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[youtube] improve Youtube Music Auto-generated description parsing(closes #20742)

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This commit is contained in:
Remita Amine 2019-04-27 09:16:17 +01:00
parent 5caabd3c70
commit 822b9d9cb0
1 changed files with 22 additions and 33 deletions
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55
youtube_dl/extractor/youtube.py
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@ -1088,7 +1088,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
},
},
{
# artist and track fields should return non-null, per issue #20599
# Youtube Music Auto-generated description
'url': 'https://music.youtube.com/watch?v=MgNrAu2pzNs',
'info_dict': {
'id': 'MgNrAu2pzNs',
@ -1109,11 +1109,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
},
},
{
# Youtube Music Auto-generated description
# Retrieve 'artist' field from 'Artist:' in video description
# when it is present on youtube music video
# Some videos have release_date and no release_year -
# (release_year should be extracted from release_date)
# https://github.com/ytdl-org/youtube-dl/pull/20742#issuecomment-485740932
'url': 'https://www.youtube.com/watch?v=k0jLE7tTwjY',
'info_dict': {
'id': 'k0jLE7tTwjY',
@ -1134,6 +1132,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
},
},
{
# Youtube Music Auto-generated description
# handle multiple artists on youtube music video
'url': 'https://www.youtube.com/watch?v=74qn0eJSjpA',
'info_dict': {
@ -1155,6 +1154,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
},
},
{
# Youtube Music Auto-generated description
# handle youtube music video with release_year and no release_date
'url': 'https://www.youtube.com/watch?v=-hcAI0g-f5M',
'info_dict': {
@ -2161,36 +2161,25 @@ def extract_meta(field):
track = extract_meta('Song')
artist = extract_meta('Artist')
album = None
release_date = None
release_year = None
description_info = video_description.split('\n\n')
# If the description of the video has the youtube music auto-generated format, extract additional info
if len(description_info) >= 5 and description_info[-1] == 'Auto-generated by YouTube.':
track_artist = description_info[1].split(' · ')
if len(track_artist) >= 2:
if track is None:
track = track_artist[0]
if artist is None:
artist = re.search(r'Artist: ([^\n]+)', description_info[-2])
if artist:
artist = artist.group(1)
if artist is None:
artist = track_artist[1]
# handle multiple artists
if len(track_artist) > 2:
for i in range(2, len(track_artist)):
artist += ', %s' % track_artist[i]
release_year = re.search(r'℗ ([0-9]+)', video_description)
if release_year:
release_year = int_or_none(release_year.group(1))
album = description_info[2]
if description_info[4].startswith('Released on: '):
release_date = description_info[4].split(': ')[1].replace('-', '')
# extract release_year from release_date if necessary
if release_year is None:
release_year = int_or_none(release_date[0:4])
# Youtube Music Auto-generated description
album = release_date = release_year = None
if video_description:
mobj = re.search(r'(?s)Provided to YouTube by [^\n]+\n+(?P<track>[^·]+)·(?P<artist>[^\n]+)\n+(?P<album>[^\n]+)(?:.+?℗\s*(?P<release_year>\d{4})(?!\d))?(?:.+?Released on\s*:\s*(?P<release_date>\d{4}-\d{2}-\d{2}))?(.+?\nArtist\s*:\s*(?P<clean_artist>[^\n]+))?', video_description)
if mobj:
if not track:
track = mobj.group('track').strip()
if not artist:
artist = mobj.group('clean_artist') or ', '.join(a.strip() for a in mobj.group('artist').split('·'))
album = mobj.group('album'.strip())
release_year = mobj.group('release_year')
release_date = mobj.group('release_date')
if release_date:
release_date = release_date.replace('-', '')
if not release_year:
release_year = int(release_date[:4])
if release_year:
release_year = int(release_year)
m_episode = re.search(
r'<div[^>]+id="watch7-headline"[^>]*>\s*<span[^>]*>.*?>(?P<series>[^<]+)</a></b>\s*S(?P<season>\d+)\s*•\s*E(?P<episode>\d+)</span>',