debian/control: Remove mplayer2 from recommends. (Closes: #841187)

[youtubedl] / youtube_dl / extractor / youtube.py

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 3d8b31f9830b218e02021b41214010b4f61d29a9..bd24a28389bf847f1e72451e232bfab0807809d8 100644 (file)
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -6,6 +6,7 @@ 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
 import re
 import time
 import traceback


@@ -16,25 +17,34 @@ from ..swfinterp import SWFInterpreter
 from ..compat import (
     compat_chr,
     compat_parse_qs,
 from ..compat import (
     compat_chr,
     compat_parse_qs,

-    compat_urllib_parse,

     compat_urllib_parse_unquote,
     compat_urllib_parse_unquote_plus,
     compat_urllib_parse_unquote,
     compat_urllib_parse_unquote_plus,

-    compat_urllib_request,
+    compat_urllib_parse_urlencode,
+    compat_urllib_parse_urlparse,

     compat_urlparse,
     compat_str,
 )
 from ..utils import (
     clean_html,
     compat_urlparse,
     compat_str,
 )
 from ..utils import (
     clean_html,

+    error_to_compat_str,

     ExtractorError,
     float_or_none,
     get_element_by_attribute,
     get_element_by_id,
     int_or_none,
     ExtractorError,
     float_or_none,
     get_element_by_attribute,
     get_element_by_id,
     int_or_none,

+    mimetype2ext,

     orderedSet,
     orderedSet,

+    parse_duration,
+    remove_quotes,
+    remove_start,
+    sanitized_Request,
+    smuggle_url,

     str_to_int,
     unescapeHTML,
     unified_strdate,
     str_to_int,
     unescapeHTML,
     unified_strdate,

+    unsmuggle_url,

     uppercase_escape,
     uppercase_escape,

+    urlencode_postdata,

     ISO3166Utils,
 )
 
     ISO3166Utils,
 )
 


@@ -42,7 +52,8 @@ from ..utils import (
 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'
+    _PASSWORD_CHALLENGE_URL = 'https://accounts.google.com/signin/challenge/sl/password'

     _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


@@ -80,88 +91,54 @@ 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')
+        login_form = self._hidden_inputs(login_page)

 
 

-        # Log in
-        login_form_strs = {
-            'continue': 'https://www.youtube.com/signin?action_handle_signin=true&feature=sign_in_button&hl=en_US&nomobiletemp=1',
+        login_form.update({
+            'checkConnection': 'youtube',

             'Email': username,
             'Email': username,

-            'GALX': galx,

             'Passwd': password,
             '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',
-        }
-
-        # 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')
-
-        req = compat_urllib_request.Request(self._LOGIN_URL, login_data)

         login_results = self._download_webpage(
         login_results = self._download_webpage(

-            req, None,
-            note='Logging in', errnote='unable to log in', fatal=False)
+            self._PASSWORD_CHALLENGE_URL, None,
+            note='Logging in', errnote='unable to log in', fatal=False,
+            data=urlencode_postdata(login_form))

         if login_results is False:
             return False
 
         if login_results is False:
             return False
 

+        error_msg = self._html_search_regex(
+            r'<[^>]+id="errormsg_0_Passwd"[^>]*>([^<]+)<',
+            login_results, 'error message', default=None)
+        if error_msg:
+            raise ExtractorError('Unable to login: %s' % error_msg, expected=True)
+

         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)
 
         # Two-Factor
         # TODO add SMS and phone call support - these require making a request and then prompting the user
 
         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)
 
         # Two-Factor
         # TODO add SMS and phone call support - these require making a request and then prompting the user
 

-        if re.search(r'(?i)<form[^>]* id="gaia_secondfactorform"', login_results) is not None:
-            tfa_code = self._get_tfa_info()
+        if re.search(r'(?i)<form[^>]+id="challenge"', login_results) is not None:
+            tfa_code = self._get_tfa_info('2-step verification code')

 
 

-            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.)')
+            if not tfa_code:
+                self._downloader.report_warning(
+                    '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
 
                 return False
 

-            # 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')
+            tfa_code = remove_start(tfa_code, 'G-')
+
+            tfa_form_strs = self._form_hidden_inputs('challenge', login_results)

 
 

-            tfa_req = compat_urllib_request.Request(self._TWOFACTOR_URL, tfa_data)
+            tfa_form_strs.update({
+                'Pin': tfa_code,
+                'TrustDevice': 'on',
+            })
+
+            tfa_data = urlencode_postdata(tfa_form_strs)
+
+            tfa_req = sanitized_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)
             tfa_results = self._download_webpage(
                 tfa_req, None,
                 note='Submitting TFA code', errnote='unable to submit tfa', fatal=False)


@@ -169,17 +146,17 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
             if tfa_results is False:
                 return False
 
             if tfa_results is False:
                 return False
 

-            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.')
+            if re.search(r'(?i)<form[^>]+id="challenge"', tfa_results) is not None:
+                self._downloader.report_warning('Two-factor code expired or invalid. Please try again, or use a one-use backup code instead.')

                 return False
                 return False

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


@@ -192,6 +169,71 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
             return
 
 
             return
 
 

+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
+
+            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']
+            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)^
 class YoutubeIE(YoutubeBaseInfoExtractor):
     IE_DESC = 'YouTube.com'
     _VALID_URL = r"""(?x)^


@@ -209,139 +251,161 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                              |(?:                                             # 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=)                                            # combined list/video URLs are handled by the playlist IE

                      (?(1).+)?                                                # if we found the ID, everything can follow
                      $"""
     _NEXT_URL_RE = r'[\?&]next_url=([^&]+)'
     _formats = {
                      (?(1).+)?                                                # if we found the ID, everything can follow
                      $"""
     _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},
-        '59': {'ext': 'mp4', 'width': 854, 'height': 480},
-        '78': {'ext': 'mp4', 'width': 854, 'height': 480},
-
-
-        # 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', 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40},  # Height can vary (https://github.com/rg3/youtube-dl/issues/4559)
-        '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', 'preference': -40},
+        '134': {'ext': 'mp4', 'height': 360, 'format_note': 'DASH video', 'vcodec': 'h264', 'preference': -40},
+        '135': {'ext': 'mp4', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'h264', 'preference': -40},
+        '136': {'ext': 'mp4', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'h264', 'preference': -40},
+        '137': {'ext': 'mp4', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'h264', 'preference': -40},
+        '138': {'ext': 'mp4', 'format_note': 'DASH video', 'vcodec': 'h264', 'preference': -40},  # Height can vary (https://github.com/rg3/youtube-dl/issues/4559)
+        '160': {'ext': 'mp4', 'height': 144, 'format_note': 'DASH video', 'vcodec': 'h264', 'preference': -40},
+        '264': {'ext': 'mp4', 'height': 1440, 'format_note': 'DASH video', 'vcodec': 'h264', 'preference': -40},
+        '298': {'ext': 'mp4', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'h264', 'fps': 60, 'preference': -40},
+        '299': {'ext': 'mp4', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'h264', 'fps': 60, 'preference': -40},
+        '266': {'ext': 'mp4', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'h264', 'preference': -40},

