diff --git a/.github/ISSUE_TEMPLATE/1_broken_site.md b/.github/ISSUE_TEMPLATE/1_broken_site.md
index 6ece3e031..4eb505231 100644
--- a/.github/ISSUE_TEMPLATE/1_broken_site.md
+++ b/.github/ISSUE_TEMPLATE/1_broken_site.md
@@ -18,7 +18,7 @@ title: ''
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.04.26. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.06.06. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
 - Make sure that all URLs and arguments with special characters are properly quoted or escaped as explained in http://yt-dl.org/escape.
 - Search the bugtracker for similar issues: http://yt-dl.org/search-issues. DO NOT post duplicates.
@@ -26,7 +26,7 @@ Carefully read and work through this check list in order to prevent the most com
 -->
 
 - [ ] I'm reporting a broken site support
-- [ ] I've verified that I'm running youtube-dl version **2021.04.26**
+- [ ] I've verified that I'm running youtube-dl version **2021.06.06**
 - [ ] I've checked that all provided URLs are alive and playable in a browser
 - [ ] I've checked that all URLs and arguments with special characters are properly quoted or escaped
 - [ ] I've searched the bugtracker for similar issues including closed ones
@@ -41,7 +41,7 @@ Add the `-v` flag to your command line you run youtube-dl with (`youtube-dl -v <
  [debug] User config: []
  [debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
  [debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
- [debug] youtube-dl version 2021.04.26
+ [debug] youtube-dl version 2021.06.06
  [debug] Python version 2.7.11 - Windows-2003Server-5.2.3790-SP2
  [debug] exe versions: ffmpeg N-75573-g1d0487f, ffprobe N-75573-g1d0487f, rtmpdump 2.4
  [debug] Proxy map: {}
diff --git a/.github/ISSUE_TEMPLATE/2_site_support_request.md b/.github/ISSUE_TEMPLATE/2_site_support_request.md
index f923b2d5f..9fed0b489 100644
--- a/.github/ISSUE_TEMPLATE/2_site_support_request.md
+++ b/.github/ISSUE_TEMPLATE/2_site_support_request.md
@@ -19,7 +19,7 @@ labels: 'site-support-request'
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.04.26. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.06.06. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
 - Make sure that site you are requesting is not dedicated to copyright infringement, see https://yt-dl.org/copyright-infringement. youtube-dl does not support such sites. In order for site support request to be accepted all provided example URLs should not violate any copyrights.
 - Search the bugtracker for similar site support requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
@@ -27,7 +27,7 @@ Carefully read and work through this check list in order to prevent the most com
 -->
 
 - [ ] I'm reporting a new site support request
-- [ ] I've verified that I'm running youtube-dl version **2021.04.26**
+- [ ] I've verified that I'm running youtube-dl version **2021.06.06**
 - [ ] I've checked that all provided URLs are alive and playable in a browser
 - [ ] I've checked that none of provided URLs violate any copyrights
 - [ ] I've searched the bugtracker for similar site support requests including closed ones
diff --git a/.github/ISSUE_TEMPLATE/3_site_feature_request.md b/.github/ISSUE_TEMPLATE/3_site_feature_request.md
index 97d605653..573e8ded0 100644
--- a/.github/ISSUE_TEMPLATE/3_site_feature_request.md
+++ b/.github/ISSUE_TEMPLATE/3_site_feature_request.md
@@ -18,13 +18,13 @@ title: ''
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.04.26. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.06.06. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Search the bugtracker for similar site feature requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
 - Finally, put x into all relevant boxes (like this [x])
 -->
 
 - [ ] I'm reporting a site feature request
-- [ ] I've verified that I'm running youtube-dl version **2021.04.26**
+- [ ] I've verified that I'm running youtube-dl version **2021.06.06**
 - [ ] I've searched the bugtracker for similar site feature requests including closed ones
 
 
diff --git a/.github/ISSUE_TEMPLATE/4_bug_report.md b/.github/ISSUE_TEMPLATE/4_bug_report.md
index 73a806833..c0031bf7a 100644
--- a/.github/ISSUE_TEMPLATE/4_bug_report.md
+++ b/.github/ISSUE_TEMPLATE/4_bug_report.md
@@ -18,7 +18,7 @@ title: ''
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.04.26. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.06.06. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
 - Make sure that all URLs and arguments with special characters are properly quoted or escaped as explained in http://yt-dl.org/escape.
 - Search the bugtracker for similar issues: http://yt-dl.org/search-issues. DO NOT post duplicates.
@@ -27,7 +27,7 @@ Carefully read and work through this check list in order to prevent the most com
 -->
 
 - [ ] I'm reporting a broken site support issue
-- [ ] I've verified that I'm running youtube-dl version **2021.04.26**
+- [ ] I've verified that I'm running youtube-dl version **2021.06.06**
 - [ ] I've checked that all provided URLs are alive and playable in a browser
 - [ ] I've checked that all URLs and arguments with special characters are properly quoted or escaped
 - [ ] I've searched the bugtracker for similar bug reports including closed ones
@@ -43,7 +43,7 @@ Add the `-v` flag to your command line you run youtube-dl with (`youtube-dl -v <
  [debug] User config: []
  [debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
  [debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
- [debug] youtube-dl version 2021.04.26
+ [debug] youtube-dl version 2021.06.06
  [debug] Python version 2.7.11 - Windows-2003Server-5.2.3790-SP2
  [debug] exe versions: ffmpeg N-75573-g1d0487f, ffprobe N-75573-g1d0487f, rtmpdump 2.4
  [debug] Proxy map: {}
diff --git a/.github/ISSUE_TEMPLATE/5_feature_request.md b/.github/ISSUE_TEMPLATE/5_feature_request.md
index ee19a75f5..1138ab2ca 100644
--- a/.github/ISSUE_TEMPLATE/5_feature_request.md
+++ b/.github/ISSUE_TEMPLATE/5_feature_request.md
@@ -19,13 +19,13 @@ labels: 'request'
 
 <!--
 Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
-- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.04.26. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
+- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.06.06. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
 - Search the bugtracker for similar feature requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
 - Finally, put x into all relevant boxes (like this [x])
 -->
 
 - [ ] I'm reporting a feature request
-- [ ] I've verified that I'm running youtube-dl version **2021.04.26**
+- [ ] I've verified that I'm running youtube-dl version **2021.06.06**
 - [ ] I've searched the bugtracker for similar feature requests including closed ones
 
 
diff --git a/ChangeLog b/ChangeLog
index f15c84225..680fffdf8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,52 @@
+version 2021.06.06
+
+Extractors
+* [facebook] Improve login required detection
+* [youporn] Fix formats and view count extraction (#29216)
+* [orf:tvthek] Fix thumbnails extraction (#29217)
+* [formula1] Fix extraction (#29206)
+* [ard] Relax URL regular expression and fix video ids (#22724, #29091)
++ [ustream] Detect https embeds (#29133)
+* [ted] Prefer own formats over external sources (#29142)
+* [twitch:clips] Improve extraction (#29149)
++ [twitch:clips] Add access token query to download URLs (#29136)
+* [youtube] Fix get_video_info request (#29086, #29165)
+* [vimeo] Fix vimeo pro embed extraction (#29126)
+* [redbulltv] Fix embed data extraction (#28770)
+* [shahid] Relax URL regular expression (#28772, #28930)
+
+
+version 2021.05.16
+
+Core
+* [options] Fix thumbnail option group name (#29042)
+* [YoutubeDL] Improve extract_info doc (#28946)
+
+Extractors
++ [playstuff] Add support for play.stuff.co.nz (#28901, #28931)
+* [eroprofile] Fix extraction (#23200, #23626, #29008)
++ [vivo] Add support for vivo.st (#29009)
++ [generic] Add support for og:audio (#28311, #29015)
+* [phoenix] Fix extraction (#29057)
++ [generic] Add support for sibnet embeds
++ [vk] Add support for sibnet embeds (#9500)
++ [generic] Add Referer header for direct videojs download URLs (#2879,
+  #20217, #29053)
+* [orf:radio] Switch download URLs to HTTPS (#29012, #29046)
+- [blinkx] Remove extractor (#28941)
+* [medaltv] Relax URL regular expression (#28884)
++ [funimation] Add support for optional lang code in URLs (#28950)
++ [gdcvault] Add support for HTML5 videos
+* [dispeak] Improve FLV extraction (#13513, #28970)
+* [kaltura] Improve iframe extraction (#28969)
+* [kaltura] Make embed code alternatives actually work
+* [cda] Improve extraction (#28709, #28937)
+* [twitter] Improve formats extraction from vmap URL (#28909)
+* [xtube] Fix formats extraction (#28870)
+* [svtplay] Improve extraction (#28507, #28876)
+* [tv2dk] Fix extraction (#28888)
+
+
 version 2021.04.26
 
 Extractors
diff --git a/README.md b/README.md
index 94c34d89a..2841ed68f 100644
--- a/README.md
+++ b/README.md
@@ -287,7 +287,7 @@ Alternatively, refer to the [developer instructions](#developer-instructions) fo
     --no-cache-dir                       Disable filesystem caching
     --rm-cache-dir                       Delete all filesystem cache files
 
-## Thumbnail images:
+## Thumbnail Options:
     --write-thumbnail                    Write thumbnail image to disk
     --write-all-thumbnails               Write all thumbnail image formats to
                                          disk
@@ -893,7 +893,7 @@ Since June 2012 ([#342](https://github.com/ytdl-org/youtube-dl/issues/342)) yout
 
 ### The exe throws an error due to missing `MSVCR100.dll`
 
-To run the exe you need to install first the [Microsoft Visual C++ 2010 Redistributable Package (x86)](https://www.microsoft.com/en-US/download/details.aspx?id=5555).
+To run the exe you need to install first the [Microsoft Visual C++ 2010 Service Pack 1 Redistributable Package (x86)](https://download.microsoft.com/download/1/6/5/165255E7-1014-4D0A-B094-B6A430A6BFFC/vcredist_x86.exe).
 
