diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index 9c3e9eec6..859786617 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -220,7 +220,7 @@ class InfoExtractor(object):
                         * "preference" (optional, int) - quality of the image
                         * "width" (optional, int)
                         * "height" (optional, int)
-                        * "resolution" (optional, string "{width}x{height"},
+                        * "resolution" (optional, string "{width}x{height}",
                                         deprecated)
                         * "filesize" (optional, int)
     thumbnail:      Full URL to a video thumbnail image.
diff --git a/youtube_dl/extractor/ctsnews.py b/youtube_dl/extractor/ctsnews.py
index dcda7e89d..679f1d92e 100644
--- a/youtube_dl/extractor/ctsnews.py
+++ b/youtube_dl/extractor/ctsnews.py
@@ -5,6 +5,7 @@ from .common import InfoExtractor
 from ..utils import unified_timestamp
 from .youtube import YoutubeIE
 
+
 class CtsNewsIE(InfoExtractor):
     IE_DESC = '華視新聞'
     _VALID_URL = r'https?://news\.cts\.com\.tw/[a-z]+/[a-z]+/\d+/(?P<id>\d+)\.html'
diff --git a/youtube_dl/extractor/discovery.py b/youtube_dl/extractor/discovery.py
index b70c307a7..9003545ce 100644
--- a/youtube_dl/extractor/discovery.py
+++ b/youtube_dl/extractor/discovery.py
@@ -19,9 +19,9 @@ from ..compat import compat_HTTPError
 class DiscoveryIE(DiscoveryGoBaseIE):
     _VALID_URL = r'''(?x)https?://
         (?P<site>
+            (?:(?:www|go)\.)?discovery|
             (?:www\.)?
                 (?:
-                    discovery|
                     investigationdiscovery|
                     discoverylife|
                     animalplanet|
@@ -56,6 +56,9 @@ class DiscoveryIE(DiscoveryGoBaseIE):
     }, {
         'url': 'https://www.investigationdiscovery.com/tv-shows/final-vision/full-episodes/final-vision',
         'only_matching': True,
+    }, {
+        'url': 'https://go.discovery.com/tv-shows/alaskan-bush-people/videos/follow-your-own-road',
+        'only_matching': True,
     }]
     _GEO_COUNTRIES = ['US']
     _GEO_BYPASS = False
diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py
index a478f01ec..7ac37af9d 100644
--- a/youtube_dl/extractor/extractors.py
+++ b/youtube_dl/extractor/extractors.py
@@ -1449,6 +1449,7 @@ from .yahoo import (
     YahooSearchIE,
     YahooGyaOPlayerIE,
     YahooGyaOIE,
+    YahooJapanNewsIE,
 )
 from .yandexdisk import YandexDiskIE
 from .yandexmusic import (
diff --git a/youtube_dl/extractor/generic.py b/youtube_dl/extractor/generic.py
index 77e217460..d34fc4b15 100644
--- a/youtube_dl/extractor/generic.py
+++ b/youtube_dl/extractor/generic.py
@@ -2226,7 +2226,7 @@ class GenericIE(InfoExtractor):
                 default_search = 'fixup_error'
 
             if default_search in ('auto', 'auto_warning', 'fixup_error'):
-                if '/' in url:
+                if re.match(r'^[^\s/]+\.[^\s/]+/', url):
                     self._downloader.report_warning('The url doesn\'t specify the protocol, trying with http')
                     return self.url_result('http://' + url)
                 elif default_search != 'fixup_error':
diff --git a/youtube_dl/extractor/yahoo.py b/youtube_dl/extractor/yahoo.py
index a3b5f00c8..e5ebdd180 100644
--- a/youtube_dl/extractor/yahoo.py
+++ b/youtube_dl/extractor/yahoo.py
@@ -1,12 +1,14 @@
 # coding: utf-8
 from __future__ import unicode_literals
 
+import hashlib
 import itertools
 import json
 import re
 
 from .common import InfoExtractor, SearchInfoExtractor
 from ..compat import (
+    compat_str,
     compat_urllib_parse,
     compat_urlparse,
 )
@@ -18,7 +20,9 @@ from ..utils import (
     int_or_none,
     mimetype2ext,
     smuggle_url,
+    try_get,
     unescapeHTML,
+    url_or_none,
 )
 
 from .brightcove import (
@@ -556,3 +560,130 @@ class YahooGyaOIE(InfoExtractor):
                 'https://gyao.yahoo.co.jp/player/%s/' % video_id.replace(':', '/'),
                 YahooGyaOPlayerIE.ie_key(), video_id))
         return self.playlist_result(entries, program_id)
+
+
+class YahooJapanNewsIE(InfoExtractor):
+    IE_NAME = 'yahoo:japannews'
+    IE_DESC = 'Yahoo! Japan News'
+    _VALID_URL = r'https?://(?P<host>(?:news|headlines)\.yahoo\.co\.jp)[^\d]*(?P<id>\d[\d-]*\d)?'
