diff --git a/.github/pull.yml b/.github/pull.yml
new file mode 100644
index 000000000..cb259a99c
--- /dev/null
+++ b/.github/pull.yml
@@ -0,0 +1,8 @@
+version: "1"
+rules:
+  - base: master
+    upstream: ytdl-org:master
+    mergeMethod: merge
+    reviewers:
+      - aviperes
+      - hashark
diff --git a/test/test_utils.py b/test/test_utils.py
index 71980b3fc..659c6ece5 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -822,6 +822,15 @@ class TestUtil(unittest.TestCase):
             'vcodec': 'av01.0.05M.08',
             'acodec': 'none',
         })
+        self.assertEqual(parse_codecs('theora, vorbis'), {
+            'vcodec': 'theora',
+            'acodec': 'vorbis',
+        })
+        self.assertEqual(parse_codecs('unknownvcodec, unknownacodec'), {
+            'vcodec': 'unknownvcodec',
+            'acodec': 'unknownacodec',
+        })
+        self.assertEqual(parse_codecs('unknown'), {})
 
     def test_escape_rfc3986(self):
         reserved = "!*'();:@&=+$,/?#[]"
diff --git a/youtube_dl/extractor/biqle.py b/youtube_dl/extractor/biqle.py
index 3707dc97f..af21e3ee5 100644
--- a/youtube_dl/extractor/biqle.py
+++ b/youtube_dl/extractor/biqle.py
@@ -42,7 +42,7 @@ class BIQLEIE(InfoExtractor):
         video_id = self._match_id(url)
         webpage = self._download_webpage(url, video_id)
         embed_url = self._proto_relative_url(self._search_regex(
-            r'<iframe.+?src="((?:https?:)?//daxab\.com/[^"]+)".*?></iframe>',
+            r'<iframe.+?src="((?:https?:)?//(?:daxab\.com|dxb\.to|[^/]+/player)/[^"]+)".*?></iframe>',
             webpage, 'embed url'))
         if VKIE.suitable(embed_url):
             return self.url_result(embed_url, VKIE.ie_key(), video_id)
diff --git a/youtube_dl/extractor/odnoklassniki.py b/youtube_dl/extractor/odnoklassniki.py
index 1eb3bdd2f..f177e4eb4 100644
--- a/youtube_dl/extractor/odnoklassniki.py
+++ b/youtube_dl/extractor/odnoklassniki.py
@@ -96,14 +96,14 @@ class OdnoklassnikiIE(InfoExtractor):
         'skip': 'Video has not been found',
     }, {
         # live video
-        'url': 'https://www.ok.ru/video/1050794925929',
+        'url': 'https://www.ok.ru/live/1385317932687',
         'info_dict': {
-            'id': '1050794925929',
-            'title': 're:^Поиск репертуара [0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}$',
+            'id': u'1385317932687',
+            'title': u're:АНДРЕЙ МАЛАХОВ. ПРЯМОЙ ЭФИР [0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}$',
             'ext': 'mp4',
-            'upload_date': u'20190428',
-            'uploader': u'(((((КнЯзЬ ))))',
-            'uploader_id': u'557343776873',
+            'upload_date': u'20190603',
+            'uploader': u'Светлана Соколенко',
+            'uploader_id': u'575511609483',
             'is_live': True
         },
         'params': {
@@ -259,7 +259,7 @@ class OdnoklassnikiIE(InfoExtractor):
             return info
 
         assert title
-        if provider == 'LIVE_TV_APP':
+        if 'LIVE_TV' in provider:
             info['title'] = self._live_title(title)
             info['is_live'] = True
 
diff --git a/youtube_dl/extractor/sixplay.py b/youtube_dl/extractor/sixplay.py
index 2a72af11b..7ec66ecf3 100644
--- a/youtube_dl/extractor/sixplay.py
+++ b/youtube_dl/extractor/sixplay.py
@@ -19,7 +19,7 @@ from ..utils import (
 
 class SixPlayIE(InfoExtractor):
     IE_NAME = '6play'
-    _VALID_URL = r'(?:6play:|https?://(?:www\.)?(?P<domain>6play\.fr|rtlplay\.be|play\.rtl\.hr)/.+?-c_)(?P<id>[0-9]+)'
+    _VALID_URL = r'(?:6play:|https?://(?:www\.)?(?P<domain>6play\.fr|rtlplay\.be|play\.rtl\.hr|rtlmost\.hu)/.+?-c_)(?P<id>[0-9]+)'
     _TESTS = [{
         'url': 'https://www.6play.fr/minute-par-minute-p_9533/le-but-qui-a-marque-lhistoire-du-football-francais-c_12041051',
         'md5': '31fcd112637baa0c2ab92c4fcd8baf27',
@@ -35,6 +35,9 @@ class SixPlayIE(InfoExtractor):
     }, {
         'url': 'https://play.rtl.hr/pj-masks-p_9455/epizoda-34-sezona-1-catboyevo-cudo-na-dva-kotaca-c_11984989',
         'only_matching': True,
+    }, {
+        'url': 'https://www.rtlmost.hu/megtorve-p_14167/megtorve-6-resz-c_12397787',
+        'only_matching': True,
     }]
 