 
         # Dash mp4 audio
 
         # Dash mp4 audio

-        '139': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'vcodec': 'none', 'abr': 48, 'preference': -50, 'container': 'm4a_dash'},
-        '140': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'vcodec': 'none', 'abr': 128, 'preference': -50, 'container': 'm4a_dash'},
-        '141': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'vcodec': 'none', 'abr': 256, 'preference': -50, 'container': 'm4a_dash'},
+        '139': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'abr': 48, 'preference': -50, 'container': 'm4a_dash'},
+        '140': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'abr': 128, 'preference': -50, 'container': 'm4a_dash'},
+        '141': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'abr': 256, 'preference': -50, 'container': 'm4a_dash'},
+        '256': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'preference': -50, 'container': 'm4a_dash'},
+        '258': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'preference': -50, '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'},
-        '308': {'ext': 'webm', 'height': 1440, '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'},
-        '315': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'acodec': 'none', 'preference': -40, 'fps': 60, 'vcodec': 'VP9'},
+        '167': {'ext': 'webm', 'height': 360, 'width': 640, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8', 'preference': -40},
+        '168': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8', 'preference': -40},
+        '169': {'ext': 'webm', 'height': 720, 'width': 1280, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8', 'preference': -40},
+        '170': {'ext': 'webm', 'height': 1080, 'width': 1920, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8', 'preference': -40},
+        '218': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8', 'preference': -40},
+        '219': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8', 'preference': -40},
+        '278': {'ext': 'webm', 'height': 144, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp9', 'preference': -40},
+        '242': {'ext': 'webm', 'height': 240, 'format_note': 'DASH video', 'vcodec': 'vp9', 'preference': -40},
+        '243': {'ext': 'webm', 'height': 360, 'format_note': 'DASH video', 'vcodec': 'vp9', 'preference': -40},
+        '244': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'vp9', 'preference': -40},
+        '245': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'vp9', 'preference': -40},
+        '246': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'vp9', 'preference': -40},
+        '247': {'ext': 'webm', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'vp9', 'preference': -40},
+        '248': {'ext': 'webm', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'vp9', 'preference': -40},
+        '271': {'ext': 'webm', 'height': 1440, 'format_note': 'DASH video', 'vcodec': 'vp9', 'preference': -40},
+        # itag 272 videos are either 3840x2160 (e.g. RtoitU2A-3E) or 7680x4320 (sLprVF6d7Ug)
+        '272': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'vp9', 'preference': -40},
+        '302': {'ext': 'webm', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60, 'preference': -40},
+        '303': {'ext': 'webm', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60, 'preference': -40},
+        '308': {'ext': 'webm', 'height': 1440, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60, 'preference': -40},
+        '313': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'vp9', 'preference': -40},
+        '315': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60, 'preference': -40},

 
         # 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, 'preference': -50},
+        '172': {'ext': 'webm', 'acodec': 'vorbis', 'format_note': 'DASH audio', 'abr': 256, 'preference': -50},

 
         # 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, 'preference': -50},
+        '250': {'ext': 'webm', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 70, 'preference': -50},
+        '251': {'ext': 'webm', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 160, 'preference': -50},

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

+    _SUBTITLE_FORMATS = ('ttml', 'vtt')

 
     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': 're:https?://(?:www\.)?youtube\.com/user/phihag',

                 'upload_date': '20121002',
                 'upload_date': '20121002',

+                'license': 'Standard YouTube License',

                 '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'],
                 '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'],

                 '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'],

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

+                'uploader_url': 're:https?://(?:www\.)?youtube\.com/user/IconaPop',
+                'license': 'Standard YouTube License',
+                'creator': 'Icona Pop',

             }
         },
         {
             }
         },
         {


@@ -352,9 +416,14 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'ext': 'mp4',
                 'upload_date': '20130703',
                 'title': 'Justin Timberlake - Tunnel Vision (Explicit)',
                 'ext': 'mp4',
                 'upload_date': '20130703',
                 'title': 'Justin Timberlake - Tunnel Vision (Explicit)',

+                'alt_title': 'Tunnel Vision',

                 'description': 'md5:64249768eec3bc4276236606ea996373',
                 'uploader': 'justintimberlakeVEVO',
                 'uploader_id': 'justintimberlakeVEVO',
                 'description': 'md5:64249768eec3bc4276236606ea996373',
                 'uploader': 'justintimberlakeVEVO',
                 'uploader_id': 'justintimberlakeVEVO',

+                'uploader_url': 're:https?://(?:www\.)?youtube\.com/user/justintimberlakeVEVO',
+                'license': 'Standard YouTube License',
+                'creator': 'Justin Timberlake',
+                'age_limit': 18,

             }
         },
         {
             }
         },
         {


@@ -367,25 +436,53 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 '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': 're:https?://(?:www\.)?youtube\.com/user/setindia',
+                'license': 'Standard YouTube License',
+                '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': 're:https?://(?:www\.)?youtube\.com/user/phihag',
+                'upload_date': '20121002',
+                'license': 'Standard YouTube License',
+                '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'],
+                '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': 're:https?://(?:www\.)?youtube\.com/user/8KVIDEO',

                 'description': '',
                 'uploader': '8KVIDEO',
                 'description': '',
                 'uploader': '8KVIDEO',

+                'license': 'Standard YouTube License',

                 'title': 'UHDTV TEST 8K VIDEO.mp4'
             },
             'params': {
                 'youtube_include_dash_manifest': True,
                 'format': '141',
             },
                 'title': 'UHDTV TEST 8K VIDEO.mp4'
             },
             'params': {
                 'youtube_include_dash_manifest': True,
                 'format': '141',
             },

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

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


@@ -398,10 +495,11 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'uploader': 'AfrojackVEVO',
                 'uploader_id': 'AfrojackVEVO',
                 'upload_date': '20131011',
                 'uploader': 'AfrojackVEVO',
                 'uploader_id': 'AfrojackVEVO',
                 'upload_date': '20131011',

+                'license': 'Standard YouTube License',

             },
             'params': {
                 'youtube_include_dash_manifest': True,
             },
             'params': {
                 'youtube_include_dash_manifest': True,

-                'format': '141',
+                'format': '141/bestaudio[ext=m4a]',

             },
         },
         # JS player signature function name containing $
             },
         },
         # JS player signature function name containing $


@@ -411,14 +509,17 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'id': 'nfWlot6h_JM',
                 'ext': 'm4a',
                 'title': 'Taylor Swift - Shake It Off',
                 'id': 'nfWlot6h_JM',
                 'ext': 'm4a',
                 'title': 'Taylor Swift - Shake It Off',

-                'description': 'md5:2acfda1b285bdd478ccec22f9918199d',
+                'alt_title': 'Shake It Off',
+                'description': 'md5:95f66187cd7c8b2c13eb78e1223b63c3',

                 'uploader': 'TaylorSwiftVEVO',
                 'uploader_id': 'TaylorSwiftVEVO',
                 'upload_date': '20140818',
                 'uploader': 'TaylorSwiftVEVO',
                 'uploader_id': 'TaylorSwiftVEVO',
                 'upload_date': '20140818',

+                'license': 'Standard YouTube License',
+                'creator': 'Taylor Swift',

             },
             'params': {
                 'youtube_include_dash_manifest': True,
             },
             'params': {
                 'youtube_include_dash_manifest': True,

-                'format': '141',
+                'format': '141/bestaudio[ext=m4a]',

