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| import re | |
| from youtube_transcript_api import YouTubeTranscriptApi | |
| from youtube_transcript_api._errors import TranscriptsDisabled | |
| MAX_SIZE = 50_000 | |
| YT_REGEX = r'^((http)s?:\/\/)?((www\.)|(m\.))?youtube.com\/watch\?([^\?]*&)?v=.+$' # noqa | |
| YT_REGEX_SHORT = r'^((http)s?:\/\/)?youtu.be\/([^\?=]+)(\?[^?]+)?$' | |
| def _extract_video_id(url: str) -> str: | |
| if not re.match(YT_REGEX, url): | |
| if not re.match(YT_REGEX_SHORT, url): | |
| return '' | |
| ind = url.find('?') | |
| ind = len(url) if ind == -1 else ind | |
| return url[url.find('e/')+2:ind] | |
| res = url.split('v=') | |
| ind = res[1].find('&') | |
| ind = len(res[1]) if ind == -1 else ind | |
| return res[1][:ind] | |
| def get_youtube_caption(url: str) -> str: | |
| try: | |
| video_id = _extract_video_id(url) | |
| if not video_id: | |
| return '' | |
| res, size = [], 0 | |
| for transcript in YouTubeTranscriptApi.get_transcript(video_id): | |
| res.append(transcript['text'].replace('\n', ' ')) | |
| size += len(transcript['text']) | |
| if size >= MAX_SIZE: | |
| return ' '.join(res)[:MAX_SIZE] | |
| return ' '.join(res)[:MAX_SIZE] | |
| except TranscriptsDisabled: | |
| return 'no-cap' | |
| except Exception: | |
| return 'err' | |