+    _GEO_COUNTRIES = ['JP']
+    _TESTS = [{
+        'url': 'https://headlines.yahoo.co.jp/videonews/ann?a=20190716-00000071-ann-int',
+        'info_dict': {
+            'id': '1736242',
+            'ext': 'mp4',
+            'title': 'ムン大統領が対日批判を強化“現金化”効果は？（テレビ朝日系（ANN）） - Yahoo!ニュース',
+            'description': '韓国の元徴用工らを巡る裁判の原告が弁護士が差し押さえた三菱重工業の資産を売却して - Yahoo!ニュース(テレビ朝日系（ANN）)',
+            'thumbnail': r're:^https?://.*\.[a-zA-Z\d]{3,4}$',
+        },
+        'params': {
+            'skip_download': True,
+        },
+    }, {
+        # geo restricted
+        'url': 'https://headlines.yahoo.co.jp/hl?a=20190721-00000001-oxv-l04',
+        'only_matching': True,
+    }, {
+        'url': 'https://headlines.yahoo.co.jp/videonews/',
+        'only_matching': True,
+    }, {
+        'url': 'https://news.yahoo.co.jp',
+        'only_matching': True,
+    }, {
+        'url': 'https://news.yahoo.co.jp/byline/hashimotojunji/20190628-00131977/',
+        'only_matching': True,
+    }, {
+        'url': 'https://news.yahoo.co.jp/feature/1356',
+        'only_matching': True
+    }]
+
+    def _extract_formats(self, json_data, content_id):
+        formats = []
+
+        video_data = try_get(
+            json_data,
+            lambda x: x['ResultSet']['Result'][0]['VideoUrlSet']['VideoUrl'],
+            list)
+        for vid in video_data or []:
+            delivery = vid.get('delivery')
+            url = url_or_none(vid.get('Url'))
+            if not delivery or not url:
+                continue
+            elif delivery == 'hls':
+                formats.extend(
+                    self._extract_m3u8_formats(
+                        url, content_id, 'mp4', 'm3u8_native',
+                        m3u8_id='hls', fatal=False))
+            else:
+                formats.append({
+                    'url': url,
+                    'format_id': 'http-%s' % compat_str(vid.get('bitrate', '')),
+                    'height': int_or_none(vid.get('height')),
+                    'width': int_or_none(vid.get('width')),
+                    'tbr': int_or_none(vid.get('bitrate')),
+                })
+        self._remove_duplicate_formats(formats)
+        self._sort_formats(formats)
+
+        return formats
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        host = mobj.group('host')
+        display_id = mobj.group('id') or host
+
+        webpage = self._download_webpage(url, display_id)
+
+        title = self._html_search_meta(
+            ['og:title', 'twitter:title'], webpage, 'title', default=None
+        ) or self._html_search_regex('<title>([^<]+)</title>', webpage, 'title')
+
+        if display_id == host:
+            # Headline page (w/ multiple BC playlists) ('news.yahoo.co.jp', 'headlines.yahoo.co.jp/videonews/', ...)