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


@@ -430,13 +531,15 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'upload_date': '20100909',
                 'uploader': 'The Amazing Atheist',
                 'uploader_id': 'TheAmazingAtheist',
                 'upload_date': '20100909',
                 'uploader': 'The Amazing Atheist',
                 'uploader_id': 'TheAmazingAtheist',

+                'uploader_url': 're:https?://(?:www\.)?youtube\.com/user/TheAmazingAtheist',
+                'license': 'Standard YouTube License',

                 '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',
             'info_dict': {
                 'id': 'HtVdAasjOgU',
                 'ext': 'mp4',


@@ -444,12 +547,15 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'description': 're:(?s).{100,}About the Game\n.*?The Witcher 3: Wild Hunt.{100,}',
                 'uploader': 'The Witcher',
                 'uploader_id': 'WitcherGame',
                 'description': 're:(?s).{100,}About the Game\n.*?The Witcher 3: Wild Hunt.{100,}',
                 'uploader': 'The Witcher',
                 'uploader_id': 'WitcherGame',

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

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

+                'license': 'Standard YouTube License',
+                'age_limit': 18,

             },
         },
         # Age-gate video with encrypted signature
         {
             },
         },
         # Age-gate video with encrypted signature
         {

-            'url': 'http://www.youtube.com/watch?v=6kLq3WMV1nU',
+            'url': 'https://www.youtube.com/watch?v=6kLq3WMV1nU',

             'info_dict': {
                 'id': '6kLq3WMV1nU',
                 'ext': 'mp4',
             'info_dict': {
                 'id': '6kLq3WMV1nU',
                 'ext': 'mp4',


@@ -457,7 +563,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'description': 'md5:33765bb339e1b47e7e72b5490139bb41',
                 'uploader': 'LloydVEVO',
                 'uploader_id': 'LloydVEVO',
                 'description': 'md5:33765bb339e1b47e7e72b5490139bb41',
                 'uploader': 'LloydVEVO',
                 'uploader_id': 'LloydVEVO',

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

                 'upload_date': '20110629',
                 'upload_date': '20110629',

+                'license': 'Standard YouTube License',
+                'age_limit': 18,

             },
         },
         # video_info is None (https://github.com/rg3/youtube-dl/issues/4421)
             },
         },
         # video_info is None (https://github.com/rg3/youtube-dl/issues/4421)


@@ -468,9 +577,13 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'ext': 'mp4',
                 'upload_date': '20100430',
                 'uploader_id': 'deadmau5',
                 'ext': 'mp4',
                 'upload_date': '20100430',
                 'uploader_id': 'deadmau5',

+                'uploader_url': 're:https?://(?:www\.)?youtube\.com/user/deadmau5',
+                'creator': 'deadmau5',

                 'description': 'md5:12c56784b8032162bb936a5f76d55360',
                 'uploader': 'deadmau5',
                 'description': 'md5:12c56784b8032162bb936a5f76d55360',
                 'uploader': 'deadmau5',

+                'license': 'Standard YouTube License',

                 'title': 'Deadmau5 - Some Chords (HD)',
                 'title': 'Deadmau5 - Some Chords (HD)',

+                'alt_title': 'Some Chords',

             },
             'expected_warnings': [
                 'DASH manifest missing',
             },
             'expected_warnings': [
                 'DASH manifest missing',


@@ -482,10 +595,12 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             'info_dict': {
                 'id': 'lqQg6PlCWgI',
                 'ext': 'mp4',
             'info_dict': {
                 'id': 'lqQg6PlCWgI',
                 'ext': 'mp4',

-                'upload_date': '20120731',
+                'upload_date': '20150827',

                 'uploader_id': 'olympic',
                 'uploader_id': 'olympic',

+                'uploader_url': 're:https?://(?:www\.)?youtube\.com/user/olympic',
+                'license': 'Standard YouTube License',

                 'description': 'HO09  - Women -  GER-AUS - Hockey - 31 July 2012 - London 2012 Olympic Games',
                 'description': 'HO09  - Women -  GER-AUS - Hockey - 31 July 2012 - London 2012 Olympic Games',

-                'uploader': 'Olympics',
+                'uploader': 'Olympic',

                 'title': 'Hockey - Women -  GER-AUS - London 2012 Olympic Games',
             },
             'params': {
                 'title': 'Hockey - Women -  GER-AUS - London 2012 Olympic Games',
             },
             'params': {


@@ -501,8 +616,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'stretched_ratio': 16 / 9.,
                 'upload_date': '20110310',
                 'uploader_id': 'AllenMeow',
                 'stretched_ratio': 16 / 9.,
                 'upload_date': '20110310',
                 'uploader_id': 'AllenMeow',

+                'uploader_url': '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': '孫艾倫',
                 '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': '孫艾倫',

+                'license': 'Standard YouTube License',

                 'title': '[A-made] 變態妍字幕版 太妍 我就是這樣的人',
             },
         },
                 'title': '[A-made] 變態妍字幕版 太妍 我就是這樣的人',
             },
         },


@@ -511,7 +628,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             'url': 'qEJwOuvDf7I',
             'info_dict': {
                 'id': 'qEJwOuvDf7I',
             'url': 'qEJwOuvDf7I',
             'info_dict': {
                 'id': 'qEJwOuvDf7I',

-                'ext': 'mp4',
+                'ext': 'webm',

                 'title': 'Обсуждение судебной практики по выборам 14 сентября 2014 года в Санкт-Петербурге',
                 'description': '',
                 'upload_date': '20150404',
                 'title': 'Обсуждение судебной практики по выборам 14 сентября 2014 года в Санкт-Петербурге',
                 'description': '',
                 'upload_date': '20150404',


@@ -520,7 +637,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             },
             'params': {
                 'skip_download': 'requires avconv',
             },
             'params': {
                 'skip_download': 'requires avconv',

-            }
+            },
+            'skip': 'This live event has ended.',

         },
         # Extraction from multiple DASH manifests (https://github.com/rg3/youtube-dl/pull/6097)
         {
         },
         # Extraction from multiple DASH manifests (https://github.com/rg3/youtube-dl/pull/6097)
         {


@@ -532,8 +650,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'description': 'md5:116377fd2963b81ec4ce64b542173306',
                 'upload_date': '20150625',
                 'uploader_id': 'dorappi2000',
                 'description': 'md5:116377fd2963b81ec4ce64b542173306',
                 'upload_date': '20150625',
                 'uploader_id': 'dorappi2000',

+                'uploader_url': 're:https?://(?:www\.)?youtube\.com/user/dorappi2000',

                 'uploader': 'dorappi2000',
                 'uploader': 'dorappi2000',

-                'formats': 'mincount:33',
+                'license': 'Standard YouTube License',
+                'formats': 'mincount:32',

             },
         },
         # DASH manifest with segment_list
             },
         },
         # DASH manifest with segment_list


@@ -547,13 +667,202 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'uploader': 'Airtek',
                 'description': 'Retransmisión en directo de la XVIII media maratón de Zaragoza.',
                 'uploader_id': 'UCzTzUmjXxxacNnL8I3m4LnQ',
                 'uploader': 'Airtek',
                 'description': 'Retransmisión en directo de la XVIII media maratón de Zaragoza.',
                 'uploader_id': 'UCzTzUmjXxxacNnL8I3m4LnQ',

