[FFmpeg-devel] [RFC] [PATCH] iff: ANIM suppport

Peter Ross pross at xvid.org
Sun Jul 22 13:04:54 CEST 2012

On Sun, Jul 22, 2012 at 09:20:18AM +0000, Carl Eugen Hoyos wrote:
> Don Moir <donmoir <at> comcast.net> writes:
> > >> I am using about a month old ffmpeg.
> > >
> > > Please consider reading http://ffmpeg.org/contact.html (esp. the part
> > > about thread hijacking) and http://ffmpeg.org/bugreports.html
> > 
> > I figure someone that is in there with IFF currently might want to know 
> > about it. There is no hijack about it... just common sense. 
> You misunderstand:
> Everybody here does want to know about problems with FFmpeg (and I am 
> particularly interested in transparency bugs), but not in unrelated 
> threads that incidentally are about the same format, apart from the 
> fact that bug-reports are not welcome on ffmpeg-devel if you don't 
> want to work on the fix yourself.
> Both trac and ffmpeg-users are followed by developers so there is no 
> reason not to report problems there.

Gents, is there a sample file available that demonstrates the issue?

> Anyway, please test following inlined patch and report back.
> (@Peter: Any comments?)

Carl, this patch is no good. The decoder already supports some transparency.
It sets the alpha bits to 0xFF for all standard pixels, and clears them to 
0x00 for transparent pixels. I dont know what the problem is.

(Re you patch, there are other pix_fmt==BGR32 tests elsewhere in the code;
so you need to changes these lines too for it to function.)

-- Peter
(A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
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