[FFmpeg-devel] [PATCH] attachments support in matroska demuxer
Thu Jan 3 04:29:34 CET 2008
On Wed, Jan 02, 2008 at 06:45:44PM -0700, Loren Merritt wrote:
> On Wed, 2 Jan 2008, Rich Felker wrote:
> > On Wed, Jan 02, 2008 at 06:49:28AM +0200, Uoti Urpala wrote:
> >> Extradata may happen to be identical, but subtitles can refer to "the
> >> same font" in a stricter sense. If you demux a .mkv file into separate
> >> files, a natural format is to have an audio file (or files), a video
> >> file, a .ssa/.ass file (or files) and a bunch of font files. Nobody
> >> splits video/audio tracks into separate "standard extradata" and "main
> >> content" parts.
> > I agree here too. Most subtitle 'codecs' already have an extradata
> > format of their own, text-based, separate from the binary ttf data.
> > Most likely it's the "header text" which would appear at the beginning
> > of the subtitle file if it were flat text. So it would be rather
> > problematic to try to munge the fonts together with this...
> You can put fonts in SSA extradata, using a variant of uuencoding. I
> haven't seen this recently, but I have some movies using this from before
Ahh, perhaps the mkv demuxer should translate them and append them to
the extradata like this. At least then it's some kind of sane,
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