+                'license': 'Standard YouTube License',

                 'title': 'Retransmisión XVIII Media maratón Zaragoza 2015',
             },
             'params': {
                 'youtube_include_dash_manifest': True,
                 'format': '135',  # bestvideo
                 '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',
+                    'upload_date': '20150721',
+                    'uploader': 'Beer Games Beer',
+                    'uploader_id': 'beergamesbeer',
+                    'uploader_url': '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',
+                    'upload_date': '20150721',
+                    'uploader': 'Beer Games Beer',
+                    'uploader_id': 'beergamesbeer',
+                    'uploader_url': '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',
+                    'upload_date': '20150721',
+                    'uploader': 'Beer Games Beer',
+                    'uploader_id': 'beergamesbeer',
+                    'uploader_url': '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',
+                    'upload_date': '20150721',
+                    'uploader': 'Beer Games Beer',
+                    'uploader_id': 'beergamesbeer',
+                    'uploader_url': 're:https?://(?:www\.)?youtube\.com/user/beergamesbeer',
+                    'license': 'Standard YouTube License',
+                },
+            }],
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            # Multifeed video with comma in title (see https://github.com/rg3/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/rg3/youtube-dl/issues/7468)
+            # Also tests cut-off URL expansion in video description (see
+            # https://github.com/rg3/youtube-dl/issues/1892,
+            # https://github.com/rg3/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',
+                'description': 'md5:8085699c11dc3f597ce0410b0dcbb34a',
+                'upload_date': '20151119',
+                'uploader_id': 'IronSoulElf',
+                'uploader_url': 're:https?://(?:www\.)?youtube\.com/user/IronSoulElf',
+                'uploader': 'IronSoulElf',
+                'license': 'Standard YouTube License',
+                'creator': 'Todd Haberman, Daniel Law Heath & Aaron Kaplan',
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            # Tags with '};' (see https://github.com/rg3/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',
+                'upload_date': '20150127',
+                'uploader_id': 'BerkmanCenter',
+                'uploader_url': 're:https?://(?:www\.)?youtube\.com/user/BerkmanCenter',
+                'uploader': 'BerkmanCenter',
+                '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',
+                'upload_date': '20151119',
+                'uploader': 'Bernie 2016',
+                'uploader_id': 'UCH1dpzjCEiGAt8CXkryhkZg',
+                'uploader_url': '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/rg3/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': 're:https?://(?:www\.)?youtube\.com/user/FlixMatrixKaravan',
+                'license': 'Standard YouTube License',
+            },
+            'params': {
+                'skip_download': True,
+            },
+        }

     ]
 
     def __init__(self, *args, **kwargs):
     ]
 
     def __init__(self, *args, **kwargs):


@@ -582,7 +891,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
     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]+)$',
+            r'.*?-(?P<id>[a-zA-Z0-9_-]+)(?:/watch_as3|/html5player(?:-new)?|/base)?\.(?P<ext>[a-z]+)$',

             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)


@@ -711,7 +1020,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 '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 {}
 
         sub_lang_list = {}
             return {}
 
         sub_lang_list = {}


@@ -720,8 +1029,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             if lang in sub_lang_list:
                 continue
             sub_formats = []
             if lang in sub_lang_list:
                 continue
             sub_formats = []

-            for ext in ['sbv', 'vtt', 'srt']:
-                params = compat_urllib_parse.urlencode({
+            for ext in self._SUBTITLE_FORMATS:
+                params = compat_urllib_parse_urlencode({

                     'lang': lang,
                     'v': video_id,
                     'fmt': ext,
                     'lang': lang,
                     'v': video_id,
                     'fmt': ext,


@@ -737,49 +1046,96 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             return {}
         return sub_lang_list
 
             return {}
         return sub_lang_list
 

+    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/rg3/youtube-dl/issues/7468,
+            # https://github.com/rg3/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."""
         self.to_screen('%s: Looking for automatic captions' % video_id)
     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."""
         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:
-                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', '')
+            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,
+                })
+                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
+
+            # Some videos don't provide ttsurl but rather caption_tracks and
+            # caption_translation_languages (e.g. 20LmZk1hakA)
+            caption_tracks = args['caption_tracks']
+            caption_translation_languages = args['caption_translation_languages']
+            caption_url = compat_parse_qs(caption_tracks.split(',')[0])['u'][0]
+            parsed_caption_url = compat_urllib_parse_urlparse(caption_url)
+            caption_qs = compat_parse_qs(parsed_caption_url.query)

 
             sub_lang_list = {}
 
             sub_lang_list = {}

-            for lang_node in caption_list.findall('target'):
-                sub_lang = lang_node.attrib['lang_code']
+            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 not sub_lang:
+                    continue

                 sub_formats = []
                 sub_formats = []

-                for ext in ['sbv', 'vtt', 'srt']:
-                    params = compat_urllib_parse.urlencode({
-                        'lang': original_lang,
-                        'tlang': sub_lang,
-                        'fmt': ext,
-                        'ts': timestamp,
-                        'kind': caption_kind,
+                for ext in self._SUBTITLE_FORMATS:
+                    caption_qs.update({
+                        'tlang': [sub_lang],
+                        'fmt': [ext],

                     })
                     })

+                    sub_url = compat_urlparse.urlunparse(parsed_caption_url._replace(
+                        query=compat_urllib_parse_urlencode(caption_qs, True)))

                     sub_formats.append({
                     sub_formats.append({

-                        'url': caption_url + '&' + params,
+                        'url': sub_url,

                         'ext': ext,
                     })
                 sub_lang_list[sub_lang] = sub_formats
                         'ext': ext,
                     })
                 sub_lang_list[sub_lang] = sub_formats


@@ -790,6 +1146,29 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             self._downloader.report_warning(err_msg)
             return {}
 
             self._downloader.report_warning(err_msg)
             return {}
 

+    def _mark_watched(self, video_id, video_info):
+        playback_url = video_info.get('videostats_playback_base_url', [None])[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)
+

     @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)


@@ -817,78 +1196,25 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         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.')
 
         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 _parse_dash_manifest(
-            self, video_id, dash_manifest_url, player_url, age_gate, fatal=True):
-        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/([a-fA-F0-9\.]+)', 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',
-            fatal=fatal)
-
-        if dash_doc is False:
-            return []
-
-        formats = []
-        for a in dash_doc.findall('.//{urn:mpeg:DASH:schema:MPD:2011}AdaptationSet'):
-            mime_type = a.attrib.get('mimeType')
-            for r in a.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
-                if mime_type == 'text/vtt':
-                    # TODO implement WebVTT downloading
-                    pass
-                elif mime_type.startswith('audio/') or mime_type.startswith('video/'):
-                    segment_list = r.find('{urn:mpeg:DASH:schema:MPD:2011}SegmentList')
-                    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')),
-                        'height': int_or_none(r.attrib.get('height')),
-                        'tbr': int_or_none(r.attrib.get('bandwidth'), 1000),
-                        'asr': int_or_none(r.attrib.get('audioSamplingRate')),
-                        'filesize': filesize,
-                        'fps': int_or_none(r.attrib.get('frameRate')),
-                    }
-                    if segment_list is not None:
-                        f.update({
-                            'initialization_url': segment_list.find('{urn:mpeg:DASH:schema:MPD:2011}Initialization').attrib['sourceURL'],
-                            'segment_urls': [segment.attrib.get('media') for segment in segment_list.findall('{urn:mpeg:DASH:schema:MPD:2011}SegmentURL')],
-                            'protocol': 'http_dash_segments',
-                        })
-                    try:
-                        existing_format = next(
-                            fo for fo in formats
-                            if fo['format_id'] == format_id)
-                    except StopIteration:
-                        full_info = self._formats.get(format_id, {}).copy()
-                        full_info.update(f)
-                        codecs = r.attrib.get('codecs')
-                        if codecs:
-                            if full_info.get('acodec') == 'none' and 'vcodec' not in full_info:
-                                full_info['vcodec'] = codecs
-                            elif full_info.get('vcodec') == 'none' and 'acodec' not in full_info:
-                                full_info['acodec'] = codecs
-                        formats.append(full_info)
-                    else:
-                        existing_format.update(f)
-                else:
-                    self.report_warning('Unknown MIME type %s in DASH manifest' % mime_type)
-        return formats
-

