[FFmpeg-devel] GIF animation encoder regression

[Clément Bœsch]

On Tue, Mar 25, 2014 at 12:06:54PM +0100, Øyvind Kolås wrote:
> 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.
> 

Having pal8 selected by default really isn't a good idea indeed. I have no
idea what commit introduced this change though.

-- 
Clément B.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 490 bytes
Desc: not available
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20140325/99a55357/attachment.asc>