[FFmpeg-devel] [PATCH] attachments support in matroska demuxer
Fri Jan 4 23:55:36 CET 2008
On Sat, Jan 05, 2008 at 01:01:47AM +0300, Evgeniy Stepanov wrote:
> On Thursday 03 January 2008 04:23:09 Michael Niedermayer wrote:
> > > It seems to me that attachment would fit pretty well, each one
> > > in its own AVStream. Does this sound reasonable ?
> > > - Here is how remuxing to other formats (avi, mov...) could work:
> > > * supported codec (jpeg poster) could be muxed as a normal
> > > JPEG stream with only one picture
> > > * ttf streams should be written in a separate file (that's
> > > the way various players expect to find ttf fonts when
> > > demuxing AVI, IIRC)
> > >
> > > - I think the only required API modifications to support this
> > > would be:
> > > * adding AVStream.filename and maybe AVStream.id_of_link_stream.
> > > * adding CODEC_ID_TTF ? (ugly, but shouldn't cause much trouble)
> > > * adding a way to mux ttf font in a separate file (maybe use
> > > a separate muxer for this, ie. call 2 different muxers from
> > > ffmpeg. seems ugly, but I've no better idea right now).
> > Well, there are a few more things i think
> > We need name / (mime) type to remux attachments
> > (CD Cover / ? / tiff)
> > (Fan art / image/x-photoshop / psd)
> > There also could be other things like Author, ...
> And what about stream count limit ? 20 is probably too low, I've definitely
MAX_STREAMS should be removed independant of the attachment stuff, a a patch
replacin it by av_realloc() and local_array[s->nb_streams] is welcome
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
I have often repented speaking, but never of holding my tongue.
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