     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:


@@ -922,7 +1248,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             # this can be viewed without login into Youtube
             url = proto + '://www.youtube.com/embed/%s' % video_id
             embed_webpage = self._download_webpage(url, video_id, 'Downloading embed webpage')
             # this can be viewed without login into Youtube
             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({
+            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(


@@ -939,15 +1265,19 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             age_gate = False
             video_info = None
             # Try looking directly into the video webpage
             age_gate = False
             video_info = None
             # Try looking directly into the video webpage

-            mobj = re.search(r';ytplayer\.config\s*=\s*({.*?});', video_webpage)
-            if mobj:
-                json_code = uppercase_escape(mobj.group(1))
-                ytplayer_config = json.loads(json_code)
+            ytplayer_config = self._get_ytplayer_config(video_id, video_webpage)
+            if ytplayer_config:

                 args = ytplayer_config['args']
                 if args.get('url_encoded_fmt_stream_map'):
                     # 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)
                 args = ytplayer_config['args']
                 if args.get('url_encoded_fmt_stream_map'):
                     # 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/rg3/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
             if not video_info or self._downloader.params.get('youtube_include_dash_manifest', True):
                 if args.get('livestream') == '1' or args.get('live_playback') == 1:
                     is_live = True
             if not video_info or self._downloader.params.get('youtube_include_dash_manifest', True):


@@ -967,16 +1297,28 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                         video_id, note=False,
                         errnote='unable to download video info webpage')
                     get_video_info = compat_parse_qs(video_info_webpage)
                         video_id, note=False,
                         errnote='unable to download video info webpage')
                     get_video_info = compat_parse_qs(video_info_webpage)

-                    add_dash_mpd(get_video_info)
+                    if get_video_info.get('use_cipher_signature') != ['True']:
+                        add_dash_mpd(get_video_info)

                     if not video_info:
                         video_info = get_video_info
                     if 'token' in get_video_info:
                     if not video_info:
                         video_info = get_video_info
                     if 'token' in get_video_info:

+                        # 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/rg3/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.
+                        if 'token' not in video_info:
+                            video_info = get_video_info

                         break
         if 'token' not in video_info:
             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)
                         break
         if 'token' not in video_info:
             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)

-                    if regions_allowed is not None:
+                    if regions_allowed:

                         raise ExtractorError('YouTube said: This video is available in %s only' % (
                             ', '.join(map(ISO3166Utils.short2full, regions_allowed.split(',')))),
                             expected=True)
                         raise ExtractorError('YouTube said: This video is available in %s only' % (
                             ', '.join(map(ISO3166Utils.short2full, regions_allowed.split(',')))),
                             expected=True)


@@ -988,6 +1330,58 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                     '"token" parameter not in video info for unknown reason',
                     video_id=video_id)
 
                     '"token" parameter not in video info for unknown reason',
                     video_id=video_id)
 

+        # title
+        if 'title' in video_info:
+            video_title = video_info['title'][0]
+        else:
+            self._downloader.report_warning('Unable to extract video title')
+            video_title = '_'
+
+        # description
+        video_description = get_element_by_id("eow-description", video_webpage)
+        if video_description:
+            video_description = re.sub(r'''(?x)
+                <a\s+
+                    (?:[a-zA-Z-]+="[^"]*"\s+)*?
+                    (?:title|href)="([^"]+)"\s+
+                    (?:[a-zA-Z-]+="[^"]*"\s+)*?
+                    class="[^"]*"[^>]*>
+                [^<]+\.{3}\s*
+                </a>
+            ''', r'\1', video_description)
+            video_description = clean_html(video_description)
+        else:
+            fd_mobj = re.search(r'<meta name="description" content="([^"]+)"', video_webpage)
+            if fd_mobj:
+                video_description = unescapeHTML(fd_mobj.group(1))
+            else:
+                video_description = ''
+
+        if 'multifeed_metadata_list' in video_info and not smuggled_data.get('force_singlefeed', False):
+            if not self._downloader.params.get('noplaylist'):
+                entries = []
+                feed_ids = []
+                multifeed_metadata_list = video_info['multifeed_metadata_list'][0]
+                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/rg3/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)
+            self.to_screen('Downloading just video %s because of --no-playlist' % video_id)
+

         if 'view_count' in video_info:
             view_count = int(video_info['view_count'][0])
         else:
         if 'view_count' in video_info:
             view_count = int(video_info['view_count'][0])
         else:


@@ -1007,19 +1401,16 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
         # uploader_id
         video_uploader_id = None
 
         # uploader_id
         video_uploader_id = None

-        mobj = re.search(r'<link itemprop="url" href="http://www.youtube.com/(?:user|channel)/([^"]+)">', video_webpage)
+        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:
         if mobj is not None:

-            video_uploader_id = mobj.group(1)
+            video_uploader_id = mobj.group('uploader_id')
+            video_uploader_url = mobj.group('uploader_url')

         else:
             self._downloader.report_warning('unable to extract uploader nickname')
 
         else:
             self._downloader.report_warning('unable to extract uploader nickname')
 

-        # title
-        if 'title' in video_info:
-            video_title = video_info['title'][0]
-        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="(.*?)">',
         # thumbnail image
         # We try first to get a high quality image:
         m_thumb = re.search(r'<span itemprop="thumbnail".*?href="(.*?)">',


@@ -1044,6 +1435,19 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 upload_date = ' '.join(re.sub(r'[/,-]', r' ', mobj.group(1)).split())
         upload_date = unified_strdate(upload_date)
 
                 upload_date = ' '.join(re.sub(r'[/,-]', r' ', mobj.group(1)).split())
         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'<h4[^>]+class="title"[^>]*>\s*Music\s*</h4>\s*<ul[^>]*>\s*<li>(?P<title>.+?) by (?P<creator>.+?)(?:\(.+?\))?</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
+

         m_cat_container = self._search_regex(
             r'(?s)<h4[^>]*>\s*Category\s*</h4>\s*<ul[^>]*>(.*?)</ul>',
             video_webpage, 'categories', default=None)
         m_cat_container = self._search_regex(
             r'(?s)<h4[^>]*>\s*Category\s*</h4>\s*<ul[^>]*>(.*?)</ul>',
             video_webpage, 'categories', default=None)