 ### On Windows, how should I set up ffmpeg and youtube-dl? Where should I put the exe files?
 
diff --git a/docs/supportedsites.md b/docs/supportedsites.md
index 88d474de4..ed0d5e9d9 100644
--- a/docs/supportedsites.md
+++ b/docs/supportedsites.md
@@ -119,7 +119,6 @@
  - **BitChuteChannel**
  - **BleacherReport**
  - **BleacherReportCMS**
- - **blinkx**
  - **Bloomberg**
  - **BokeCC**
  - **BongaCams**
@@ -713,6 +712,7 @@
  - **play.fm**
  - **player.sky.it**
  - **PlayPlusTV**
+ - **PlayStuff**
  - **PlaysTV**
  - **Playtvak**: Playtvak.cz, iDNES.cz and Lidovky.cz
  - **Playvid**
diff --git a/youtube_dl/extractor/appleconnect.py b/youtube_dl/extractor/appleconnect.py
index a84b8b1eb..494f8330c 100644
--- a/youtube_dl/extractor/appleconnect.py
+++ b/youtube_dl/extractor/appleconnect.py
@@ -9,10 +9,10 @@ from ..utils import (
 
 
 class AppleConnectIE(InfoExtractor):
-    _VALID_URL = r'https?://itunes\.apple\.com/\w{0,2}/?post/idsa\.(?P<id>[\w-]+)'
-    _TEST = {
+    _VALID_URL = r'https?://itunes\.apple\.com/\w{0,2}/?post/(?:id)?sa\.(?P<id>[\w-]+)'
+    _TESTS = [{
         'url': 'https://itunes.apple.com/us/post/idsa.4ab17a39-2720-11e5-96c5-a5b38f6c42d3',
-        'md5': 'e7c38568a01ea45402570e6029206723',
+        'md5': 'c1d41f72c8bcaf222e089434619316e4',
         'info_dict': {
             'id': '4ab17a39-2720-11e5-96c5-a5b38f6c42d3',
             'ext': 'm4v',
@@ -22,7 +22,10 @@ class AppleConnectIE(InfoExtractor):
             'upload_date': '20150710',
             'timestamp': 1436545535,
         },
-    }
+    }, {
+        'url': 'https://itunes.apple.com/us/post/sa.0fe0229f-2457-11e5-9f40-1bb645f2d5d9',
+        'only_matching': True,
+    }]
 
     def _real_extract(self, url):
         video_id = self._match_id(url)
@@ -36,7 +39,7 @@ class AppleConnectIE(InfoExtractor):
 
         video_data = self._parse_json(video_json, video_id)
         timestamp = str_to_int(self._html_search_regex(r'data-timestamp="(\d+)"', webpage, 'timestamp'))
-        like_count = str_to_int(self._html_search_regex(r'(\d+) Loves', webpage, 'like count'))
+        like_count = str_to_int(self._html_search_regex(r'(\d+) Loves', webpage, 'like count', default=None))
 
         return {
             'id': video_id,
diff --git a/youtube_dl/extractor/ard.py b/youtube_dl/extractor/ard.py
index d57c5ba0f..d45a9fe52 100644
--- a/youtube_dl/extractor/ard.py
+++ b/youtube_dl/extractor/ard.py
@@ -249,14 +249,14 @@ class ARDMediathekIE(ARDMediathekBaseIE):
 
 
 class ARDIE(InfoExtractor):
-    _VALID_URL = r'(?P<mainurl>https?://(?:www\.)?daserste\.de/[^?#]+/videos(?:extern)?/(?P<display_id>[^/?#]+)-(?:video-?)?(?P<id>[0-9]+))\.html'
+    _VALID_URL = r'(?P<mainurl>https?://(?:www\.)?daserste\.de/(?:[^/?#&]+/)+(?P<id>[^/?#&]+))\.html'
     _TESTS = [{
         # available till 7.01.2022
         'url': 'https://www.daserste.de/information/talk/maischberger/videos/maischberger-die-woche-video100.html',
         'md5': '867d8aa39eeaf6d76407c5ad1bb0d4c1',
         'info_dict': {
-            'display_id': 'maischberger-die-woche',
-            'id': '100',
+            'id': 'maischberger-die-woche-video100',
+            'display_id': 'maischberger-die-woche-video100',
             'ext': 'mp4',
             'duration': 3687.0,
             'title': 'maischberger. die woche vom 7. Januar 2021',
@@ -264,16 +264,25 @@ class ARDIE(InfoExtractor):
             'thumbnail': r're:^https?://.*\.jpg$',
         },
     }, {
-        'url': 'https://www.daserste.de/information/reportage-dokumentation/erlebnis-erde/videosextern/woelfe-und-herdenschutzhunde-ungleiche-brueder-102.html',
+        'url': 'https://www.daserste.de/information/politik-weltgeschehen/morgenmagazin/videosextern/dominik-kahun-aus-der-nhl-direkt-zur-weltmeisterschaft-100.html',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.daserste.de/information/nachrichten-wetter/tagesthemen/videosextern/tagesthemen-17736.html',
         'only_matching': True,
     }, {
         'url': 'http://www.daserste.de/information/reportage-dokumentation/dokus/videos/die-story-im-ersten-mission-unter-falscher-flagge-100.html',
         'only_matching': True,
+    }, {
+        'url': 'https://www.daserste.de/unterhaltung/serie/in-aller-freundschaft-die-jungen-aerzte/Drehpause-100.html',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.daserste.de/unterhaltung/film/filmmittwoch-im-ersten/videos/making-ofwendezeit-video-100.html',
+        'only_matching': True,
     }]
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
-        display_id = mobj.group('display_id')
+        display_id = mobj.group('id')
 
         player_url = mobj.group('mainurl') + '~playerXml.xml'
         doc = self._download_xml(player_url, display_id)
@@ -324,7 +333,7 @@ class ARDIE(InfoExtractor):
         self._sort_formats(formats)
 
         return {
-            'id': mobj.group('id'),
+            'id': xpath_text(video_node, './videoId', default=display_id),
             'formats': formats,
             'display_id': display_id,
             'title': video_node.find('./title').text,
diff --git a/youtube_dl/extractor/bilibili.py b/youtube_dl/extractor/bilibili.py
index 589fdc1ce..bff6ea194 100644
--- a/youtube_dl/extractor/bilibili.py
+++ b/youtube_dl/extractor/bilibili.py
@@ -233,7 +233,7 @@ class BiliBiliIE(InfoExtractor):
             webpage)
         if uploader_mobj:
             info.update({
-                'uploader': uploader_mobj.group('name'),
+                'uploader': uploader_mobj.group('name').strip(),
                 'uploader_id': uploader_mobj.group('id'),
             })
         if not info.get('uploader'):
diff --git a/youtube_dl/extractor/curiositystream.py b/youtube_dl/extractor/curiositystream.py
index ae64a07d7..48ff30432 100644
--- a/youtube_dl/extractor/curiositystream.py
+++ b/youtube_dl/extractor/curiositystream.py
@@ -145,7 +145,7 @@ class CuriosityStreamIE(CuriosityStreamBaseIE):
 
 class CuriosityStreamCollectionIE(CuriosityStreamBaseIE):
     IE_NAME = 'curiositystream:collection'
-    _VALID_URL = r'https?://(?:app\.)?curiositystream\.com/(?:collection|series)/(?P<id>\d+)'
+    _VALID_URL = r'https?://(?:app\.)?curiositystream\.com/(?:collections?|series)/(?P<id>\d+)'
     _TESTS = [{
         'url': 'https://app.curiositystream.com/collection/2',
         'info_dict': {
@@ -157,6 +157,9 @@ class CuriosityStreamCollectionIE(CuriosityStreamBaseIE):
     }, {
         'url': 'https://curiositystream.com/series/2',
         'only_matching': True,
+    }, {
+        'url': 'https://curiositystream.com/collections/36',
+        'only_matching': True,
     }]
 
     def _real_extract(self, url):
diff --git a/youtube_dl/extractor/egghead.py b/youtube_dl/extractor/egghead.py
index aff9b88c0..9bbd703e0 100644
--- a/youtube_dl/extractor/egghead.py
+++ b/youtube_dl/extractor/egghead.py
@@ -22,16 +22,19 @@ class EggheadBaseIE(InfoExtractor):
 class EggheadCourseIE(EggheadBaseIE):
     IE_DESC = 'egghead.io course'
     IE_NAME = 'egghead:course'
-    _VALID_URL = r'https://egghead\.io/courses/(?P<id>[^/?#&]+)'
-    _TEST = {
+    _VALID_URL = r'https://(?:app\.)?egghead\.io/(?:course|playlist)s/(?P<id>[^/?#&]+)'
+    _TESTS = [{
         'url': 'https://egghead.io/courses/professor-frisby-introduces-composable-functional-javascript',
         'playlist_count': 29,
         'info_dict': {
-            'id': '72',
+            'id': '432655',
             'title': 'Professor Frisby Introduces Composable Functional JavaScript',
             'description': 're:(?s)^This course teaches the ubiquitous.*You\'ll start composing functionality before you know it.$',
         },
-    }
+    }, {
+        'url': 'https://app.egghead.io/playlists/professor-frisby-introduces-composable-functional-javascript',
+        'only_matching': True,
+    }]
 
     def _real_extract(self, url):
         playlist_id = self._match_id(url)
@@ -65,7 +68,7 @@ class EggheadCourseIE(EggheadBaseIE):
 class EggheadLessonIE(EggheadBaseIE):
     IE_DESC = 'egghead.io lesson'
     IE_NAME = 'egghead:lesson'
-    _VALID_URL = r'https://egghead\.io/(?:api/v1/)?lessons/(?P<id>[^/?#&]+)'
+    _VALID_URL = r'https://(?:app\.)?egghead\.io/(?:api/v1/)?lessons/(?P<id>[^/?#&]+)'
     _TESTS = [{
         'url': 'https://egghead.io/lessons/javascript-linear-data-flow-with-container-style-types-box',
         'info_dict': {
@@ -88,6 +91,9 @@ class EggheadLessonIE(EggheadBaseIE):
     }, {
         'url': 'https://egghead.io/api/v1/lessons/react-add-redux-to-a-react-application',
         'only_matching': True,
+    }, {
+        'url': 'https://app.egghead.io/lessons/javascript-linear-data-flow-with-container-style-types-box',
+        'only_matching': True,
     }]
 
     def _real_extract(self, url):
diff --git a/youtube_dl/extractor/eroprofile.py b/youtube_dl/extractor/eroprofile.py
index c08643a17..c460dc7f9 100644
--- a/youtube_dl/extractor/eroprofile.py
+++ b/youtube_dl/extractor/eroprofile.py
@@ -6,7 +6,7 @@ from .common import InfoExtractor
 from ..compat import compat_urllib_parse_urlencode
 from ..utils import (
     ExtractorError,
-    unescapeHTML
+    merge_dicts,
 )
 
 
@@ -24,7 +24,8 @@ class EroProfileIE(InfoExtractor):
             'title': 'sexy babe softcore',
             'thumbnail': r're:https?://.*\.jpg',
             'age_limit': 18,
-        }
+        },
+        'skip': 'Video not found',
     }, {
         'url': 'http://www.eroprofile.com/m/videos/view/Try-It-On-Pee_cut_2-wmv-4shared-com-file-sharing-download-movie-file',
         'md5': '1baa9602ede46ce904c431f5418d8916',
@@ -77,19 +78,15 @@ class EroProfileIE(InfoExtractor):
             [r"glbUpdViews\s*\('\d*','(\d+)'", r'p/report/video/(\d+)'],
             webpage, 'video id', default=None)
 
