[FFmpeg-user] Transcoding video with subtitles to mp4 or mpegts
Carl Eugen Hoyos
cehoyos at ag.or.at
Wed Sep 10 18:49:01 CEST 2014
Xavier Benech <xavier.benech <at> xb-labs.fr> writes:
> I've got videos with several subtitles streams using
> subrip and dvdsub codecs.
> When I try to transcode them into mp4 and/or mpegts,
> from what I've read so far it seems I must use
> "-scodec mov_text" option.
Note that unfortunately the output files are still
not completely compatible with Quicktime;-(
> But this seems to work only if input subtitles
> stream contains subtitles as text.
Definitely (FFmpeg does not use OCR).
> This leads to my question: How can I determine if a
> subtitle stream can be transcode to "mov_text"? Is
> there a list of subtitles codecs that are pur text?
The following are the bitmap subtitles:
dvbsub, dvdsub, xsub and pgssub
Teletext is both.
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