@@ -1055,25 +1459,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         else:
             video_categories = None
 
         else:
             video_categories = None
 

-        # description
-        video_description = get_element_by_id("eow-description", video_webpage)
-        if video_description:
-            video_description = re.sub(r'''(?x)
-                <a\s+
-                    (?:[a-zA-Z-]+="[^"]+"\s+)*?
-                    title="([^"]+)"\s+
-                    (?:[a-zA-Z-]+="[^"]+"\s+)*?
-                    class="yt-uix-redirect-link"\s*>
-                [^<]+
-                </a>
-            ''', r'\1', video_description)
-            video_description = clean_html(video_description)
-        else:
-            fd_mobj = re.search(r'<meta name="description" content="([^"]+)"', video_webpage)
-            if fd_mobj:
-                video_description = unescapeHTML(fd_mobj.group(1))
-            else:
-                video_description = ''
+        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(
 
         def _extract_count(count_name):
             return str_to_int(self._search_regex(


@@ -1124,7 +1512,20 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             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)
             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 = {}
+            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]),
+                            }
+            formats = []

             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:
             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:


@@ -1170,7 +1571,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                                 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)-([^/]+)/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


@@ -1184,23 +1585,90 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                     url += '&signature=' + signature
                 if 'ratebypass' not in url:
                     url += '&ratebypass=yes'
                     url += '&signature=' + signature
                 if 'ratebypass' not in url:
                     url += '&ratebypass=yes'

-                url_map[format_id] = url
-            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/rg3/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+)$', url_data.get('size', [''])[0])
+                width, height = (int(mobj.group('width')), int(mobj.group('height'))) if mobj else (None, None)
+
+                more_fields = {
+                    'filesize': int_or_none(url_data.get('clen', [None])[0]),
+                    'tbr': float_or_none(url_data.get('bitrate', [None])[0], 1000),
+                    'width': width,
+                    'height': height,
+                    'fps': int_or_none(url_data.get('fps', [None])[0]),
+                    'format_note': url_data.get('quality_label', [None])[0] or url_data.get('quality', [None])[0],
+                }
+                for key, value in more_fields.items():
+                    if value:
+                        dct[key] = value
+                type_ = url_data.get('type', [None])[0]
+                if type_:
+                    type_split = type_.split(';')
+                    kind_ext = type_split[0].split('/')
+                    if len(kind_ext) == 2:
+                        kind, _ = kind_ext
+                        dct['ext'] = mimetype2ext(type_split[0])
+                        if kind in ('audio', 'video'):
+                            codecs = None
+                            for mobj in re.finditer(
+                                    r'(?P<key>[a-zA-Z_-]+)=(?P<quote>["\']?)(?P<val>.+?)(?P=quote)(?:;|$)', type_):
+                                if mobj.group('key') == 'codecs':
+                                    codecs = mobj.group('val')
+                                    break
+                            if codecs:
+                                codecs = codecs.split(',')
+                                if len(codecs) == 2:
+                                    acodec, vcodec = codecs[1], codecs[0]
+                                else:
+                                    acodec, vcodec = (codecs[0], 'none') if kind == 'audio' else ('none', codecs[0])
+                                dct.update({
+                                    'acodec': acodec,
+                                    'vcodec': vcodec,
+                                })
+                formats.append(dct)

         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)
         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)

+            # Accept-Encoding header causes failures in live streams on Youtube and Youtube Gaming
+            for a_format in formats:
+                a_format.setdefault('http_headers', {})['Youtubedl-no-compression'] = 'True'

         else:
         else:

+            unavailable_message = self._html_search_regex(
+                r'(?s)<h1[^>]+id="unavailable-message"[^>]*>(.+?)</h1>',
+                video_webpage, 'unavailable message', default=None)
+            if unavailable_message:
+                raise ExtractorError(unavailable_message, expected=True)

             raise ExtractorError('no conn, hlsvp or url_encoded_fmt_stream_map information found in video info')
 
         # Look for the DASH manifest
         if self._downloader.params.get('youtube_include_dash_manifest', True):
             dash_mpd_fatal = True
             raise ExtractorError('no conn, hlsvp or url_encoded_fmt_stream_map information found in video info')
 
         # Look for the DASH manifest
         if self._downloader.params.get('youtube_include_dash_manifest', True):
             dash_mpd_fatal = True

-            for dash_manifest_url in dash_mpds:
+            for mpd_url in dash_mpds:

                 dash_formats = {}
                 try:
                 dash_formats = {}
                 try:

-                    for df in self._parse_dash_manifest(
-                            video_id, dash_manifest_url, player_url, age_gate, dash_mpd_fatal):
+                    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):

                         # 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
                         # 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


@@ -1227,22 +1695,34 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             r'<meta\s+property="og:video:tag".*?content="yt:stretch=(?P<w>[0-9]+):(?P<h>[0-9]+)">',
             video_webpage)
         if stretched_m:
             r'<meta\s+property="og:video:tag".*?content="yt:stretch=(?P<w>[0-9]+):(?P<h>[0-9]+)">',
             video_webpage)
         if stretched_m:

-            ratio = float(stretched_m.group('w')) / float(stretched_m.group('h'))
-            for f in formats:
-                if f.get('vcodec') != 'none':
-                    f['stretched_ratio'] = ratio
+            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

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

+        self.mark_watched(video_id, video_info)
+

         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,

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

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

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

+            'alt_title': video_alt_title,

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

+            'tags': video_tags,

             'subtitles': video_subtitles,
             'automatic_captions': automatic_captions,
             'duration': video_duration,
             'subtitles': video_subtitles,
             'automatic_captions': automatic_captions,
             'duration': video_duration,


@@ -1255,19 +1735,57 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             'average_rating': float_or_none(video_info.get('avg_rating', [None])[0]),
             'formats': formats,
             'is_live': is_live,
             'average_rating': float_or_none(video_info.get('avg_rating', [None])[0]),
             'formats': formats,
             'is_live': is_live,

+            'start_time': start_time,
+            'end_time': end_time,

         }
 
 
         }
 
 

-class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
+class YoutubeSharedVideoIE(InfoExtractor):
+    _VALID_URL = r'(?:https?:)?//(?:www\.)?youtube\.com/shared\?.*\bci=(?P<id>[0-9A-Za-z_-]{11})'
+    IE_NAME = 'youtube:shared'
+
+    _TEST = {
+        'url': 'https://www.youtube.com/shared?ci=1nEzmT-M4fU',
+        'info_dict': {
+            'id': 'uPDB5I9wfp8',
+            'ext': 'webm',
+            'title': 'Pocoyo: 90 minutos de episódios completos Português para crianças - PARTE 3',
+            'description': 'md5:d9e4d9346a2dfff4c7dc4c8cec0f546d',
+            'upload_date': '20160219',
+            'uploader': 'Pocoyo - Português (BR)',
+            'uploader_id': 'PocoyoBrazil',
+        },
+        'add_ie': ['Youtube'],
+        'params': {
+            # There are already too many Youtube downloads
+            'skip_download': True,
+        },
+    }
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+
+        webpage = self._download_webpage(url, video_id)
+
+        real_video_id = self._html_search_meta(
+            'videoId', webpage, 'YouTube video id', fatal=True)
+
+        return self.url_result(real_video_id, YoutubeIE.ie_key())
+
+
+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/
+                            (?:
+                               (?:course|view_play_list|my_playlists|artist|playlist|watch|embed/videoseries)
+                               \? (?:.*?[&;])*? (?:p|a|list)=
+                            |  p/
+                            )|
+                            youtu\.be/[0-9A-Za-z_-]{11}\?.*?\blist=

