[FFmpeg-devel] Fix for FFMPEG vp8dec loopfilter delta values reset at keyframes

Michael Niedermayer michaelni at gmx.at
Sat Oct 13 12:49:03 CEST 2012

On Fri, Oct 12, 2012 at 01:42:09PM +0300, Sami Pietilä wrote:
> Hi all,
> while testing a VP8 encoder I found a mismatch between FFMPEG and libvpx
> VP8 decoders. The reason for this mismatch is that FFMPEG doesn't reset
> loopfilter delta values at keyframes. Patch that fixes the issue is below.
> I've verified that the output of ffmpeg after this patch matches libvpx. If
> you need I can send you a stream that shows the issue.

patch applied

a sample stream would be very welcome!



Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Complexity theory is the science of finding the exact solution to an
approximation. Benchmarking OTOH is finding an approximation of the exact
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