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[youtube:tab] Redirect `UC` channels that doesn't have a `videos` tab 

Many topic URLs don't have a videos tab, but has an equivalent `UU` playlist.
If there is no playlist, fallback to using channel page
This commit is contained in:
pukkandan 2021-05-18 18:32:46 +05:30
parent fe03a6cdc8
commit 18db754858
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1 changed files with 53 additions and 0 deletions
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53
yt_dlp/extractor/youtube.py
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@ -2899,6 +2899,33 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
'title': 'NCS Releases',
},
'playlist_mincount': 166,
}, {
'note': 'Topic, should redirect to playlist?list=UU...',
'url': 'https://music.youtube.com/browse/UC9ALqqC4aIeG5iDs7i90Bfw',
'info_dict': {
'id': 'UU9ALqqC4aIeG5iDs7i90Bfw',
'uploader_id': 'UC9ALqqC4aIeG5iDs7i90Bfw',
'title': 'Uploads from Royalty Free Music - Topic',
'uploader': 'Royalty Free Music - Topic',
},
'expected_warnings': [
'A channel/user page was given',
'The URL does not have a videos tab',
],
'playlist_mincount': 101,
}, {
'note': 'Topic without a UU playlist',
'url': 'https://www.youtube.com/channel/UCtFRv9O2AHqOZjjynzrv-xg',
'info_dict': {
'id': 'UCtFRv9O2AHqOZjjynzrv-xg',
'title': 'UCtFRv9O2AHqOZjjynzrv-xg',
},
'expected_warnings': [
'A channel/user page was given',
'The URL does not have a videos tab',
'Falling back to channel URL',
],
'playlist_mincount': 9,
}]
@classmethod
@ -3631,6 +3658,7 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
# Common mistake: https://www.youtube.com/watch?list=playlist_id
self.report_warning('A video URL was given without video ID. Trying to download playlist %s' % playlist_id)
url = 'https://www.youtube.com/playlist?list=%s' % playlist_id
mobj = get_mobj(url)
if video_id and playlist_id:
if self.get_param('noplaylist'):
@ -3640,6 +3668,31 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
webpage, data = self._extract_webpage(url, item_id)
tabs = try_get(
data, lambda x: x['contents']['twoColumnBrowseResultsRenderer']['tabs'], list)
if tabs:
selected_tab = self._extract_selected_tab(tabs)
tab_name = selected_tab.get('title', '')
if (mobj['tab'] == '/videos' and tab_name.lower() != mobj['tab'][1:]
and 'no-youtube-channel-redirect' not in compat_opts):
if not mobj['not_channel'] and item_id[:2] == 'UC':
# Topic channels don't have /videos. Use the equivalent playlist instead
self.report_warning('The URL does not have a %s tab. Trying to redirect to playlist UU%s instead' % (mobj['tab'][1:], item_id[2:]))
pl_id = 'UU%s' % item_id[2:]
pl_url = 'https://www.youtube.com/playlist?list=%s%s' % (pl_id, mobj['post'])
try:
pl_webpage, pl_data = self._extract_webpage(pl_url, pl_id)
for alert_type, alert_message in self._extract_alerts(pl_data):
if alert_type == 'error':
raise ExtractorError('Youtube said: %s' % alert_message)
item_id, url, webpage, data = pl_id, pl_url, pl_webpage, pl_data
except ExtractorError:
self.report_warning('The playlist gave error. Falling back to channel URL')
else:
self.report_warning('The URL does not have a %s tab. %s is being downloaded instead' % (mobj['tab'][1:], tab_name))
self.write_debug('Final URL: %s' % url)
# YouTube sometimes provides a button to reload playlist with unavailable videos.
if 'no-youtube-unavailable-videos' not in compat_opts:
data = self._reload_with_unavailable_videos(item_id, data, webpage) or data