+            stream_plists = re.findall(r'plist=(\d+)', webpage) or re.findall(r'plist["\']:\s*["\']([^"\']+)', webpage)
+            entries = [
+                self.url_result(
+                    smuggle_url(
+                        'http://players.brightcove.net/5690807595001/HyZNerRl7_default/index.html?playlistId=%s' % plist_id,
+                        {'geo_countries': ['JP']}),
+                    ie='BrightcoveNew', video_id=plist_id)
+                for plist_id in stream_plists]
+            return self.playlist_result(entries, playlist_title=title)
+
+        # Article page
+        description = self._html_search_meta(
+            ['og:description', 'description', 'twitter:description'],
+            webpage, 'description', default=None)
+        thumbnail = self._og_search_thumbnail(
+            webpage, default=None) or self._html_search_meta(
+            'twitter:image', webpage, 'thumbnail', default=None)
+        space_id = self._search_regex([
+            r'<script[^>]+class=["\']yvpub-player["\'][^>]+spaceid=([^&"\']+)',
+            r'YAHOO\.JP\.srch\.\w+link\.onLoad[^;]+spaceID["\' ]*:["\' ]+([^"\']+)',
+            r'<!--\s+SpaceID=(\d+)'
+        ], webpage, 'spaceid')
+
+        content_id = self._search_regex(
+            r'<script[^>]+class=["\']yvpub-player["\'][^>]+contentid=(?P<contentid>[^&"\']+)',
+            webpage, 'contentid', group='contentid')
+
+        json_data = self._download_json(
+            'https://feapi-yvpub.yahooapis.jp/v1/content/%s' % content_id,
+            content_id,
+            query={
+                'appid': 'dj0zaiZpPVZMTVFJR0FwZWpiMyZzPWNvbnN1bWVyc2VjcmV0Jng9YjU-',
+                'output': 'json',
+                'space_id': space_id,
+                'domain': host,
+                'ak': hashlib.md5('_'.join((space_id, host)).encode()).hexdigest(),
+                'device_type': '1100',
+            })
+        formats = self._extract_formats(json_data, content_id)
+
+        return {
+            'id': content_id,
+            'title': title,
+            'description': description,
+            'thumbnail': thumbnail,
+            'formats': formats,
+        }
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index a87a46b3b..b2c714505 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -2432,7 +2432,7 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
                         (%(playlist_id)s)
                      )""" % {'playlist_id': YoutubeBaseInfoExtractor._PLAYLIST_ID_RE}
     _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+)(?:[^>]+>(?P<title>[^<]+))?'
+    _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',
@@ -2455,6 +2455,8 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
         'info_dict': {
             'title': '29C3: Not my department',
             'id': 'PLwP_SiAcdui0KVebT0mU9Apz359a4ubsC',
+            'uploader': 'Christiaan008',
+            'uploader_id': 'ChRiStIaAn008',
         },
         'playlist_count': 95,
     }, {
@@ -2463,6 +2465,8 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
         'info_dict': {
             'title': '[OLD]Team Fortress 2 (Class-based LP)',
             'id': 'PLBB231211A4F62143',
+            'uploader': 'Wickydoo',
+            'uploader_id': 'Wickydoo',
         },
         'playlist_mincount': 26,
     }, {
@@ -2471,6 +2475,8 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
         'info_dict': {
             'title': 'Uploads from Cauchemar',
             'id': 'UUBABnxM4Ar9ten8Mdjj1j0Q',
+            'uploader': 'Cauchemar',
+            'uploader_id': 'Cauchemar89',
         },
         'playlist_mincount': 799,
     }, {
@@ -2488,13 +2494,17 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
         'info_dict': {
             'title': 'JODA15',
             'id': 'PL6IaIsEjSbf96XFRuNccS_RuEXwNdsoEu',
+            'uploader': 'milan',
+            'uploader_id': 'UCEI1-PVPcYXjB73Hfelbmaw',
         }
     }, {
         'url': 'http://www.youtube.com/embed/_xDOZElKyNU?list=PLsyOSbh5bs16vubvKePAQ1x3PhKavfBIl',
         'playlist_mincount': 485,
         'info_dict': {
-            'title': '2017 華語最新單曲 (2/24更新)',
+            'title': '2018 Chinese New Singles (11/6 updated)',
             'id': 'PLsyOSbh5bs16vubvKePAQ1x3PhKavfBIl',
+            'uploader': 'LBK',
