[FFmpeg-devel] Artifacts in VP8

Michael Niedermayer michaelni at gmx.at
Fri Jul 27 18:58:50 CEST 2012

On Fri, Jul 27, 2012 at 06:37:40PM +0200, Andy Bell wrote:
> Hi All,
> I am encoding a VP8 stream using a Windows builds from
> Zeronae, 20120612-git-728f86e-win32.  If I try to decode the same stream on
> Android with any new revision I get small artifacts in the image, little
> black blocks basically.  If I roll back to say version 0.8.10 from the
> FFMPEG site the video is fine, if I try with 0.11.1 then I get the problem.
>  The same problem occurs in the latest git revisions as well.
> I know this may be difficult to answer but what could have changed from
> 0.8.10 to the present that would cause these small black blocks?

you could try to bisect between teh 2 revissions to find out which
commit broke it

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Asymptotically faster algorithms should always be preferred if you have
asymptotical amounts of data
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