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

Don Moir donmoir at comcast.net
Sun Jul 22 13:55:09 CEST 2012

> ----- Original Message ----- 
> From: "Carl Eugen Hoyos" <cehoyos at ag.or.at>
> To: <ffmpeg-devel at ffmpeg.org>
> Sent: Sunday, July 22, 2012 7:18 AM
> Subject: Re: [FFmpeg-devel] [RFC] [PATCH] iff: ANIM suppport
>> Peter Ross <pross <at> xvid.org> writes:
>>> Gents, is there a sample file available that demonstrates the issue?
> I think all the samples at this link produce the problem but try 
> http://www.fileformat.info/format/iff/sample/index.htm
>>> 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.
> I was about to test that patch and will go ahead and test it but you say 
> no good. It will be easy for me to test anything else you might come up 
> with

That patch does work as expected since it just means there will be no alpha 
but it could possibly break a file that has real alpha in it - don't know.

Not sure how you will be testing this case, but don't come to the wrong 
conclusion by using an app that doesn't do transparency. 

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