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


@@ -1278,8 +1796,8 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
                      |
                         ((?:PL|LL|EC|UU|FL|RD|UL)[0-9A-Za-z-_]{10,})
                      )"""
                      |
                         ((?:PL|LL|EC|UU|FL|RD|UL)[0-9A-Za-z-_]{10,})
                      )"""

-    _TEMPLATE_URL = 'https://www.youtube.com/playlist?list=%s'
-    _VIDEO_RE = r'href="\s*/watch\?v=(?P<id>[0-9A-Za-z_-]{11})&amp;[^"]*?index=(?P<index>\d+)'
+    _TEMPLATE_URL = 'https://www.youtube.com/playlist?list=%s&disable_polymer=true'
+    _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',


@@ -1328,7 +1846,7 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
         'playlist_count': 2,
     }, {
         'note': 'embedded',
         'playlist_count': 2,
     }, {
         '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',


@@ -1336,7 +1854,7 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
         }
     }, {
         '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',


@@ -1349,7 +1867,53 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
             'title': 'Uploads from Interstellar Movie',
             'id': 'UUXw-G3eDE9trcvY2sBMM_aA',
         },
             'title': 'Uploads from Interstellar Movie',
             'id': 'UUXw-G3eDE9trcvY2sBMM_aA',
         },

-        'playlist_mincout': 21,
+        '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': 're:https?://(?:www\.)?youtube\.com/channel/UCyPhqAZgwYWZfxElWVbVJng',
+            'upload_date': '20150526',
+            'license': 'Standard YouTube License',
+            'description': 'md5:507cdcb5a49ac0da37a920ece610be80',
+            'categories': ['People & Blogs'],
+            'tags': list,
+            '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': '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,

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


@@ -1358,20 +1922,32 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
     def _extract_mix(self, playlist_id):
         # The mixes are generated from a single video
         # the id of the playlist is just 'RD' + video_id
     def _extract_mix(self, playlist_id):
         # The mixes are generated from a single video
         # 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('playlist-title') or
             search_title('title long-title') or
             search_title('title'))
         title = clean_html(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'))
         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)
 


@@ -1396,96 +1972,101 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
             else:
                 self.report_warning('Youtube gives an alert message: ' + match)
 
             else:
                 self.report_warning('Youtube gives an alert message: ' + match)
 

-        # Extract the video ids from the playlist pages
-        def _entries():
-            more_widget_html = content_html = page
-            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')
-                for vid_id in new_ids:
-                    yield self.url_result(vid_id, 'Youtube', video_id=vid_id)
-
-                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']
-                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']
-

         playlist_title = self._html_search_regex(
         playlist_title = self._html_search_regex(

-            r'(?s)<h1 class="pl-header-title[^"]*">\s*(.*?)\s*</h1>',
-            page, 'title')
+            r'(?s)<h1 class="pl-header-title[^"]*"[^>]*>\s*(.*?)\s*</h1>',
+            page, 'title', default=None)

 
 

-        return self.playlist_result(_entries(), playlist_id, playlist_title)
+        has_videos = True

 
 

-    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)
+        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
+
+        return has_videos, self.playlist_result(
+            self._entries(page, playlist_id), playlist_id, playlist_title)

 
 

+    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/([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
+
+    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

 
 

-        if playlist_id.startswith('RD') or playlist_id.startswith('UL'):
+        if playlist_id.startswith(('RD', 'UL', 'PU')):

             # Mixes require a custom extraction process
             return self._extract_mix(playlist_id)
 
             # Mixes require a custom extraction process
             return self._extract_mix(playlist_id)
 

-        return self._extract_playlist(playlist_id)
+        has_videos, playlist = self._extract_playlist(playlist_id)
+        if has_videos or not video_id:
+            return playlist

 
 

+        # Some playlist URLs don't actually serve a playlist (see
+        # https://github.com/rg3/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'
     _VALID_URL = r'https?://(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com)/channel/(?P<id>[0-9A-Za-z_-]+)'
     _TEMPLATE_URL = 'https://www.youtube.com/channel/%s/videos'
     IE_DESC = 'YouTube.com channels'
     _VALID_URL = r'https?://(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com)/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,
         'info_dict': {
     IE_NAME = 'youtube:channel'
     _TESTS = [{
         'note': 'paginated channel',
         'url': 'https://www.youtube.com/channel/UCKfVa3S1e4PHvxWcwyMMg8w',
         'playlist_mincount': 91,
         'info_dict': {

-            'id': 'UCKfVa3S1e4PHvxWcwyMMg8w',
+            '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',
+        },

     }]
 
     }]
 

-    @staticmethod
-    def extract_videos_from_page(page):
-        ids_in_page = []
-        titles_in_page = []
-        for mobj in re.finditer(r'(?:title="(?P<title>[^"]+)"[^>]+)?href="/watch\?v=(?P<id>[0-9A-Za-z_-]+)&?', page):
-            video_id = mobj.group('id')
-            video_title = unescapeHTML(mobj.group('title'))
-            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)
+    @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):
         channel_id = self._match_id(url)
 
 
     def _real_extract(self, url):
         channel_id = self._match_id(url)
 

-        url = self._TEMPLATE_URL % channel_id
+        url = self._build_template_url(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
 
         # 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


@@ -1493,12 +2074,19 @@ class YoutubeChannelIE(InfoExtractor):
         channel_page = self._download_webpage(
             url + '?view=57', channel_id,
             'Downloading channel page', fatal=False)
         channel_page = self._download_webpage(
             url + '?view=57', channel_id,
             'Downloading channel page', fatal=False)

-        channel_playlist_id = self._html_search_meta(
-            'channelId', channel_page, 'channel id', default=None)
-        if not channel_playlist_id:
-            channel_playlist_id = self._search_regex(
-                r'data-channel-external-id="([^"]+)"',
-                channel_page, 'channel id', default=None)
+        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(
         if channel_playlist_id and channel_playlist_id.startswith('UC'):
             playlist_id = 'UU' + channel_playlist_id[2:]
             return self.url_result(


@@ -1521,58 +2109,150 @@ class YoutubeChannelIE(InfoExtractor):
                 for video_id, video_title in self.extract_videos_from_page(channel_page)]
             return self.playlist_result(entries, channel_id)
 
                 for video_id, video_title in self.extract_videos_from_page(channel_page)]
             return self.playlist_result(entries, channel_id)
 

-        def _entries():
-            more_widget_html = content_html = channel_page
-            for pagenum in itertools.count(1):
-
-                for video_id, video_title in self.extract_videos_from_page(content_html):
-                    yield self.url_result(
-                        video_id, 'Youtube', video_id=video_id,
-                        video_title=video_title)
-
-                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'), channel_id,
-                    'Downloading page #%s' % (pagenum + 1),
-                    transform_source=uppercase_escape)
-                content_html = more['content_html']
-                more_widget_html = more['load_more_widget_html']
+        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)

 
 

-        return self.playlist_result(_entries(), channel_id)
+        return self.playlist_result(self._entries(channel_page, channel_id), channel_id)

