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Re: [MPlayer-dev-eng] Support for xxpc chunks in AVI




On Tue, Mar 08, 2016 at 09:13:49PM +0100, Mats Peterson wrote:
> Mats Peterson <matsp888-at-yahoo.com@xxxxxxxxxx> skrev: (8 mars 2016 21:05:38 CET)
> >"Reimar Döffinger" <Reimar.Doeffinger@xxxxxx> skrev: (8 mars 2016
> >20:28:02 CET)
> >>On Tue, Mar 08, 2016 at 07:46:45AM +0100, Mats Peterson wrote:
> >>> Since you've been so concerned about the whole xxpc chunk issue,
> >>Reimar,
> >>> when will we actually see support for xxpc chunks in the AVI demuxer
> >>in
> >>> MPlayer?
> >>
> >>The only thing I am concerned about is that either things are
> >>implemented properly, or if that's not considered worth it
> >>it's a conscious decision and documented, at the very
> >>least in FFmpeg.
> >>I have no intention to add new features to our AVI demuxer.
> >>Whether maybe FFmpeg's should be the default or if it's
> >>easy enough to print a messages suggesting to use FFmpeg's
> >>manually if such junks are encountered is a different
> >>question though.
> >
> >So am I, regarding things being implemented properly. The best thing
> >would probably be to index the xxpc "junks", as you call it, instead of
> >adding the palette to every keyframe, which would otherwise be needed.
> >Also, to have the demuxer use the right logic to set the correct
> >palette at a certain timestamp based on the xxpc indices.
> 
> Or "xxpc index entries", rather.

I am not aware that the AVI standard contains such a thing?
That you could invent a AVI-like format with such special
support is certainly true, but it doesn't help if you are
writing AVI files.
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