[FFmpeg-devel] DVD subtitles
Fri Feb 29 10:34:28 CET 2008
> What exactly can I do with subtitles using the ffmpeg program before and
> after your contribution? I was under the impression that it was already
> possible to convert dvb subtitles from and to dvb subtitles.
It is already possible under specific circumstances:
- just one rectangle per subtitle (the encoder happily creates
more than one, but I know no player which can show more than one)
[I have fixed this with the "merging" filter]
- just one color (well more than one is possible, but they are all
mapped to the same color basically)
[I have improved this with a slightly more elaborate colormap compressor]
But there are several patches required for the generic ffmpeg code,
too. I'm trying to get them in but am afraid it will take long.
> I guess the SubtitleRects can have varying bounds and offsets as opposed
> to a picture?
They do have width and height bundled, but no offsets AFAICS.
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