diff options
| -rw-r--r-- | yt_dlp/extractor/youtube.py | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/yt_dlp/extractor/youtube.py b/yt_dlp/extractor/youtube.py index a90118680..ef9f1f11c 100644 --- a/yt_dlp/extractor/youtube.py +++ b/yt_dlp/extractor/youtube.py @@ -4346,15 +4346,21 @@ class YoutubeIE(YoutubeBaseInfoExtractor): info[d_k] = parse_duration(query[k][0]) # Youtube Music Auto-generated description - if video_description: + if (video_description or '').strip().endswith('\nAuto-generated by YouTube.'): + # XXX: Causes catastrophic backtracking if description has "·" + # E.g. https://www.youtube.com/watch?v=DoPaAxMQoiI + # Simulating atomic groups: (?P<a>[^xy]+)x => (?=(?P<a>[^xy]+))(?P=a)x + # reduces it, but does not fully fix it. https://regex101.com/r/8Ssf2h/2 mobj = re.search( r'''(?xs) - (?P<track>[^·\n]+)·(?P<artist>[^\n]+)\n+ - (?P<album>[^\n]+) + (?=(?P<track>[^\n·]+))(?P=track)· + (?=(?P<artist>[^\n]+))(?P=artist)\n+ + (?=(?P<album>[^\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]+))? - .+\nAuto-generated\ by\ YouTube\.\s*$ + (.+?\nArtist\s*:\s* + (?=(?P<clean_artist>[^\n]+))(?P=clean_artist)\n + )?.+\nAuto-generated\ by\ YouTube\.\s*$ ''', video_description) if mobj: release_year = mobj.group('release_year') |