-        video_url = unescapeHTML(self._search_regex(
-            r'<source src="([^"]+)', webpage, 'video url'))
         title = self._html_search_regex(
-            r'Title:</th><td>([^<]+)</td>', webpage, 'title')
-        thumbnail = self._search_regex(
-            r'onclick="showVideoPlayer\(\)"><img src="([^"]+)',
-            webpage, 'thumbnail', fatal=False)
+            (r'Title:</th><td>([^<]+)</td>', r'<h1[^>]*>(.+?)</h1>'),
+            webpage, 'title')
 
-        return {
+        info = self._parse_html5_media_entries(url, webpage, video_id)[0]
+
+        return merge_dicts(info, {
             'id': video_id,
             'display_id': display_id,
-            'url': video_url,
             'title': title,
-            'thumbnail': thumbnail,
             'age_limit': 18,
-        }
+        })
diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py
index 71584b1e6..6e8fc3961 100644
--- a/youtube_dl/extractor/extractors.py
+++ b/youtube_dl/extractor/extractors.py
@@ -610,10 +610,6 @@ from .linkedin import (
 from .linuxacademy import LinuxAcademyIE
 from .litv import LiTVIE
 from .livejournal import LiveJournalIE
-from .liveleak import (
-    LiveLeakIE,
-    LiveLeakEmbedIE,
-)
 from .livestream import (
     LivestreamIE,
     LivestreamOriginalIE,
@@ -925,6 +921,7 @@ from .platzi import (
 from .playfm import PlayFMIE
 from .playplustv import PlayPlusTVIE
 from .plays import PlaysTVIE
+from .playstuff import PlayStuffIE
 from .playtvak import PlaytvakIE
 from .playvid import PlayvidIE
 from .playwire import PlaywireIE
diff --git a/youtube_dl/extractor/facebook.py b/youtube_dl/extractor/facebook.py
index cb34c59f5..04650af39 100644
--- a/youtube_dl/extractor/facebook.py
+++ b/youtube_dl/extractor/facebook.py
@@ -521,7 +521,10 @@ class FacebookIE(InfoExtractor):
                 raise ExtractorError(
                     'The video is not available, Facebook said: "%s"' % m_msg.group(1),
                     expected=True)
-            elif '>You must log in to continue' in webpage:
+            elif any(p in webpage for p in (
+                    '>You must log in to continue',
+                    'id="login_form"',
+                    'id="loginbutton"')):
                 self.raise_login_required()
 
         if not video_data and '/watchparty/' in url:
diff --git a/youtube_dl/extractor/formula1.py b/youtube_dl/extractor/formula1.py
index fecfc28ae..67662e6de 100644
--- a/youtube_dl/extractor/formula1.py
+++ b/youtube_dl/extractor/formula1.py
@@ -5,29 +5,23 @@ from .common import InfoExtractor
 
 
 class Formula1IE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www\.)?formula1\.com/(?:content/fom-website/)?en/video/\d{4}/\d{1,2}/(?P<id>.+?)\.html'
-    _TESTS = [{
-        'url': 'http://www.formula1.com/content/fom-website/en/video/2016/5/Race_highlights_-_Spain_2016.html',
-        'md5': '8c79e54be72078b26b89e0e111c0502b',
+    _VALID_URL = r'https?://(?:www\.)?formula1\.com/en/latest/video\.[^.]+\.(?P<id>\d+)\.html'
+    _TEST = {
+        'url': 'https://www.formula1.com/en/latest/video.race-highlights-spain-2016.6060988138001.html',
+        'md5': 'be7d3a8c2f804eb2ab2aa5d941c359f8',
         'info_dict': {
-            'id': 'JvYXJpMzE6pArfHWm5ARp5AiUmD-gibV',
+            'id': '6060988138001',
             'ext': 'mp4',
             'title': 'Race highlights - Spain 2016',
+            'timestamp': 1463332814,
+            'upload_date': '20160515',
+            'uploader_id': '6057949432001',
         },
-        'params': {
-            # m3u8 download
-            'skip_download': True,
-        },
-        'add_ie': ['Ooyala'],
-    }, {
-        'url': 'http://www.formula1.com/en/video/2016/5/Race_highlights_-_Spain_2016.html',
-        'only_matching': True,
-    }]
+        'add_ie': ['BrightcoveNew'],
+    }
+    BRIGHTCOVE_URL_TEMPLATE = 'http://players.brightcove.net/6057949432001/S1WMrhjlh_default/index.html?videoId=%s'
 
     def _real_extract(self, url):
-        display_id = self._match_id(url)
-        webpage = self._download_webpage(url, display_id)
-        ooyala_embed_code = self._search_regex(
-            r'data-videoid="([^"]+)"', webpage, 'ooyala embed code')
+        bc_id = self._match_id(url)
         return self.url_result(
-            'ooyala:%s' % ooyala_embed_code, 'Ooyala', ooyala_embed_code)
+            self.BRIGHTCOVE_URL_TEMPLATE % bc_id, 'BrightcoveNew', bc_id)
diff --git a/youtube_dl/extractor/generic.py b/youtube_dl/extractor/generic.py
index f99d887ca..a9c064105 100644
--- a/youtube_dl/extractor/generic.py
+++ b/youtube_dl/extractor/generic.py
@@ -84,7 +84,6 @@ from .jwplatform import JWPlatformIE
 from .digiteka import DigitekaIE
 from .arkena import ArkenaIE
 from .instagram import InstagramIE
-from .liveleak import LiveLeakIE
 from .threeqsdn import ThreeQSDNIE
 from .theplatform import ThePlatformIE
 from .kaltura import KalturaIE
@@ -126,6 +125,7 @@ from .viqeo import ViqeoIE
 from .expressen import ExpressenIE
 from .zype import ZypeIE
 from .odnoklassniki import OdnoklassnikiIE
+from .vk import VKIE
 from .kinja import KinjaEmbedIE
 from .arcpublishing import ArcPublishingIE
 from .medialaan import MedialaanIE
@@ -1628,31 +1628,6 @@ class GenericIE(InfoExtractor):
                 'upload_date': '20160409',
             },
         },
-        # LiveLeak embed
-        {
-            'url': 'http://www.wykop.pl/link/3088787/',
-            'md5': '7619da8c820e835bef21a1efa2a0fc71',
-            'info_dict': {
-                'id': '874_1459135191',
-                'ext': 'mp4',
-                'title': 'Man shows poor quality of new apartment building',
-                'description': 'The wall is like a sand pile.',
-                'uploader': 'Lake8737',
-            },
-            'add_ie': [LiveLeakIE.ie_key()],
-        },
-        # Another LiveLeak embed pattern (#13336)
-        {
-            'url': 'https://milo.yiannopoulos.net/2017/06/concealed-carry-robbery/',
-            'info_dict': {
-                'id': '2eb_1496309988',
-                'ext': 'mp4',
-                'title': 'Thief robs place where everyone was armed',
-                'description': 'md5:694d73ee79e535953cf2488562288eee',
-                'uploader': 'brazilwtf',
-            },
-            'add_ie': [LiveLeakIE.ie_key()],
-        },
         # Duplicated embedded video URLs
         {
             'url': 'http://www.hudl.com/athlete/2538180/highlights/149298443',
@@ -2248,6 +2223,11 @@ class GenericIE(InfoExtractor):
             },
             'playlist_mincount': 52,
         },
+        {
+            # Sibnet embed (https://help.sibnet.ru/?sibnet_video_embed)
+            'url': 'https://phpbb3.x-tk.ru/bbcode-video-sibnet-t24.html',
+            'only_matching': True,
+        },
     ]
 
     def report_following_redirect(self, new_url):
@@ -2777,6 +2757,11 @@ class GenericIE(InfoExtractor):
         if odnoklassniki_url:
             return self.url_result(odnoklassniki_url, OdnoklassnikiIE.ie_key())
 
+        # Look for sibnet embedded player
+        sibnet_urls = VKIE._extract_sibnet_urls(webpage)
+        if sibnet_urls:
+            return self.playlist_from_matches(sibnet_urls, video_id, video_title)
+
         # Look for embedded ivi player
         mobj = re.search(r'<embed[^>]+?src=(["\'])(?P<url>https?://(?:www\.)?ivi\.ru/video/player.+?)\1', webpage)
         if mobj is not None:
@@ -3168,11 +3153,6 @@ class GenericIE(InfoExtractor):
             return self.url_result(
                 self._proto_relative_url(instagram_embed_url), InstagramIE.ie_key())
 
