from youtube_dl.extractor import youtube
from youtube_dl import main

youtube._try_get = _try_get = youtube.try_get
def try_get(src, getter, expected_type=None):
    res = _try_get(src, getter, expected_type)
    if isinstance(res, str) and res.startswith('This live event will begin in '):
        t = _try_get(src, lambda x: x['playabilityStatus']['liveStreamability']['liveStreamabilityRenderer']['offlineSlate']['liveStreamOfflineSlateRenderer']['scheduledStartTime'], str)
        res = f'AUTOYTARCHIVE:{t} {res}'
    return res
youtube.try_get = try_get
main()