     def _real_extract(self, url):
@@ -43,6 +46,7 @@ class SixPlayIE(InfoExtractor):
             '6play.fr': ('6play', 'm6web'),
             'rtlplay.be': ('rtlbe_rtl_play', 'rtlbe'),
             'play.rtl.hr': ('rtlhr_rtl_play', 'rtlhr'),
+            'rtlmost.hu': ('rtlhu_rtl_most', 'rtlhu'),
         }.get(domain, ('6play', 'm6web'))
 
         data = self._download_json(
diff --git a/youtube_dl/extractor/toutv.py b/youtube_dl/extractor/toutv.py
index 00f58a087..44b022fca 100644
--- a/youtube_dl/extractor/toutv.py
+++ b/youtube_dl/extractor/toutv.py
@@ -38,7 +38,7 @@ class TouTvIE(RadioCanadaIE):
         'url': 'https://ici.tou.tv/l-age-adulte/S01C501',
         'only_matching': True,
     }]
-    _CLIENT_KEY = '4dd36440-09d5-4468-8923-b6d91174ad36'
+    _CLIENT_KEY = '90505c8d-9c34-4f34-8da1-3a85bdc6d4f4'
 
     def _real_initialize(self):
         email, password = self._get_login_info()
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 963c73a2d..1010c8616 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -500,6 +500,12 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
         # RTMP (unnamed)
         '_rtmp': {'protocol': 'rtmp'},
+
+        # av01 video only formats sometimes served with "unknown" codecs
+        '394': {'acodec': 'none', 'vcodec': 'av01.0.05M.08'},
+        '395': {'acodec': 'none', 'vcodec': 'av01.0.05M.08'},
+        '396': {'acodec': 'none', 'vcodec': 'av01.0.05M.08'},
+        '397': {'acodec': 'none', 'vcodec': 'av01.0.05M.08'},
     }
     _SUBTITLE_FORMATS = ('srv1', 'srv2', 'srv3', 'ttml', 'vtt')
 
@@ -1575,8 +1581,15 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         return video_id
 
     def _extract_annotations(self, video_id):
-        url = 'https://www.youtube.com/annotations_invideo?features=1&legacy=1&video_id=%s' % video_id
-        return self._download_webpage(url, video_id, note='Searching for annotations.', errnote='Unable to download video annotations.')
+        return self._download_webpage(
+            'https://www.youtube.com/annotations_invideo', video_id,
+            note='Downloading annotations',
+            errnote='Unable to download video annotations', fatal=False,
+            query={
+                'features': 1,
+                'legacy': 1,
+                'video_id': video_id,
+            })
 
     @staticmethod
     def _extract_chapters(description, duration):
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index ead9bd862..a1f586b80 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -2529,7 +2529,7 @@ def parse_codecs(codecs_str):
     vcodec, acodec = None, None
     for full_codec in splited_codecs:
         codec = full_codec.split('.')[0]
-        if codec in ('avc1', 'avc2', 'avc3', 'avc4', 'vp9', 'vp8', 'hev1', 'hev2', 'h263', 'h264', 'mp4v', 'hvc1', 'av01'):
+        if codec in ('avc1', 'avc2', 'avc3', 'avc4', 'vp9', 'vp8', 'hev1', 'hev2', 'h263', 'h264', 'mp4v', 'hvc1', 'av01', 'theora'):
             if not vcodec:
                 vcodec = full_codec
         elif codec in ('mp4a', 'opus', 'vorbis', 'mp3', 'aac', 'ac-3', 'ec-3', 'eac3', 'dtsc', 'dtse', 'dtsh', 'dtsl'):
@@ -2540,13 +2540,8 @@ def parse_codecs(codecs_str):
     if not vcodec and not acodec:
         if len(splited_codecs) == 2:
             return {
-                'vcodec': vcodec,
-                'acodec': acodec,
-            }
-        elif len(splited_codecs) == 1:
-            return {
-                'vcodec': 'none',
-                'acodec': vcodec,
+                'vcodec': splited_codecs[0],
+                'acodec': splited_codecs[1],
             }
     else:
         return {