[Ffmpeg-cvslog] Re: ffmpeg-cvslog Digest, Vol 20, Issue 21
Wed Nov 8 23:07:40 CET 2006
Steve Lhomme <steve.lhomme at free.fr> writes:
> Alex Beregszaszi <alex at fsn.hu> writes:
> > Hi,
> >> Log:
> >> add support for AAC in matroska
> > Why matroska has to be so complicated? :)
> > I think it was one of the design goals.
> > --
> > M?ns Rullg?rd
> > From: Nico Sabbi <nicola_sabbi at fastwebnet.it>
> > indeed: in every single mmedia program I've seen so far
> > the demuxer for matroska is by far the largest and most
> > full of special cases to handle separately
> Oh boy. Not again...
> Let me see, Matroska handles more formats than any other format,
> handles attachment, chapters, VFR, compressed data, subtitles,
> index-less playback, fast seeking, gaps, tags, interactive playback
> (DVD menus), seamless file linking and recently 3D/stereo files, all
> that with the lowest overhead. So yes, it may take some code to
> achieve that.
Oh boy. So much fluff from someone who can't even quote an email
> It can take very little code to actually handle basic matroska files,
> once you have the EBML layer working. (MOV and AVI hide this code in
> riff.c in lavf).
The rather large size of all known matroska demuxers seems to
contradict that statement.
> And yes, the AAC codec was a mess so far in matroska as some codec
> "information" were given by the codec ID. Now "A_AAC" alone should be
> used with setting the common MPEG4 extradata (3 or 5 bytes).
The spec on the web fails to mention this.
mru at inprovide.com
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