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Code Issues Releases Wiki Activity

[youtube] Fix download of auto-captions when subtitles are available

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When invoked with --write-auto-sub (but without --write-sub),
youtube-dl should only download automatic captions. However, for some
videos with both automatic captions and manual
subtitles (e.g. 2klmuggOElE; accessed on 16.04.2020), youtube-dl
selects the manual subtitle track regardless.

This commit makes _get_automatic_captions prefer a
renderer['captionTracks'] entry with 'kind' == 'asr', if one is
available, as the 'kind=asr' parameter also distinguishes the
baseUrl's (but one could also filter by vssId.startswith('a.')).
This commit is contained in:
Madars Virza 2020-04-16 14:04:43 -04:00
parent 00eb865b3c
commit ef8c0ad835
1 changed files with 8 additions and 0 deletions
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8
youtube_dl/extractor/youtube.py
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@ -1519,6 +1519,14 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
if player_response:
renderer = player_response['captions']['playerCaptionsTracklistRenderer']
base_url = renderer['captionTracks'][0]['baseUrl']
# the first caption track might contain manual
# subtitles not auto-captions (e.g. 2klmuggOElE,
# accessed on 16.04.2020) so we look further in
# captionTracks and select a base_url from an
# explicitly marked asr track if one exists.
for track in renderer['captionTracks'][1:]:
if track.get('kind') == 'asr':
base_url = track['baseUrl']
sub_lang_list = []
for lang in renderer['translationLanguages']:
lang_code = lang.get('languageCode')