 
 
 class YoutubeUserIE(YoutubeChannelIE):
     IE_DESC = 'YouTube.com user videos (URL or "ytuser" keyword)'
 
 
 class YoutubeUserIE(YoutubeChannelIE):
     IE_DESC = 'YouTube.com user videos (URL or "ytuser" keyword)'

-    _VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?youtube\.com/(?:user/)?(?!(?:attribution_link|watch|results)(?:$|[^a-z_A-Z0-9-])))|ytuser:)(?!feed/)(?P<id>[A-Za-z0-9_-]+)'
-    _TEMPLATE_URL = 'https://www.youtube.com/user/%s/videos'
+    _VALID_URL = r'(?:(?:https?://(?:\w+\.)?youtube\.com/(?:(?P<user>user|c)/)?(?!(?:attribution_link|watch|results)(?:$|[^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.
+        '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 _build_template_url(self, url, channel_id):
+        mobj = re.match(self._VALID_URL, url)
+        return self._TEMPLATE_URL % (mobj.group('user') or 'user', mobj.group('id'))
+
+
+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'
+
+    _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': '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,
+    }]
+
+    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=None)
+            video_id = self._html_search_meta(
+                'videoId', webpage, 'video id', default=None)
+            if page_type == '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'
+
+    _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',
+        },
+    }]
+

 
 class YoutubeSearchIE(SearchInfoExtractor, YoutubePlaylistIE):
     IE_DESC = 'YouTube.com searches'
 
 class YoutubeSearchIE(SearchInfoExtractor, YoutubePlaylistIE):
     IE_DESC = 'YouTube.com searches'


@@ -1597,7 +2277,7 @@ class YoutubeSearchIE(SearchInfoExtractor, YoutubePlaylistIE):
                 'spf': 'navigate',
             }
             url_query.update(self._EXTRA_QUERY_ARGS)
                 'spf': 'navigate',
             }
             url_query.update(self._EXTRA_QUERY_ARGS)

-            result_url = 'https://www.youtube.com/results?' + compat_urllib_parse.urlencode(url_query)
+            result_url = 'https://www.youtube.com/results?' + compat_urllib_parse_urlencode(url_query)

             data = self._download_json(
                 result_url, video_id='query "%s"' % query,
                 note='Downloading page %s' % pagenum,
             data = self._download_json(
                 result_url, video_id='query "%s"' % query,
                 note='Downloading page %s' % pagenum,


@@ -1626,56 +2306,36 @@ class YoutubeSearchDateIE(YoutubeSearchIE):
     _EXTRA_QUERY_ARGS = {'search_sort': 'video_date_uploaded'}
 
 
     _EXTRA_QUERY_ARGS = {'search_sort': 'video_date_uploaded'}
 
 

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

     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>[^&]+)(?:[&]|$)'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/results\?(.*?&)?(?:search_query|q)=(?P<query>[^&]+)(?:[&]|$)'
+    _VIDEO_RE = r'href="\s*/watch\?v=(?P<id>[0-9A-Za-z_-]{11})(?:[^"]*"[^>]+\btitle="(?P<title>[^"]+))?'

     _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)
         query = compat_urllib_parse_unquote_plus(mobj.group('query'))
     }]
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
         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',


@@ -1683,26 +2343,9 @@ 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):


@@ -1757,18 +2400,28 @@ class YoutubeFeedsInfoExtractor(YoutubeBaseInfoExtractor):
 class YoutubeWatchLaterIE(YoutubePlaylistIE):
     IE_NAME = 'youtube:watchlater'
     IE_DESC = 'Youtube watch later list, ":ytwatchlater" for short (requires authentication)'
 class YoutubeWatchLaterIE(YoutubePlaylistIE):
     IE_NAME = 'youtube:watchlater'
     IE_DESC = 'Youtube watch later list, ":ytwatchlater" for short (requires authentication)'

-    _VALID_URL = r'https?://www\.youtube\.com/(?:feed/watch_later|playlist\?list=WL)|:ytwatchlater'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/(?:feed/watch_later|(?:playlist|watch)\?(?:.+&)?list=WL)|:ytwatchlater'

 
 

-    _TESTS = []  # override PlaylistIE tests
+    _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,
+    }]

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

-        return self._extract_playlist('WL')
+        _, 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):


@@ -1779,21 +2432,21 @@ class YoutubeFavouritesIE(YoutubeBaseInfoExtractor):
 
 class YoutubeRecommendedIE(YoutubeFeedsInfoExtractor):
     IE_DESC = 'YouTube.com recommended videos, ":ytrec" for short (requires authentication)'
 
 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)?'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/recommended|:ytrec(?:ommended)?'

     _FEED_NAME = 'recommended'
     _PLAYLIST_TITLE = 'Youtube Recommended videos'
 
 
 class YoutubeSubscriptionsIE(YoutubeFeedsInfoExtractor):
     IE_DESC = 'YouTube.com subscriptions feed, "ytsubs" keyword (requires authentication)'
     _FEED_NAME = 'recommended'
     _PLAYLIST_TITLE = 'Youtube Recommended videos'
 
 
 class YoutubeSubscriptionsIE(YoutubeFeedsInfoExtractor):
     IE_DESC = 'YouTube.com subscriptions feed, "ytsubs" keyword (requires authentication)'

-    _VALID_URL = r'https?://www\.youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'

     _FEED_NAME = 'subscriptions'
     _PLAYLIST_TITLE = 'Youtube Subscriptions'
 
 
 class YoutubeHistoryIE(YoutubeFeedsInfoExtractor):
     IE_DESC = 'Youtube watch history, ":ythistory" for short (requires authentication)'
     _FEED_NAME = 'subscriptions'
     _PLAYLIST_TITLE = 'Youtube Subscriptions'
 
 
 class YoutubeHistoryIE(YoutubeFeedsInfoExtractor):
     IE_DESC = 'Youtube watch history, ":ythistory" for short (requires authentication)'

-    _VALID_URL = 'https?://www\.youtube\.com/feed/history|:ythistory'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/history|:ythistory'

     _FEED_NAME = 'history'
     _PLAYLIST_TITLE = 'Youtube History'
 
     _FEED_NAME = 'history'
     _PLAYLIST_TITLE = 'Youtube History'
 


@@ -1809,6 +2462,7 @@ class YoutubeTruncatedURLIE(InfoExtractor):
             annotation_id=annotation_[^&]+|
             x-yt-cl=[0-9]+|
             hl=[^&]*|
             annotation_id=annotation_[^&]+|
             x-yt-cl=[0-9]+|
             hl=[^&]*|

+            t=[0-9]+

         )?
         |
             attribution_link\?a=[^&]+
         )?
         |
             attribution_link\?a=[^&]+


@@ -1817,10 +2471,10 @@ class YoutubeTruncatedURLIE(InfoExtractor):
     '''
 
     _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,
     }, {
         'only_matching': True,
     }, {

-        'url': 'http://www.youtube.com/watch?',
+        '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?x-yt-cl=84503534',


@@ -1831,6 +2485,9 @@ class YoutubeTruncatedURLIE(InfoExtractor):
     }, {
         'url': 'https://www.youtube.com/watch?hl=en-GB',
         'only_matching': True,
     }, {
         'url': 'https://www.youtube.com/watch?hl=en-GB',
         'only_matching': True,

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

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


@@ -1838,7 +2495,7 @@ 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)