[FFmpeg-devel] [PATCH] doc/bsf: document movsub2txt and txt2movsub

Lou Logan lou at lrcd.com
Sun Jun 8 04:25:32 CEST 2014

On Sun, 8 Jun 2014 02:21:42 +0200, Michael Niedermayer wrote:

> On Wed, May 28, 2014 at 04:19:03PM -0800, Lou Logan wrote:
> > Signed-off-by: Lou Logan <lou at lrcd.com>
> > ---
> > * I could not figure out an example for text2movsub
> try to mail/CC the author

I did eventually ask Reimar. I hope he doesn't mind if I quote him:

  "I believe the main purpose was to test demuxing of it without having
   to write a decoder, I am not sure how much of a point it still
   serves? It seems correct in principle, but admittedly the
   mov2textsub sample would be more interesting for actually remuxing
   to a different format, like MKV - except for the fact that that does
   not actually work.

   For the text2movsub the theory is that you would take any file with
   plain text subtitles (e.g. srt) and just add it to then get a mov
   file with text subtitles. However it almost certainly will not work

   I guess the short for is: these never got beyond proof-of-concept /
   format documentation state."
> > * mov_text sample: http://samples.ffmpeg.org/mov/subtitles-embedded/water_phase_diagram_cap.mov
> > 
> >  doc/bitstream_filters.texi | 12 +++++++++++-
> >  1 file changed, 11 insertions(+), 1 deletion(-)
> should be ok

Given what he said I didn't really decide or know what to do about it,
so I guess for now I'll just drop this patch and slowly move on to the
other undocumented bsf.

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