[FFmpeg-user] Select forced subtitles

Erwann BORDAGE ebordage at gmail.com
Tue Nov 5 13:05:02 CET 2013

Hi, is there any way to detect/select the forced subtitles of a subtitle
stream in ffmpeg ?

Indeed, sometimes a BD subtitle stream can embed forced AND non-forced
subtitles. So Is there any way to identify the forced subtitles from the
others ? My actual solution is to demux my video file and use a third party
software (such a BDSup2Sub) to extract only the forced subtitles, and then
use ffmpeg to do the encoding job ...

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