-        # Look for LiveLeak embeds
-        liveleak_urls = LiveLeakIE._extract_urls(webpage)
-        if liveleak_urls:
-            return self.playlist_from_matches(liveleak_urls, video_id, video_title)
-
         # Look for 3Q SDN embeds
         threeqsdn_url = ThreeQSDNIE._extract_url(webpage)
         if threeqsdn_url:
@@ -3400,6 +3380,9 @@ class GenericIE(InfoExtractor):
                         'url': src,
                         'ext': (mimetype2ext(src_type)
                                 or ext if ext in KNOWN_EXTENSIONS else 'mp4'),
+                        'http_headers': {
+                            'Referer': full_response.geturl(),
+                        },
                     })
             if formats:
                 self._sort_formats(formats)
@@ -3468,7 +3451,7 @@ class GenericIE(InfoExtractor):
             m_video_type = re.findall(r'<meta.*?property="og:video:type".*?content="video/(.*?)"', webpage)
             # We only look in og:video if the MIME type is a video, don't try if it's a Flash player:
             if m_video_type is not None:
-                found = filter_video(re.findall(r'<meta.*?property="og:video".*?content="(.*?)"', webpage))
+                found = filter_video(re.findall(r'<meta.*?property="og:(?:video|audio)".*?content="(.*?)"', webpage))
         if not found:
             REDIRECT_REGEX = r'[0-9]{,2};\s*(?:URL|url)=\'?([^\'"]+)'
             found = re.search(
diff --git a/youtube_dl/extractor/liveleak.py b/youtube_dl/extractor/liveleak.py
deleted file mode 100644
index 4ac437c8b..000000000
--- a/youtube_dl/extractor/liveleak.py
+++ /dev/null
@@ -1,191 +0,0 @@
-from __future__ import unicode_literals
-
-import re
-
-from .common import InfoExtractor
-from ..utils import int_or_none
-
-
-class LiveLeakIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:\w+\.)?liveleak\.com/view\?.*?\b[it]=(?P<id>[\w_]+)'
-    _TESTS = [{
-        'url': 'http://www.liveleak.com/view?i=757_1364311680',
-        'md5': '0813c2430bea7a46bf13acf3406992f4',
-        'info_dict': {
-            'id': '757_1364311680',
-            'ext': 'mp4',
-            'description': 'extremely bad day for this guy..!',
-            'uploader': 'ljfriel2',
-            'title': 'Most unlucky car accident',
-            'thumbnail': r're:^https?://.*\.jpg$'
-        }
-    }, {
-        'url': 'http://www.liveleak.com/view?i=f93_1390833151',
-        'md5': 'd3f1367d14cc3c15bf24fbfbe04b9abf',
-        'info_dict': {
-            'id': 'f93_1390833151',
-            'ext': 'mp4',
-            'description': 'German Television Channel NDR does an exclusive interview with Edward Snowden.\r\nUploaded on LiveLeak cause German Television thinks the rest of the world isn\'t intereseted in Edward Snowden.',
-            'uploader': 'ARD_Stinkt',
-            'title': 'German Television does first Edward Snowden Interview (ENGLISH)',
-            'thumbnail': r're:^https?://.*\.jpg$'
-        }
-    }, {
-        # Prochan embed
-        'url': 'http://www.liveleak.com/view?i=4f7_1392687779',
-        'md5': '42c6d97d54f1db107958760788c5f48f',
-        'info_dict': {
-            'id': '4f7_1392687779',
-            'ext': 'mp4',
-            'description': "The guy with the cigarette seems amazingly nonchalant about the whole thing...  I really hope my friends' reactions would be a bit stronger.\r\n\r\nAction-go to 0:55.",
-            'uploader': 'CapObveus',
-            'title': 'Man is Fatally Struck by Reckless Car While Packing up a Moving Truck',
-            'age_limit': 18,
-        },
-        'skip': 'Video is dead',
-    }, {
-        # Covers https://github.com/ytdl-org/youtube-dl/pull/5983
-        # Multiple resolutions
-        'url': 'http://www.liveleak.com/view?i=801_1409392012',
-        'md5': 'c3a449dbaca5c0d1825caecd52a57d7b',
-        'info_dict': {
-            'id': '801_1409392012',
-            'ext': 'mp4',
-            'description': 'Happened on 27.7.2014. \r\nAt 0:53 you can see people still swimming at near beach.',
-            'uploader': 'bony333',
-            'title': 'Crazy Hungarian tourist films close call waterspout in Croatia',
-            'thumbnail': r're:^https?://.*\.jpg$'
-        }
-    }, {
-        # Covers https://github.com/ytdl-org/youtube-dl/pull/10664#issuecomment-247439521
-        'url': 'http://m.liveleak.com/view?i=763_1473349649',
-        'add_ie': ['Youtube'],
-        'info_dict': {
-            'id': '763_1473349649',
-            'ext': 'mp4',
-            'title': 'Reporters and public officials ignore epidemic of black on asian violence in Sacramento | Colin Flaherty',
-            'description': 'Colin being the warrior he is and showing the injustice Asians in Sacramento are being subjected to.',
-            'uploader': 'Ziz',
-            'upload_date': '20160908',
-            'uploader_id': 'UCEbta5E_jqlZmEJsriTEtnw'
-        },
-        'params': {
-            'skip_download': True,
-        },
-    }, {
-        'url': 'https://www.liveleak.com/view?i=677_1439397581',
-        'info_dict': {
-            'id': '677_1439397581',
-            'title': 'Fuel Depot in China Explosion caught on video',
-        },
-        'playlist_count': 3,
-    }, {
-        'url': 'https://www.liveleak.com/view?t=HvHi_1523016227',
-        'only_matching': True,
-    }, {
-        # No original video
-        'url': 'https://www.liveleak.com/view?t=C26ZZ_1558612804',
-        'only_matching': True,
-    }]
-
-    @staticmethod
-    def _extract_urls(webpage):
-        return re.findall(
-            r'<iframe[^>]+src="(https?://(?:\w+\.)?liveleak\.com/ll_embed\?[^"]*[ift]=[\w_]+[^"]+)"',
-            webpage)
-
-    def _real_extract(self, url):
-        video_id = self._match_id(url)
-        webpage = self._download_webpage(url, video_id)
-
-        video_title = self._og_search_title(webpage).replace('LiveLeak.com -', '').strip()
-        video_description = self._og_search_description(webpage)
-        video_uploader = self._html_search_regex(
-            r'By:.*?(\w+)</a>', webpage, 'uploader', fatal=False)
-        age_limit = int_or_none(self._search_regex(
-            r'you confirm that you are ([0-9]+) years and over.',
-            webpage, 'age limit', default=None))
-        video_thumbnail = self._og_search_thumbnail(webpage)
-
-        entries = self._parse_html5_media_entries(url, webpage, video_id)
-        if not entries:
-            # Maybe an embed?
-            embed_url = self._search_regex(
-                r'<iframe[^>]+src="((?:https?:)?//(?:www\.)?(?:prochan|youtube)\.com/embed[^"]+)"',
-                webpage, 'embed URL')
-            return {
-                '_type': 'url_transparent',
-                'url': embed_url,
-                'id': video_id,
-                'title': video_title,
-                'description': video_description,
-                'uploader': video_uploader,
-                'age_limit': age_limit,
-            }
-
-        for idx, info_dict in enumerate(entries):
-            formats = []
-            for a_format in info_dict['formats']:
-                if not a_format.get('height'):
-                    a_format['height'] = int_or_none(self._search_regex(
-                        r'([0-9]+)p\.mp4', a_format['url'], 'height label',
-                        default=None))
-                formats.append(a_format)
-
-                # Removing '.*.mp4' gives the raw video, which is essentially
-                # the same video without the LiveLeak logo at the top (see
-                # https://github.com/ytdl-org/youtube-dl/pull/4768)
-                orig_url = re.sub(r'\.mp4\.[^.]+', '', a_format['url'])
-                if a_format['url'] != orig_url:
-                    format_id = a_format.get('format_id')
-                    format_id = 'original' + ('-' + format_id if format_id else '')
-                    if self._is_valid_url(orig_url, video_id, format_id):
-                        formats.append({
-                            'format_id': format_id,
-                            'url': orig_url,
-                            'preference': 1,
-                        })
-            self._sort_formats(formats)
-            info_dict['formats'] = formats
-
-            # Don't append entry ID for one-video pages to keep backward compatibility
-            if len(entries) > 1:
-                info_dict['id'] = '%s_%s' % (video_id, idx + 1)
-            else:
-                info_dict['id'] = video_id
-
-            info_dict.update({
-                'title': video_title,
-                'description': video_description,
-                'uploader': video_uploader,
-                'age_limit': age_limit,
-                'thumbnail': video_thumbnail,
-            })
-
-        return self.playlist_result(entries, video_id, video_title)
-
-
-class LiveLeakEmbedIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www\.)?liveleak\.com/ll_embed\?.*?\b(?P<kind>[ift])=(?P<id>[\w_]+)'
-
-    # See generic.py for actual test cases
-    _TESTS = [{
-        'url': 'https://www.liveleak.com/ll_embed?i=874_1459135191',
-        'only_matching': True,
-    }, {
-        'url': 'https://www.liveleak.com/ll_embed?f=ab065df993c1',
-        'only_matching': True,
-    }]
-
-    def _real_extract(self, url):
-        kind, video_id = re.match(self._VALID_URL, url).groups()
-
-        if kind == 'f':
-            webpage = self._download_webpage(url, video_id)
-            liveleak_url = self._search_regex(
-                r'(?:logourl\s*:\s*|window\.open\()(?P<q1>[\'"])(?P<url>%s)(?P=q1)' % LiveLeakIE._VALID_URL,
-                webpage, 'LiveLeak URL', group='url')
-        else:
-            liveleak_url = 'http://www.liveleak.com/view?%s=%s' % (kind, video_id)
-
-        return self.url_result(liveleak_url, ie=LiveLeakIE.ie_key())
diff --git a/youtube_dl/extractor/nrk.py b/youtube_dl/extractor/nrk.py
index 40dee2162..6d01a25c3 100644
--- a/youtube_dl/extractor/nrk.py
+++ b/youtube_dl/extractor/nrk.py
@@ -58,7 +58,7 @@ class NRKBaseIE(InfoExtractor):
 
     def _call_api(self, path, video_id, item=None, note=None, fatal=True, query=None):
         return self._download_json(
-            urljoin('http://psapi.nrk.no/', path),
+            urljoin('https://psapi.nrk.no/', path),
             video_id, note or 'Downloading %s JSON' % item,
             fatal=fatal, query=query,
             headers={'Accept-Encoding': 'gzip, deflate, br'})
diff --git a/youtube_dl/extractor/orf.py b/youtube_dl/extractor/orf.py
index 700ce448c..8d537d7ae 100644
--- a/youtube_dl/extractor/orf.py
+++ b/youtube_dl/extractor/orf.py
@@ -98,6 +98,9 @@ class ORFTVthekIE(InfoExtractor):
                 elif ext == 'f4m':
                     formats.extend(self._extract_f4m_formats(
                         src, video_id, f4m_id=format_id, fatal=False))
+                elif ext == 'mpd':
+                    formats.extend(self._extract_mpd_formats(
+                        src, video_id, mpd_id=format_id, fatal=False))
                 else:
                     formats.append({
                         'format_id': format_id,
@@ -140,6 +143,25 @@ class ORFTVthekIE(InfoExtractor):
                 })
 
             upload_date = unified_strdate(sd.get('created_date'))
+
+            thumbnails = []
+            preview = sd.get('preview_image_url')
+            if preview:
+                thumbnails.append({
+                    'id': 'preview',
+                    'url': preview,
+                    'preference': 0,
+                })
+            image = sd.get('image_full_url')
+            if not image and len(data_jsb) == 1:
+                image = self._og_search_thumbnail(webpage)
+            if image:
+                thumbnails.append({
+                    'id': 'full',
+                    'url': image,
+                    'preference': 1,
+                })
+
             entries.append({
                 '_type': 'video',
                 'id': video_id,
@@ -149,7 +171,7 @@ class ORFTVthekIE(InfoExtractor):
                 'description': sd.get('description'),
                 'duration': int_or_none(sd.get('duration_in_seconds')),
                 'upload_date': upload_date,
-                'thumbnail': sd.get('image_full_url'),
+                'thumbnails': thumbnails,
             })
 
         return {
@@ -182,7 +204,7 @@ class ORFRadioIE(InfoExtractor):
             duration = end - start if end and start else None
             entries.append({
                 'id': loop_stream_id.replace('.mp3', ''),
-                'url': 'http://loopstream01.apa.at/?channel=%s&id=%s' % (self._LOOP_STATION, loop_stream_id),
+                'url': 'https://loopstream01.apa.at/?channel=%s&id=%s' % (self._LOOP_STATION, loop_stream_id),
                 'title': title,
                 'description': clean_html(data.get('subtitle')),
                 'duration': duration,
diff --git a/youtube_dl/extractor/peertube.py b/youtube_dl/extractor/peertube.py
index d9b13adc2..3af533925 100644
--- a/youtube_dl/extractor/peertube.py
+++ b/youtube_dl/extractor/peertube.py
@@ -569,15 +569,15 @@ class PeerTubeIE(InfoExtractor):
             formats.append(f)
         self._sort_formats(formats)
 
-        full_description = self._call_api(
-            host, video_id, 'description', note='Downloading description JSON',
-            fatal=False)
+        description = video.get('description')
+        if len(description) >= 250:
+            # description is shortened
+            full_description = self._call_api(
+                host, video_id, 'description', note='Downloading description JSON',
+                fatal=False)
 