+            'uploader_id': 'sdragonfang',
         }
     }, {
         'note': 'Embedded SWF player',
@@ -2503,13 +2513,16 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
         'info_dict': {
             'title': 'JODA7',
             'id': 'YN5VISEtHet5D4NEvfTd0zcgFk84NqFZ',
-        }
+        },
+        'skip': 'This playlist does not exist',
     }, {
         'note': 'Buggy playlist: the webpage has a "Load more" button but it doesn\'t have more videos',
         'url': 'https://www.youtube.com/playlist?list=UUXw-G3eDE9trcvY2sBMM_aA',
         'info_dict': {
             'title': 'Uploads from Interstellar Movie',
             'id': 'UUXw-G3eDE9trcvY2sBMM_aA',
+            'uploader': 'Interstellar Movie',
+            'uploader_id': 'InterstellarMovie1',
         },
         'playlist_mincount': 21,
     }, {
@@ -2534,6 +2547,7 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
         'params': {
             'skip_download': True,
         },
+        'skip': 'This video is not available.',
         'add_ie': [YoutubeIE.ie_key()],
     }, {
         'url': 'https://youtu.be/yeWKywCrFtk?list=PL2qgrgXsNUG5ig9cat4ohreBjYLAPC0J5',
@@ -2545,7 +2559,6 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
             'uploader_id': 'backuspagemuseum',
             'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/backuspagemuseum',
             'upload_date': '20161008',
-            'license': 'Standard YouTube License',
             'description': 'md5:800c0c78d5eb128500bffd4f0b4f2e8a',
             'categories': ['Nonprofits & Activism'],
             'tags': list,
@@ -2556,6 +2569,16 @@ class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
             'noplaylist': True,
             'skip_download': True,
         },
+    }, {
+        # https://github.com/ytdl-org/youtube-dl/issues/21844
+        'url': 'https://www.youtube.com/playlist?list=PLzH6n4zXuckpfMu_4Ff8E7Z1behQks5ba',
+        'info_dict': {
+            'title': 'Data Analysis with Dr Mike Pound',
+            'id': 'PLzH6n4zXuckpfMu_4Ff8E7Z1behQks5ba',
+            'uploader_id': 'Computerphile',
+            'uploader': 'Computerphile',
+        },
+        'playlist_mincount': 11,
     }, {
         'url': 'https://youtu.be/uWyaPkt-VOI?list=PL9D9FC436B881BA21',
         'only_matching': True,
@@ -2722,6 +2745,8 @@ class YoutubeChannelIE(YoutubePlaylistBaseInfoExtractor):
         'info_dict': {
             'id': 'UUKfVa3S1e4PHvxWcwyMMg8w',
             'title': 'Uploads from lex will',
+            'uploader': 'lex will',
+            'uploader_id': 'UCKfVa3S1e4PHvxWcwyMMg8w',
         }
     }, {
         'note': 'Age restricted channel',
@@ -2731,6 +2756,8 @@ class YoutubeChannelIE(YoutubePlaylistBaseInfoExtractor):
         'info_dict': {
             'id': 'UUs0ifCMCm1icqRbqhUINa0w',
             'title': 'Uploads from Deus Ex',
+            'uploader': 'Deus Ex',
+            'uploader_id': 'DeusExOfficial',
         },
     }, {
         'url': 'https://invidio.us/channel/UC23qupoDRn9YOAVzeoxjOQA',
@@ -2815,6 +2842,8 @@ class YoutubeUserIE(YoutubeChannelIE):
         'info_dict': {
             'id': 'UUfX55Sx5hEFjoC3cNs6mCUQ',
             'title': 'Uploads from The Linux Foundation',
+            'uploader': 'The Linux Foundation',
+            'uploader_id': 'TheLinuxFoundation',
         }
     }, {
         # Only available via https://www.youtube.com/c/12minuteathlete/videos
@@ -2824,6 +2853,8 @@ class YoutubeUserIE(YoutubeChannelIE):
         'info_dict': {
             'id': 'UUVjM-zV6_opMDx7WYxnjZiQ',
             'title': 'Uploads from 12 Minute Athlete',
+            'uploader': '12 Minute Athlete',
+            'uploader_id': 'the12minuteathlete',
         }
     }, {
         'url': 'ytuser:phihag',
@@ -2917,7 +2948,7 @@ class YoutubePlaylistsIE(YoutubePlaylistsBaseInfoExtractor):
         'playlist_mincount': 4,
         'info_dict': {
             'id': 'ThirstForScience',
-            'title': 'Thirst for Science',
+            'title': 'ThirstForScience',
         },
     }, {
         # with "Load more" button
@@ -2934,6 +2965,7 @@ class YoutubePlaylistsIE(YoutubePlaylistsBaseInfoExtractor):
             'id': 'UCiU1dHvZObB2iP6xkJ__Icw',
             'title': 'Chem Player',
         },
+        'skip': 'Blocked',
     }]