[Ffmpeg-devel] [PATCH] HD DVD subtitle decoding

Ian Caulfield ian.caulfield
Thu Jan 25 13:38:19 CET 2007

On 25/01/07, Guillaume POIRIER <poirierg at gmail.com> wrote:
> Hi,
> On 1/25/07, Ian Caulfield <ian.caulfield at gmail.com> wrote:
> > Hi,
> >
> > The attached patches add support for HD DVD subtitles (both 2-bit and
> 8-bit)
> > to the dvdsub decoder.
> Does samples.mlayerhq.hu have the necessary samples to test your patch?
> Please give a link to such samples, as well as a test case (as a set
> of command lines) to test it.

I think ffplay is the easiest way to check, but it doesn't work so well on
my machine, so I enabled the DEBUG define, which will dump the decoded
subtitle into /tmp/a.ppm (minus transparency). There currently isn't a way
to decode subtitles to a set of image files with ffmpeg as far as I can see.

http://samples.mplayerhq.hu/evob/ both contain HD subtitle streams, but the
subtitles are at a different resolution to the main video, so the display on
ffplay is strange. I'll upload a better sample.


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