-        description = None
-        if isinstance(full_description, dict):
-            description = str_or_none(full_description.get('description'))
-        if not description:
-            description = video.get('description')
+            if isinstance(full_description, dict):
+                description = str_or_none(full_description.get('description')) or description
 
         subtitles = self.extract_subtitles(host, video_id)
 
diff --git a/youtube_dl/extractor/periscope.py b/youtube_dl/extractor/periscope.py
index b15906390..b93a02b7d 100644
--- a/youtube_dl/extractor/periscope.py
+++ b/youtube_dl/extractor/periscope.py
@@ -12,6 +12,10 @@ from ..utils import (
 
 
 class PeriscopeBaseIE(InfoExtractor):
+    _M3U8_HEADERS = {
+        'Referer': 'https://www.periscope.tv/'
+    }
+
     def _call_api(self, method, query, item_id):
         return self._download_json(
             'https://api.periscope.tv/api/v2/%s' % method,
@@ -54,9 +58,11 @@ class PeriscopeBaseIE(InfoExtractor):
             m3u8_url, video_id, 'mp4',
             entry_protocol='m3u8_native'
             if state in ('ended', 'timed_out') else 'm3u8',
-            m3u8_id=format_id, fatal=fatal)
+            m3u8_id=format_id, fatal=fatal, headers=self._M3U8_HEADERS)
         if len(m3u8_formats) == 1:
             self._add_width_and_height(m3u8_formats[0], width, height)
+        for f in m3u8_formats:
+            f.setdefault('http_headers', {}).update(self._M3U8_HEADERS)
         return m3u8_formats
 
 
diff --git a/youtube_dl/extractor/phoenix.py b/youtube_dl/extractor/phoenix.py
index dbbfce983..e3ea01443 100644
--- a/youtube_dl/extractor/phoenix.py
+++ b/youtube_dl/extractor/phoenix.py
@@ -9,8 +9,9 @@ from ..compat import compat_str
 from ..utils import (
     int_or_none,
     merge_dicts,
+    try_get,
     unified_timestamp,
-    xpath_text,
+    urljoin,
 )
 
 
@@ -27,10 +28,11 @@ class PhoenixIE(ZDFBaseIE):
             'title': 'Wohin führt der Protest in der Pandemie?',
             'description': 'md5:7d643fe7f565e53a24aac036b2122fbd',
             'duration': 1691,
-            'timestamp': 1613906100,
+            'timestamp': 1613902500,
             'upload_date': '20210221',
             'uploader': 'Phoenix',
-            'channel': 'corona nachgehakt',
+            'series': 'corona nachgehakt',
+            'episode': 'Wohin führt der Protest in der Pandemie?',
         },
     }, {
         # Youtube embed
@@ -79,50 +81,53 @@ class PhoenixIE(ZDFBaseIE):
 
         video_id = compat_str(video.get('basename') or video.get('content'))
 
-        details = self._download_xml(
+        details = self._download_json(
             'https://www.phoenix.de/php/mediaplayer/data/beitrags_details.php',
-            video_id, 'Downloading details XML', query={
+            video_id, 'Downloading details JSON', query={
                 'ak': 'web',
                 'ptmd': 'true',
                 'id': video_id,
                 'profile': 'player2',
             })
 
-        title = title or xpath_text(
-            details, './/information/title', 'title', fatal=True)
-        content_id = xpath_text(
-            details, './/video/details/basename', 'content id', fatal=True)
+        title = title or details['title']
+        content_id = details['tracking']['nielsen']['content']['assetid']
 
         info = self._extract_ptmd(
             'https://tmd.phoenix.de/tmd/2/ngplayer_2_3/vod/ptmd/phoenix/%s' % content_id,
             content_id, None, url)
 
-        timestamp = unified_timestamp(xpath_text(details, './/details/airtime'))
+        duration = int_or_none(try_get(
+            details, lambda x: x['tracking']['nielsen']['content']['length']))
+        timestamp = unified_timestamp(details.get('editorialDate'))
+        series = try_get(
+            details, lambda x: x['tracking']['nielsen']['content']['program'],
+            compat_str)
+        episode = title if details.get('contentType') == 'episode' else None
 
         thumbnails = []
-        for node in details.findall('.//teaserimages/teaserimage'):
-            thumbnail_url = node.text
+        teaser_images = try_get(details, lambda x: x['teaserImageRef']['layouts'], dict) or {}
+        for thumbnail_key, thumbnail_url in teaser_images.items():
+            thumbnail_url = urljoin(url, thumbnail_url)
             if not thumbnail_url:
                 continue
             thumbnail = {
                 'url': thumbnail_url,
             }
-            thumbnail_key = node.get('key')
-            if thumbnail_key:
-                m = re.match('^([0-9]+)x([0-9]+)$', thumbnail_key)
-                if m:
-                    thumbnail['width'] = int(m.group(1))
-                    thumbnail['height'] = int(m.group(2))
+            m = re.match('^([0-9]+)x([0-9]+)$', thumbnail_key)
+            if m:
+                thumbnail['width'] = int(m.group(1))
+                thumbnail['height'] = int(m.group(2))
             thumbnails.append(thumbnail)
 
         return merge_dicts(info, {
             'id': content_id,
             'title': title,
-            'description': xpath_text(details, './/information/detail'),
-            'duration': int_or_none(xpath_text(details, './/details/lengthSec')),
+            'description': details.get('leadParagraph'),
+            'duration': duration,
             'thumbnails': thumbnails,
             'timestamp': timestamp,
-            'uploader': xpath_text(details, './/details/channel'),
-            'uploader_id': xpath_text(details, './/details/originChannelId'),
-            'channel': xpath_text(details, './/details/originChannelTitle'),
+            'uploader': details.get('tvService'),
+            'series': series,
+            'episode': episode,
         })
diff --git a/youtube_dl/extractor/playstuff.py b/youtube_dl/extractor/playstuff.py
new file mode 100644
index 000000000..5a329957f
--- /dev/null
+++ b/youtube_dl/extractor/playstuff.py
@@ -0,0 +1,65 @@
+from __future__ import unicode_literals
+
+from .common import InfoExtractor
+from ..compat import compat_str
+from ..utils import (
+    smuggle_url,
+    try_get,
+)
+
+
+class PlayStuffIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:www\.)?play\.stuff\.co\.nz/details/(?P<id>[^/?#&]+)'
+    _TESTS = [{
+        'url': 'https://play.stuff.co.nz/details/608778ac1de1c4001a3fa09a',
+        'md5': 'c82d3669e5247c64bc382577843e5bd0',
+        'info_dict': {
+            'id': '6250584958001',
+            'ext': 'mp4',
+            'title': 'Episode 1: Rotorua/Mt Maunganui/Tauranga',
+            'description': 'md5:c154bafb9f0dd02d01fd4100fb1c1913',
+            'uploader_id': '6005208634001',
+            'timestamp': 1619491027,
+            'upload_date': '20210427',
+        },
+        'add_ie': ['BrightcoveNew'],
+    }, {
+        # geo restricted, bypassable
+        'url': 'https://play.stuff.co.nz/details/_6155660351001',
+        'only_matching': True,
+    }]
+    BRIGHTCOVE_URL_TEMPLATE = 'http://players.brightcove.net/%s/%s_default/index.html?videoId=%s'
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+
+        webpage = self._download_webpage(url, video_id)
+
+        state = self._parse_json(
+            self._search_regex(
+                r'__INITIAL_STATE__\s*=\s*({.+?})\s*;', webpage, 'state'),
+            video_id)
+
+        account_id = try_get(
+            state, lambda x: x['configurations']['accountId'],
+            compat_str) or '6005208634001'
+        player_id = try_get(
+            state, lambda x: x['configurations']['playerId'],
+            compat_str) or 'default'
+
+        entries = []
+        for item_id, video in state['items'].items():
+            if not isinstance(video, dict):
+                continue
+            asset_id = try_get(
+                video, lambda x: x['content']['attributes']['assetId'],
+                compat_str)
+            if not asset_id:
+                continue
+            entries.append(self.url_result(
+                smuggle_url(
+                    self.BRIGHTCOVE_URL_TEMPLATE % (account_id, player_id, asset_id),
+                    {'geo_countries': ['NZ']}),
+                'BrightcoveNew', video_id))
+
+        return self.playlist_result(entries, video_id)
diff --git a/youtube_dl/extractor/pornhub.py b/youtube_dl/extractor/pornhub.py
index 031454600..e2e1500ff 100644
--- a/youtube_dl/extractor/pornhub.py
+++ b/youtube_dl/extractor/pornhub.py
@@ -30,6 +30,7 @@ from ..utils import (
 
 class PornHubBaseIE(InfoExtractor):
     _NETRC_MACHINE = 'pornhub'
+    _PORNHUB_HOST_RE = r'(?:(?P<host>pornhub(?:premium)?\.(?:com|net|org))|pornhubthbh7ap3u\.onion)'
 
     def _download_webpage_handle(self, *args, **kwargs):
         def dl(*args, **kwargs):
@@ -122,11 +123,13 @@ class PornHubIE(PornHubBaseIE):
     _VALID_URL = r'''(?x)
                     https?://
                         (?:
-                            (?:[^/]+\.)?(?P<host>pornhub(?:premium)?\.(?:com|net|org))/(?:(?:view_video\.php|video/show)\?viewkey=|embed/)|
+                            (?:[^/]+\.)?
+                            %s
+                            /(?:(?:view_video\.php|video/show)\?viewkey=|embed/)|
                             (?:www\.)?thumbzilla\.com/video/
                         )
                         (?P<id>[\da-z]+)
-                    '''
+                    ''' % PornHubBaseIE._PORNHUB_HOST_RE
     _TESTS = [{
         'url': 'http://www.pornhub.com/view_video.php?viewkey=648719015',
         'md5': 'a6391306d050e4547f62b3f485dd9ba9',
@@ -236,6 +239,13 @@ class PornHubIE(PornHubBaseIE):
     }, {
         'url': 'https://www.pornhubpremium.com/view_video.php?viewkey=ph5f75b0f4b18e3',
         'only_matching': True,
+    }, {
+        # geo restricted
+        'url': 'https://www.pornhub.com/view_video.php?viewkey=ph5a9813bfa7156',
+        'only_matching': True,
+    }, {
+        'url': 'http://pornhubthbh7ap3u.onion/view_video.php?viewkey=ph5a9813bfa7156',
+        'only_matching': True,
     }]
 
     @staticmethod
@@ -275,6 +285,11 @@ class PornHubIE(PornHubBaseIE):
                 'PornHub said: %s' % error_msg,
                 expected=True, video_id=video_id)
 
