[FFmpeg-devel] [PATCH]Animated gif transparency

Don Moir donmoir at comcast.net
Fri Dec 21 20:46:01 CET 2012

----- Original Message ----- 
From: "Carl Eugen Hoyos" <cehoyos at ag.or.at>
To: "FFmpeg development discussions and patches" <ffmpeg-devel at ffmpeg.org>
Sent: Friday, December 21, 2012 1:20 PM
Subject: Re: [FFmpeg-devel] [PATCH]Animated gif transparency

> On Friday 21 December 2012 06:27:31 pm Paul B Mahol wrote:
>> >> as it is worse with it than without it.
>> >
>> > I disagree but it is honestly not that important.
>> Well with it I get black rectangles for gifs that
>> use disposals, dont you have same with ImageMagick?
> LOL, I didn't even think of testing with ImageMagick
> that basically has the same problem as my original
> patch.
> New patch attached. (Pure guessing!)

Much better but here's 3 more problems:

This one is transparent but shows an initial white frame and then the border is retained as white. The white should be all 
transparent an no initial white.


Has a black interior rect. Probably disposal issue.


Has currupt black areas.


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