> I want to extract subtitles from a MPEG video (which does not have any > previous subtitles) and then add them to the same video .
I am not sure I parse the above: You want to *extract* subtitles from a video which *does not have* subtitles ? I have a feeling you will need to rephrase your objective to get better help. Karsten -- https://mail.python.org/mailman/listinfo/python-list