+        if any(re.search(p, webpage) for p in (
+                r'class=["\']geoBlocked["\']',
+                r'>\s*This content is unavailable in your country')):
+            self.raise_geo_restricted()
+
         # video_title from flashvars contains whitespace instead of non-ASCII (see
         # http://www.pornhub.com/view_video.php?viewkey=1331683002), not relying
         # on that anymore.
@@ -408,17 +423,14 @@ class PornHubIE(PornHubBaseIE):
                     format_url, video_id, 'mp4', entry_protocol='m3u8_native',
                     m3u8_id='hls', fatal=False))
                 return
-            tbr = None
-            mobj = re.search(r'(?P<height>\d+)[pP]?_(?P<tbr>\d+)[kK]', format_url)
-            if mobj:
-                if not height:
-                    height = int(mobj.group('height'))
-                tbr = int(mobj.group('tbr'))
+            if not height:
+                height = int_or_none(self._search_regex(
+                    r'(?P<height>\d+)[pP]?_\d+[kK]', format_url, 'height',
+                    default=None))
             formats.append({
                 'url': format_url,
                 'format_id': '%dp' % height if height else None,
                 'height': height,
-                'tbr': tbr,
             })
 
         for video_url, height in video_urls:
@@ -440,7 +452,8 @@ class PornHubIE(PornHubBaseIE):
                         add_format(video_url, height)
                 continue
             add_format(video_url)
-        self._sort_formats(formats)
+        self._sort_formats(
+            formats, field_preference=('height', 'width', 'fps', 'format_id'))
 
         video_uploader = self._html_search_regex(
             r'(?s)From:&nbsp;.+?<(?:a\b[^>]+\bhref=["\']/(?:(?:user|channel)s|model|pornstar)/|span\b[^>]+\bclass=["\']username)[^>]+>(.+?)<',
@@ -513,7 +526,7 @@ class PornHubPlaylistBaseIE(PornHubBaseIE):
 
 
 class PornHubUserIE(PornHubPlaylistBaseIE):
-    _VALID_URL = r'(?P<url>https?://(?:[^/]+\.)?(?P<host>pornhub(?:premium)?\.(?:com|net|org))/(?:(?:user|channel)s|model|pornstar)/(?P<id>[^/?#&]+))(?:[?#&]|/(?!videos)|$)'
+    _VALID_URL = r'(?P<url>https?://(?:[^/]+\.)?%s/(?:(?:user|channel)s|model|pornstar)/(?P<id>[^/?#&]+))(?:[?#&]|/(?!videos)|$)' % PornHubBaseIE._PORNHUB_HOST_RE
     _TESTS = [{
         'url': 'https://www.pornhub.com/model/zoe_ph',
         'playlist_mincount': 118,
@@ -542,6 +555,9 @@ class PornHubUserIE(PornHubPlaylistBaseIE):
         # Same as before, multi page
         'url': 'https://www.pornhubpremium.com/pornstar/lily-labeau',
         'only_matching': True,
+    }, {
+        'url': 'https://pornhubthbh7ap3u.onion/model/zoe_ph',
+        'only_matching': True,
     }]
 
     def _real_extract(self, url):
@@ -617,7 +633,7 @@ class PornHubPagedPlaylistBaseIE(PornHubPlaylistBaseIE):
 
 
 class PornHubPagedVideoListIE(PornHubPagedPlaylistBaseIE):
-    _VALID_URL = r'https?://(?:[^/]+\.)?(?P<host>pornhub(?:premium)?\.(?:com|net|org))/(?P<id>(?:[^/]+/)*[^/?#&]+)'
+    _VALID_URL = r'https?://(?:[^/]+\.)?%s/(?P<id>(?:[^/]+/)*[^/?#&]+)' % PornHubBaseIE._PORNHUB_HOST_RE
     _TESTS = [{
         'url': 'https://www.pornhub.com/model/zoe_ph/videos',
         'only_matching': True,
@@ -722,6 +738,9 @@ class PornHubPagedVideoListIE(PornHubPagedPlaylistBaseIE):
     }, {
         'url': 'https://de.pornhub.com/playlist/4667351',
         'only_matching': True,
+    }, {
+        'url': 'https://pornhubthbh7ap3u.onion/model/zoe_ph/videos',
+        'only_matching': True,
     }]
 
     @classmethod
@@ -732,7 +751,7 @@ class PornHubPagedVideoListIE(PornHubPagedPlaylistBaseIE):
 
 
 class PornHubUserVideosUploadIE(PornHubPagedPlaylistBaseIE):
-    _VALID_URL = r'(?P<url>https?://(?:[^/]+\.)?(?P<host>pornhub(?:premium)?\.(?:com|net|org))/(?:(?:user|channel)s|model|pornstar)/(?P<id>[^/]+)/videos/upload)'
+    _VALID_URL = r'(?P<url>https?://(?:[^/]+\.)?%s/(?:(?:user|channel)s|model|pornstar)/(?P<id>[^/]+)/videos/upload)' % PornHubBaseIE._PORNHUB_HOST_RE
     _TESTS = [{
         'url': 'https://www.pornhub.com/pornstar/jenny-blighe/videos/upload',
         'info_dict': {
@@ -742,4 +761,7 @@ class PornHubUserVideosUploadIE(PornHubPagedPlaylistBaseIE):
     }, {
         'url': 'https://www.pornhub.com/model/zoe_ph/videos/upload',
         'only_matching': True,
+    }, {
+        'url': 'http://pornhubthbh7ap3u.onion/pornstar/jenny-blighe/videos/upload',
+        'only_matching': True,
     }]
diff --git a/youtube_dl/extractor/redbulltv.py b/youtube_dl/extractor/redbulltv.py
index 3aae79f5d..6d000b372 100644
--- a/youtube_dl/extractor/redbulltv.py
+++ b/youtube_dl/extractor/redbulltv.py
@@ -133,8 +133,10 @@ class RedBullEmbedIE(RedBullTVIE):
         rrn_id = self._match_id(url)
         asset_id = self._download_json(
             'https://edge-graphql.crepo-production.redbullaws.com/v1/graphql',
-            rrn_id, headers={'API-KEY': 'e90a1ff11335423998b100c929ecc866'},
-            query={
+            rrn_id, headers={
+                'Accept': 'application/json',
+                'API-KEY': 'e90a1ff11335423998b100c929ecc866',
+            }, query={
                 'query': '''{
   resource(id: "%s", enforceGeoBlocking: false) {
     %s
diff --git a/youtube_dl/extractor/shahid.py b/youtube_dl/extractor/shahid.py
index b5e093bd2..88b938e05 100644
--- a/youtube_dl/extractor/shahid.py
+++ b/youtube_dl/extractor/shahid.py
@@ -21,6 +21,7 @@ from ..utils import (
 class ShahidBaseIE(AWSIE):
     _AWS_PROXY_HOST = 'api2.shahid.net'
     _AWS_API_KEY = '2RRtuMHx95aNI1Kvtn2rChEuwsCogUd4samGPjLh'
+    _VALID_URL_BASE = r'https?://shahid\.mbc\.net/[a-z]{2}/'
 
     def _handle_error(self, e):
         fail_data = self._parse_json(
@@ -49,7 +50,7 @@ class ShahidBaseIE(AWSIE):
 
 class ShahidIE(ShahidBaseIE):
     _NETRC_MACHINE = 'shahid'
-    _VALID_URL = r'https?://shahid\.mbc\.net/ar/(?:serie|show|movie)s/[^/]+/(?P<type>episode|clip|movie)-(?P<id>\d+)'
+    _VALID_URL = ShahidBaseIE._VALID_URL_BASE + r'(?:serie|show|movie)s/[^/]+/(?P<type>episode|clip|movie)-(?P<id>\d+)'
     _TESTS = [{
         'url': 'https://shahid.mbc.net/ar/shows/%D9%85%D8%AA%D8%AD%D9%81-%D8%A7%D9%84%D8%AF%D8%AD%D9%8A%D8%AD-%D8%A7%D9%84%D9%85%D9%88%D8%B3%D9%85-1-%D9%83%D9%84%D9%8A%D8%A8-1/clip-816924',
         'info_dict': {
@@ -73,6 +74,9 @@ class ShahidIE(ShahidBaseIE):
         # shahid plus subscriber only
         'url': 'https://shahid.mbc.net/ar/series/%D9%85%D8%B1%D8%A7%D9%8A%D8%A7-2011-%D8%A7%D9%84%D9%85%D9%88%D8%B3%D9%85-1-%D8%A7%D9%84%D8%AD%D9%84%D9%82%D8%A9-1/episode-90511',
         'only_matching': True
+    }, {
+        'url': 'https://shahid.mbc.net/en/shows/Ramez-Fi-Al-Shallal-season-1-episode-1/episode-359319',
+        'only_matching': True
     }]
 
     def _real_initialize(self):
@@ -168,7 +172,7 @@ class ShahidIE(ShahidBaseIE):
 
 
 class ShahidShowIE(ShahidBaseIE):
-    _VALID_URL = r'https?://shahid\.mbc\.net/ar/(?:show|serie)s/[^/]+/(?:show|series)-(?P<id>\d+)'
+    _VALID_URL = ShahidBaseIE._VALID_URL_BASE + r'(?:show|serie)s/[^/]+/(?:show|series)-(?P<id>\d+)'
     _TESTS = [{
         'url': 'https://shahid.mbc.net/ar/shows/%D8%B1%D8%A7%D9%85%D8%B2-%D9%82%D8%B1%D8%B4-%D8%A7%D9%84%D8%A8%D8%AD%D8%B1/show-79187',
         'info_dict': {
diff --git a/youtube_dl/extractor/shared.py b/youtube_dl/extractor/shared.py
index 02295d1a4..93ab2a167 100644
--- a/youtube_dl/extractor/shared.py
+++ b/youtube_dl/extractor/shared.py
@@ -86,10 +86,10 @@ class SharedIE(SharedBaseIE):
 
 class VivoIE(SharedBaseIE):
     IE_DESC = 'vivo.sx'
-    _VALID_URL = r'https?://vivo\.sx/(?P<id>[\da-z]{10})'
+    _VALID_URL = r'https?://vivo\.s[xt]/(?P<id>[\da-z]{10})'
     _FILE_NOT_FOUND = '>The file you have requested does not exists or has been removed'
 
-    _TEST = {
+    _TESTS = [{
         'url': 'http://vivo.sx/d7ddda0e78',
         'md5': '15b3af41be0b4fe01f4df075c2678b2c',
         'info_dict': {
@@ -98,7 +98,10 @@ class VivoIE(SharedBaseIE):
             'title': 'Chicken',
             'filesize': 515659,
         },
-    }
+    }, {
+        'url': 'http://vivo.st/d7ddda0e78',
+        'only_matching': True,
+    }]
 
     def _extract_title(self, webpage):
         title = self._html_search_regex(
diff --git a/youtube_dl/extractor/ted.py b/youtube_dl/extractor/ted.py
index 63e2455b2..f09f1a3f9 100644
--- a/youtube_dl/extractor/ted.py
+++ b/youtube_dl/extractor/ted.py
@@ -123,6 +123,10 @@ class TEDIE(InfoExtractor):
         'params': {
             'skip_download': True,
         },
+    }, {
+        # with own formats and private Youtube external
+        'url': 'https://www.ted.com/talks/spencer_wells_a_family_tree_for_humanity',
+        'only_matching': True,
     }]
 
