[FFmpeg-devel] GIF animation encoder regression
michaelni at gmx.at
Thu Apr 10 20:07:29 CEST 2014
On Tue, Mar 25, 2014 at 12:35:34PM +0100, Clément Bœsch wrote:
> 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.
fixed but i think gif should be fixed by someone as well
forcing intra only encoding due to the input pixel format does not
seem like a very good idea to me
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
While the State exists there can be no freedom; when there is freedom there
will be no State. -- Vladimir Lenin
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