)
-                for video_id in ids)
-            mobj = re.search(
-                r'data-uix-load-more-href="/?[^"]+paging=(?P<paging>\d+)',
-                load_more_widget_html)
-            if mobj is None:
+    def _entries(self, page):
+        # The extraction process is the same as for playlists, but the regex
+        # for the video ids doesn't contain an index
+        ids = []
+        more_widget_html = content_html = page
+        for page_num in itertools.count(1):
+            matches = re.findall(r'href="\s*/watch\?v=([0-9A-Za-z_-]{11})', content_html)
+
+            # 'recommended' feed has infinite 'load more' and each new portion spins
+            # the same videos in (sometimes) slightly different order, so we'll check
+            # for unicity and break when portion has no new videos
+            new_ids = list(filter(lambda video_id: video_id not in ids, orderedSet(matches)))
+            if not new_ids:

                 break
                 break

-            paging = mobj.group('paging')
-        return self.playlist_result(feed_entries, playlist_title=self._PLAYLIST_TITLE)

 
 

+            ids.extend(new_ids)

 
 

-class YoutubeRecommendedIE(YoutubeFeedsInfoExtractor):
-    IE_DESC = 'YouTube.com recommended videos, ":ytrec" for short (requires authentication)'
-    _VALID_URL = r'https?://www\.youtube\.com/feed/recommended|:ytrec(?:ommended)?'
-    _FEED_NAME = 'recommended'
-    _PLAYLIST_TITLE = 'Youtube Recommended videos'
+            for entry in self._ids_to_results(new_ids):
+                yield entry
+
+            mobj = re.search(r'data-uix-load-more-href="/?(?P<more>[^"]+)"', more_widget_html)
+            if not mobj:
+                break
+
+            more = self._download_json(
+                'https://youtube.com/%s' % mobj.group('more'), self._PLAYLIST_TITLE,
+                'Downloading page #%s' % page_num,
+                transform_source=uppercase_escape)
+            content_html = more['content_html']
+            more_widget_html = more['load_more_widget_html']
+
+    def _real_extract(self, url):
+        page = self._download_webpage(
+            'https://www.youtube.com/feed/%s' % self._FEED_NAME,
+            self._PLAYLIST_TITLE)
+        return self.playlist_result(
+            self._entries(page), playlist_title=self._PLAYLIST_TITLE)

 
 
 
 

-class YoutubeWatchLaterIE(YoutubeFeedsInfoExtractor):
+class YoutubeWatchLaterIE(YoutubePlaylistIE):
+    IE_NAME = 'youtube:watchlater'

     IE_DESC = 'Youtube watch later list, ":ytwatchlater" for short (requires authentication)'
     IE_DESC = 'Youtube watch later list, ":ytwatchlater" for short (requires authentication)'

-    _VALID_URL = r'https?://www\.youtube\.com/feed/watch_later|:ytwatchlater'
-    _FEED_NAME = 'watch_later'
-    _PLAYLIST_TITLE = 'Youtube Watch Later'
-    _PERSONAL_FEED = True
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/(?:feed/watch_later|(?:playlist|watch)\?(?:.+&)?list=WL)|:ytwatchlater'

 
 

+    _TESTS = [{
+        'url': 'https://www.youtube.com/playlist?list=WL',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/watch?v=bCNU9TrbiRk&index=1&list=WL',
+        'only_matching': True,
+    }]

 
 

-class YoutubeHistoryIE(YoutubeFeedsInfoExtractor):
-    IE_DESC = 'Youtube watch history, ":ythistory" for short (requires authentication)'
-    _VALID_URL = 'https?://www\.youtube\.com/feed/history|:ythistory'
-    _FEED_NAME = 'history'
-    _PERSONAL_FEED = True
-    _PLAYLIST_TITLE = 'Youtube Watch History'
+    def _real_extract(self, url):
+        _, video = self._check_download_just_video(url, 'WL')
+        if video:
+            return video
+        _, playlist = self._extract_playlist('WL')
+        return playlist

 
 
 class YoutubeFavouritesIE(YoutubeBaseInfoExtractor):
     IE_NAME = 'youtube:favorites'
     IE_DESC = 'YouTube.com favourite videos, ":ytfav" for short (requires authentication)'
 
 
 class YoutubeFavouritesIE(YoutubeBaseInfoExtractor):
     IE_NAME = 'youtube:favorites'
     IE_DESC = 'YouTube.com favourite videos, ":ytfav" for short (requires authentication)'

-    _VALID_URL = r'https?://www\.youtube\.com/my_favorites|:ytfav(?:ou?rites)?'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/my_favorites|:ytfav(?:ou?rites)?'