     _NATIVE_FORMATS = {
@@ -210,16 +214,6 @@ class TEDIE(InfoExtractor):
 
         player_talk = talk_info['player_talks'][0]
 
-        external = player_talk.get('external')
-        if isinstance(external, dict):
-            service = external.get('service')
-            if isinstance(service, compat_str):
-                ext_url = None
-                if service.lower() == 'youtube':
-                    ext_url = external.get('code')
-
-                return self.url_result(ext_url or external['uri'])
-
         resources_ = player_talk.get('resources') or talk_info.get('resources')
 
         http_url = None
@@ -294,6 +288,16 @@ class TEDIE(InfoExtractor):
                 'vcodec': 'none',
             })
 
+        if not formats:
+            external = player_talk.get('external')
+            if isinstance(external, dict):
+                service = external.get('service')
+                if isinstance(service, compat_str):
+                    ext_url = None
+                    if service.lower() == 'youtube':
+                        ext_url = external.get('code')
+                    return self.url_result(ext_url or external['uri'])
+
         self._sort_formats(formats)
 
         video_id = compat_str(talk_info['id'])
diff --git a/youtube_dl/extractor/twitch.py b/youtube_dl/extractor/twitch.py
index a7867f4d3..a378bd6dc 100644
--- a/youtube_dl/extractor/twitch.py
+++ b/youtube_dl/extractor/twitch.py
@@ -49,6 +49,7 @@ class TwitchBaseIE(InfoExtractor):
         'ChannelCollectionsContent': '07e3691a1bad77a36aba590c351180439a40baefc1c275356f40fc7082419a84',
         'StreamMetadata': '1c719a40e481453e5c48d9bb585d971b8b372f8ebb105b17076722264dfa5b3e',
         'ComscoreStreamingQuery': 'e1edae8122517d013405f237ffcc124515dc6ded82480a88daef69c83b53ac01',
+        'VideoAccessToken_Clip': '36b89d2507fce29e5ca551df756d27c1cfe079e2609642b4390aa4c35796eb11',
         'VideoPreviewOverlay': '3006e77e51b128d838fa4e835723ca4dc9a05c5efd4466c1085215c6e437e65c',
         'VideoMetadata': '226edb3e692509f727fd56821f5653c05740242c82b0388883e0c0e75dcbf687',
     }
@@ -893,7 +894,25 @@ class TwitchClipsIE(TwitchBaseIE):
     def _real_extract(self, url):
         video_id = self._match_id(url)
 
-        clip = self._download_base_gql(
+        clip = self._download_gql(
+            video_id, [{
+                'operationName': 'VideoAccessToken_Clip',
+                'variables': {
+                    'slug': video_id,
+                },
+            }],
+            'Downloading clip access token GraphQL')[0]['data']['clip']
+
+        if not clip:
+            raise ExtractorError(
+                'This clip is no longer available', expected=True)
+
+        access_query = {
+            'sig': clip['playbackAccessToken']['signature'],
+            'token': clip['playbackAccessToken']['value'],
+        }
+
+        data = self._download_base_gql(
             video_id, {
                 'query': '''{
   clip(slug: "%s") {
@@ -918,11 +937,10 @@ class TwitchClipsIE(TwitchBaseIE):
     }
     viewCount
   }
-}''' % video_id}, 'Downloading clip GraphQL')['data']['clip']
+}''' % video_id}, 'Downloading clip GraphQL', fatal=False)
 
-        if not clip:
-            raise ExtractorError(
-                'This clip is no longer available', expected=True)
+        if data:
+            clip = try_get(data, lambda x: x['data']['clip'], dict) or clip
 
         formats = []
         for option in clip.get('videoQualities', []):
@@ -932,7 +950,7 @@ class TwitchClipsIE(TwitchBaseIE):
             if not source:
                 continue
             formats.append({
-                'url': source,
+                'url': update_url_query(source, access_query),
                 'format_id': option.get('quality'),
                 'height': int_or_none(option.get('quality')),
                 'fps': int_or_none(option.get('frameRate')),
diff --git a/youtube_dl/extractor/umg.py b/youtube_dl/extractor/umg.py
index d815cd9a6..47948b6ce 100644
--- a/youtube_dl/extractor/umg.py
+++ b/youtube_dl/extractor/umg.py
@@ -28,7 +28,7 @@ class UMGDeIE(InfoExtractor):
     def _real_extract(self, url):
         video_id = self._match_id(url)
         video_data = self._download_json(
-            'https://api.universal-music.de/graphql',
+            'https://graphql.universal-music.de/',
             video_id, query={
                 'query': '''{
   universalMusic(channel:16) {
@@ -56,11 +56,9 @@ class UMGDeIE(InfoExtractor):
         formats = []
 
         def add_m3u8_format(format_id):
-            m3u8_formats = self._extract_m3u8_formats(
+            formats.extend(self._extract_m3u8_formats(
                 hls_url_template % format_id, video_id, 'mp4',
-                'm3u8_native', m3u8_id='hls', fatal='False')
-            if m3u8_formats and m3u8_formats[0].get('height'):
-                formats.extend(m3u8_formats)
+                'm3u8_native', m3u8_id='hls', fatal=False))
 
         for f in video_data.get('formats', []):
             f_url = f.get('url')
diff --git a/youtube_dl/extractor/ustream.py b/youtube_dl/extractor/ustream.py
index 9e860aeb7..1e29cbe22 100644
--- a/youtube_dl/extractor/ustream.py
+++ b/youtube_dl/extractor/ustream.py
@@ -75,7 +75,7 @@ class UstreamIE(InfoExtractor):
     @staticmethod
     def _extract_url(webpage):
         mobj = re.search(
-            r'<iframe[^>]+?src=(["\'])(?P<url>http://(?:www\.)?(?:ustream\.tv|video\.ibm\.com)/embed/.+?)\1', webpage)
+            r'<iframe[^>]+?src=(["\'])(?P<url>https?://(?:www\.)?(?:ustream\.tv|video\.ibm\.com)/embed/.+?)\1', webpage)
         if mobj is not None:
             return mobj.group('url')
 
diff --git a/youtube_dl/extractor/vimeo.py b/youtube_dl/extractor/vimeo.py
index 102687b82..0b386f450 100644
--- a/youtube_dl/extractor/vimeo.py
+++ b/youtube_dl/extractor/vimeo.py
@@ -647,7 +647,7 @@ class VimeoIE(VimeoBaseInfoExtractor):
                         expected=True)
             raise
 
-        if '://player.vimeo.com/video/' in url:
+        if '//player.vimeo.com/video/' in url:
             config = self._parse_json(self._search_regex(
                 r'\bconfig\s*=\s*({.+?})\s*;', webpage, 'info section'), video_id)
             if config.get('view') == 4:
diff --git a/youtube_dl/extractor/vk.py b/youtube_dl/extractor/vk.py
index 00ec006c4..6b3513ee0 100644
--- a/youtube_dl/extractor/vk.py
+++ b/youtube_dl/extractor/vk.py
@@ -300,6 +300,13 @@ class VKIE(VKBaseIE):
             'only_matching': True,
         }]
 
+    @staticmethod
+    def _extract_sibnet_urls(webpage):
+        # https://help.sibnet.ru/?sibnet_video_embed
+        return [unescapeHTML(mobj.group('url')) for mobj in re.finditer(
+            r'<iframe\b[^>]+\bsrc=(["\'])(?P<url>(?:https?:)?//video\.sibnet\.ru/shell\.php\?.*?\bvideoid=\d+.*?)\1',
+            webpage)]
+
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
         video_id = mobj.group('videoid')
@@ -408,6 +415,10 @@ class VKIE(VKBaseIE):
         if odnoklassniki_url:
             return self.url_result(odnoklassniki_url, OdnoklassnikiIE.ie_key())
 
+        sibnet_urls = self._extract_sibnet_urls(info_page)
+        if sibnet_urls:
+            return self.url_result(sibnet_urls[0])
+
         m_opts = re.search(r'(?s)var\s+opts\s*=\s*({.+?});', info_page)
         if m_opts:
             m_opts_url = re.search(r"url\s*:\s*'((?!/\b)[^']+)", m_opts.group(1))
diff --git a/youtube_dl/extractor/youporn.py b/youtube_dl/extractor/youporn.py
index 33114363d..7084d3d12 100644
--- a/youtube_dl/extractor/youporn.py
+++ b/youtube_dl/extractor/youporn.py
@@ -4,13 +4,12 @@ import re
 
 from .common import InfoExtractor
 from ..utils import (
+    extract_attributes,
     int_or_none,
     str_to_int,
-    unescapeHTML,
     unified_strdate,
     url_or_none,
 )
-from ..aes import aes_decrypt_text
 
 
 class YouPornIE(InfoExtractor):
@@ -34,6 +33,7 @@ class YouPornIE(InfoExtractor):
             'tags': list,
             'age_limit': 18,
         },
+        'skip': 'This video has been disabled',
     }, {
         # Unknown uploader
         'url': 'http://www.youporn.com/watch/561726/big-tits-awesome-brunette-on-amazing-webcam-show/?from=related3&al=2&from_id=561726&pos=4',
@@ -78,6 +78,40 @@ class YouPornIE(InfoExtractor):
         video_id = mobj.group('id')
         display_id = mobj.group('display_id') or video_id
 
+        definitions = self._download_json(
+            'https://www.youporn.com/api/video/media_definitions/%s/' % video_id,
+            display_id)
+
+        formats = []
+        for definition in definitions:
+            if not isinstance(definition, dict):
+                continue
+            video_url = url_or_none(definition.get('videoUrl'))
+            if not video_url:
+                continue
+            f = {
+                'url': video_url,
+                'filesize': int_or_none(definition.get('videoSize')),
+            }
+            height = int_or_none(definition.get('quality'))
+            # Video URL's path looks like this:
+            #  /201012/17/505835/720p_1500k_505835/YouPorn%20-%20Sex%20Ed%20Is%20It%20Safe%20To%20Masturbate%20Daily.mp4
+            #  /201012/17/505835/vl_240p_240k_505835/YouPorn%20-%20Sex%20Ed%20Is%20It%20Safe%20To%20Masturbate%20Daily.mp4
+            #  /videos/201703/11/109285532/1080P_4000K_109285532.mp4
+            # We will benefit from it by extracting some metadata
+            mobj = re.search(r'(?P<height>\d{3,4})[pP]_(?P<bitrate>\d+)[kK]_\d+', video_url)
+            if mobj:
+                if not height:
+                    height = int(mobj.group('height'))
+                bitrate = int(mobj.group('bitrate'))
+                f.update({
+                    'format_id': '%dp-%dk' % (height, bitrate),
+                    'tbr': bitrate,
+                })
+            f['height'] = height
+            formats.append(f)
+        self._sort_formats(formats)
+
         webpage = self._download_webpage(
             'http://www.youporn.com/watch/%s' % video_id, display_id,
             headers={'Cookie': 'age_verified=1'})
@@ -88,65 +122,6 @@ class YouPornIE(InfoExtractor):
             webpage, default=None) or self._html_search_meta(
             'title', webpage, fatal=True)
 
