[FFmpeg-devel] GIF animation encoder regression

[Øyvind Kolås]

On Sun, Mar 23, 2014 at 1:26 PM, Øyvind Kolås <islewind at gmail.com> wrote:
> ... http://pippin.gimp.org/a_dither/ ) There is a new patch - that
> applies; and FATE passes.

> ... the GIF encoder no longer marks
> pixels not changing between frames as transparent - effectively
> treating every single frame in the GIF animation as an I-frame.

Thanks to ubitux on #ffmpeg-devel I now know the reason for the change
in behavior. It used to default to rgb8 for GIF and now defaults to
pal8; and an additional -pix_fmt rgb8 is now neccesary to make
positionally stable dithering methods take advantage of delta encoding
with transparency.

/pippin