     _LOGIN_REQUIRED = True
 
     def _real_extract(self, url):
     _LOGIN_REQUIRED = True
 
     def _real_extract(self, url):


@@ -1570,60 +3094,63 @@ class YoutubeFavouritesIE(YoutubeBaseInfoExtractor):
         return self.url_result(playlist_id, 'YoutubePlaylist')
 
 
         return self.url_result(playlist_id, 'YoutubePlaylist')
 
 

-class YoutubeSubscriptionsIE(YoutubePlaylistIE):
-    IE_NAME = 'youtube:subscriptions'
-    IE_DESC = 'YouTube.com subscriptions feed, "ytsubs" keyword (requires authentication)'
-    _VALID_URL = r'https?://www\.youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'
-    _TESTS = []
-
-    def _real_extract(self, url):
-        title = 'Youtube Subscriptions'
-        page = self._download_webpage('https://www.youtube.com/feed/subscriptions', title)
+class YoutubeRecommendedIE(YoutubeFeedsInfoExtractor):
+    IE_DESC = 'YouTube.com recommended videos, ":ytrec" for short (requires authentication)'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/recommended|:ytrec(?:ommended)?'
+    _FEED_NAME = 'recommended'
+    _PLAYLIST_TITLE = 'Youtube Recommended videos'

 
 

-        # The extraction process is the same as for playlists, but the regex
-        # for the video ids doesn't contain an index
-        ids = []
-        more_widget_html = content_html = page

 
 

-        for page_num in itertools.count(1):
-            matches = re.findall(r'href="\s*/watch\?v=([0-9A-Za-z_-]{11})', content_html)
-            new_ids = orderedSet(matches)
-            ids.extend(new_ids)
+class YoutubeSubscriptionsIE(YoutubeFeedsInfoExtractor):
+    IE_DESC = 'YouTube.com subscriptions feed, "ytsubs" keyword (requires authentication)'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'
+    _FEED_NAME = 'subscriptions'
+    _PLAYLIST_TITLE = 'Youtube Subscriptions'

 
 

-            mobj = re.search(r'data-uix-load-more-href="/?(?P<more>[^"]+)"', more_widget_html)
-            if not mobj:
-                break

 
 

-            more = self._download_json(
-                'https://youtube.com/%s' % mobj.group('more'), title,
-                'Downloading page #%s' % page_num,
-                transform_source=uppercase_escape)
-            content_html = more['content_html']
-            more_widget_html = more['load_more_widget_html']
-
-        return {
-            '_type': 'playlist',
-            'title': title,
-            'entries': self._ids_to_results(ids),
-        }
+class YoutubeHistoryIE(YoutubeFeedsInfoExtractor):
+    IE_DESC = 'Youtube watch history, ":ythistory" for short (requires authentication)'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/history|:ythistory'
+    _FEED_NAME = 'history'
+    _PLAYLIST_TITLE = 'Youtube History'

 
 
 class YoutubeTruncatedURLIE(InfoExtractor):
     IE_NAME = 'youtube:truncated_url'
     IE_DESC = False  # Do not list
     _VALID_URL = r'''(?x)
 
 
 class YoutubeTruncatedURLIE(InfoExtractor):
     IE_NAME = 'youtube:truncated_url'
     IE_DESC = False  # Do not list
     _VALID_URL = r'''(?x)

-        (?:https?://)?[^/]+/watch\?(?:
+        (?:https?://)?
+        (?:\w+\.)?[yY][oO][uU][tT][uU][bB][eE](?:-nocookie)?\.com/
+        (?:watch\?(?:

             feature=[a-z_]+|
             feature=[a-z_]+|

-            annotation_id=annotation_[^&]+
-        )?$|
-        (?:https?://)?(?:www\.)?youtube\.com/attribution_link\?a=[^&]+$
+            annotation_id=annotation_[^&]+|
+            x-yt-cl=[0-9]+|
+            hl=[^&]*|
+            t=[0-9]+
+        )?
+        |
+            attribution_link\?a=[^&]+
+        )
+        $

     '''
 
     _TESTS = [{
     '''
 
     _TESTS = [{

-        'url': 'http://www.youtube.com/watch?annotation_id=annotation_3951667041',
+        'url': 'https://www.youtube.com/watch?annotation_id=annotation_3951667041',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/watch?',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/watch?x-yt-cl=84503534',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/watch?feature=foo',

         'only_matching': True,
     }, {
         'only_matching': True,
     }, {

-        'url': 'http://www.youtube.com/watch?',
+        'url': 'https://www.youtube.com/watch?hl=en-GB',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.youtube.com/watch?t=2372',

         'only_matching': True,
     }]
 
         'only_matching': True,
     }]
 


@@ -1632,6 +3159,23 @@ class YoutubeTruncatedURLIE(InfoExtractor):
             'Did you forget to quote the URL? Remember that & is a meta '
             'character in most shells, so you want to put the URL in quotes, '
             'like  youtube-dl '
             'Did you forget to quote the URL? Remember that & is a meta '
             'character in most shells, so you want to put the URL in quotes, '
             'like  youtube-dl '

-            '"http://www.youtube.com/watch?feature=foo&v=BaW_jenozKc" '
+            '"https://www.youtube.com/watch?feature=foo&v=BaW_jenozKc" '

             ' or simply  youtube-dl BaW_jenozKc  .',
             expected=True)
             ' or simply  youtube-dl BaW_jenozKc  .',
             expected=True)

+
+
+class YoutubeTruncatedIDIE(InfoExtractor):
+    IE_NAME = 'youtube:truncated_id'
+    IE_DESC = False  # Do not list
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/watch\?v=(?P<id>[0-9A-Za-z_-]{1,10})$'
+
+    _TESTS = [{
+        'url': 'https://www.youtube.com/watch?v=N_708QY7Ob',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        raise ExtractorError(
+            'Incomplete YouTube ID %s. URL %s looks truncated.' % (video_id, url),
+            expected=True)