-        links = []
-
-        # Main source
-        definitions = self._parse_json(
-            self._search_regex(
-                r'mediaDefinition\s*[=:]\s*(\[.+?\])\s*[;,]', webpage,
-                'media definitions', default='[]'),
-            video_id, fatal=False)
-        if definitions:
-            for definition in definitions:
-                if not isinstance(definition, dict):
-                    continue
-                video_url = url_or_none(definition.get('videoUrl'))
-                if video_url:
-                    links.append(video_url)
-
-        # Fallback #1, this also contains extra low quality 180p format
-        for _, link in re.findall(r'<a[^>]+href=(["\'])(http(?:(?!\1).)+\.mp4(?:(?!\1).)*)\1[^>]+title=["\']Download [Vv]ideo', webpage):
-            links.append(link)
-
-        # Fallback #2 (unavailable as at 22.06.2017)
-        sources = self._search_regex(
-            r'(?s)sources\s*:\s*({.+?})', webpage, 'sources', default=None)
-        if sources:
-            for _, link in re.findall(r'[^:]+\s*:\s*(["\'])(http.+?)\1', sources):
-                links.append(link)
-
-        # Fallback #3 (unavailable as at 22.06.2017)
-        for _, link in re.findall(
-                r'(?:videoSrc|videoIpadUrl|html5PlayerSrc)\s*[:=]\s*(["\'])(http.+?)\1', webpage):
-            links.append(link)
-
-        # Fallback #4, encrypted links (unavailable as at 22.06.2017)
-        for _, encrypted_link in re.findall(
-                r'encryptedQuality\d{3,4}URL\s*=\s*(["\'])([\da-zA-Z+/=]+)\1', webpage):
-            links.append(aes_decrypt_text(encrypted_link, title, 32).decode('utf-8'))
-
-        formats = []
-        for video_url in set(unescapeHTML(link) for link in links):
-            f = {
-                'url': video_url,
-            }
-            # Video URL's path looks like this:
-            #  /201012/17/505835/720p_1500k_505835/YouPorn%20-%20Sex%20Ed%20Is%20It%20Safe%20To%20Masturbate%20Daily.mp4
-            #  /201012/17/505835/vl_240p_240k_505835/YouPorn%20-%20Sex%20Ed%20Is%20It%20Safe%20To%20Masturbate%20Daily.mp4
-            #  /videos/201703/11/109285532/1080P_4000K_109285532.mp4
-            # We will benefit from it by extracting some metadata
-            mobj = re.search(r'(?P<height>\d{3,4})[pP]_(?P<bitrate>\d+)[kK]_\d+', video_url)
-            if mobj:
-                height = int(mobj.group('height'))
-                bitrate = int(mobj.group('bitrate'))
-                f.update({
-                    'format_id': '%dp-%dk' % (height, bitrate),
-                    'height': height,
-                    'tbr': bitrate,
-                })
-            formats.append(f)
-        self._sort_formats(formats)
-
         description = self._html_search_regex(
             r'(?s)<div[^>]+\bid=["\']description["\'][^>]*>(.+?)</div>',
             webpage, 'description',
@@ -169,13 +144,12 @@ class YouPornIE(InfoExtractor):
 
         age_limit = self._rta_search(webpage)
 
-        average_rating = int_or_none(self._search_regex(
-            r'<div[^>]+class=["\']videoRatingPercentage["\'][^>]*>(\d+)%</div>',
-            webpage, 'average rating', fatal=False))
-
-        view_count = str_to_int(self._search_regex(
-            r'(?s)<div[^>]+class=(["\']).*?\bvideoInfoViews\b.*?\1[^>]*>.*?(?P<count>[\d,.]+)<',
-            webpage, 'view count', fatal=False, group='count'))
+        view_count = None
+        views = self._search_regex(
+            r'(<div[^>]+\bclass=["\']js_videoInfoViews["\']>)', webpage,
+            'views', default=None)
+        if views:
+            view_count = str_to_int(extract_attributes(views).get('data-value'))
         comment_count = str_to_int(self._search_regex(
             r'>All [Cc]omments? \(([\d,.]+)\)',
             webpage, 'comment count', default=None))
@@ -201,7 +175,6 @@ class YouPornIE(InfoExtractor):
             'duration': duration,
             'uploader': uploader,
             'upload_date': upload_date,
-            'average_rating': average_rating,
             'view_count': view_count,
             'comment_count': comment_count,
             'categories': categories,
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 0c52e5a8b..dc4bd4a77 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -353,7 +353,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         r'(?:www\.)?invidious\.13ad\.de',
         r'(?:www\.)?invidious\.mastodon\.host',
         r'(?:www\.)?invidious\.zapashcanon\.fr',
-        r'(?:www\.)?invidious\.kavin\.rocks',
+        r'(?:www\.)?(?:invidious(?:-us)?|piped)\.kavin\.rocks',
         r'(?:www\.)?invidious\.tinfoil-hat\.net',
         r'(?:www\.)?invidious\.himiko\.cloud',
         r'(?:www\.)?invidious\.reallyancient\.tech',
@@ -380,6 +380,14 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         r'(?:www\.)?invidious\.toot\.koeln',
         r'(?:www\.)?invidious\.fdn\.fr',
         r'(?:www\.)?watch\.nettohikari\.com',
+        r'(?:www\.)?invidious\.namazso\.eu',
+        r'(?:www\.)?invidious\.silkky\.cloud',
+        r'(?:www\.)?invidious\.exonip\.de',
+        r'(?:www\.)?invidious\.riverside\.rocks',
+        r'(?:www\.)?invidious\.blamefran\.net',
+        r'(?:www\.)?invidious\.moomoo\.de',
+        r'(?:www\.)?ytb\.trom\.tf',
+        r'(?:www\.)?yt\.cyberhost\.uk',
         r'(?:www\.)?kgg2m7yk5aybusll\.onion',
         r'(?:www\.)?qklhadlycap4cnod\.onion',
         r'(?:www\.)?axqzx4s6s54s32yentfqojs3x5i7faxza6xo3ehd4bzzsg2ii4fv2iid\.onion',
@@ -388,6 +396,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         r'(?:www\.)?invidious\.l4qlywnpwqsluw65ts7md3khrivpirse744un3x7mlskqauz5pyuzgqd\.onion',
         r'(?:www\.)?owxfohz4kjyv25fvlqilyxast7inivgiktls3th44jhk3ej3i7ya\.b32\.i2p',
         r'(?:www\.)?4l2dgddgsrkf2ous66i6seeyi6etzfgrue332grh2n7madpwopotugyd\.onion',
+        r'(?:www\.)?w6ijuptxiku4xpnnaetxvnkc5vqcdu7mgns2u77qefoixi63vbvnpnqd\.onion',
+        r'(?:www\.)?kbjggqkzv65ivcqj6bumvp337z6264huv5kpkwuv6gu5yjiskvan7fad\.onion',
+        r'(?:www\.)?grwp24hodrefzvjjuccrkw3mjq4tzhaaq32amf33dzpmuxe7ilepcmad\.onion',
+        r'(?:www\.)?hpniueoejy4opn7bc4ftgazyqjoeqwlvh2uiku2xqku6zpoa4bf5ruid\.onion',
     )
     _VALID_URL = r"""(?x)^
                      (
@@ -1492,18 +1504,25 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
         playability_status = player_response.get('playabilityStatus') or {}
         if playability_status.get('reason') == 'Sign in to confirm your age':
-            pr = self._parse_json(try_get(compat_parse_qs(
-                self._download_webpage(
-                    base_url + 'get_video_info', video_id,
-                    'Refetching age-gated info webpage',
-                    'unable to download video info webpage', query={
-                        'video_id': video_id,
-                        'eurl': 'https://youtube.googleapis.com/v/' + video_id,
-                    }, fatal=False)),
-                lambda x: x['player_response'][0],
-                compat_str) or '{}', video_id)
-            if pr:
-                player_response = pr
+            video_info = self._download_webpage(
+                base_url + 'get_video_info', video_id,
+                'Refetching age-gated info webpage',
+                'unable to download video info webpage', query={
+                    'video_id': video_id,
+                    'eurl': 'https://youtube.googleapis.com/v/' + video_id,
+                    'html5': 1,
+                    # See https://github.com/ytdl-org/youtube-dl/issues/29333#issuecomment-864049544
+                    'c': 'TVHTML5',
+                    'cver': '6.20180913',
+                }, fatal=False)
+            if video_info:
+                pr = self._parse_json(
+                    try_get(
+                        compat_parse_qs(video_info),
+                        lambda x: x['player_response'][0], compat_str) or '{}',
+                    video_id, fatal=False)
+                if pr and isinstance(pr, dict):
+                    player_response = pr
 
         trailer_video_id = try_get(
             playability_status,
diff --git a/youtube_dl/options.py b/youtube_dl/options.py
index 241cf110f..0a0641bd4 100644
--- a/youtube_dl/options.py
+++ b/youtube_dl/options.py
@@ -768,7 +768,7 @@ def parseOpts(overrideArguments=None):
         action='store_true', dest='rm_cachedir',
         help='Delete all filesystem cache files')
 
-    thumbnail = optparse.OptionGroup(parser, 'Thumbnail images')
+    thumbnail = optparse.OptionGroup(parser, 'Thumbnail Options')
     thumbnail.add_option(
         '--write-thumbnail',
         action='store_true', dest='writethumbnail', default=False,
diff --git a/youtube_dl/postprocessor/ffmpeg.py b/youtube_dl/postprocessor/ffmpeg.py
index 5f7298345..9f76c9d4e 100644
--- a/youtube_dl/postprocessor/ffmpeg.py
+++ b/youtube_dl/postprocessor/ffmpeg.py
@@ -231,7 +231,10 @@ class FFmpegPostProcessor(PostProcessor):
         stdout, stderr = p.communicate()
         if p.returncode != 0:
             stderr = stderr.decode('utf-8', 'replace')
-            msg = stderr.strip().split('\n')[-1]
+            msgs = stderr.strip().split('\n')
+            msg = msgs[-1]
+            if self._downloader.params.get('verbose', False):
+                self._downloader.to_screen('[debug] ' + '\n'.join(msgs[:-1]))
             raise FFmpegPostProcessorError(msg)
         self.try_utime(out_path, oldest_mtime, oldest_mtime)
 
diff --git a/youtube_dl/version.py b/youtube_dl/version.py
index 576f721db..461dd87ca 100644
--- a/youtube_dl/version.py
+++ b/youtube_dl/version.py
@@ -1,3 +1,3 @@
 from __future__ import unicode_literals
 
-__version__ = '2021.04.26'
+__version__ = '2021.06.06'