[FFmpeg-devel] [PATCH] FFV1 rectangular slice multithreading

Michael Niedermayer michaelni
Fri Oct 15 01:22:44 CEST 2010

On Thu, Oct 14, 2010 at 02:59:31PM +0200, Michael Niedermayer wrote:
> Hi
> Following patchset makes ffv1.2 much faster on multiprocessor systems
> (requires version to be set to 2, which needs you to edit the source if you
>  want to try as 1.2 bitstream is not finalized yet)
> Compression wise 4 slices with foreman and large gops (300 frames) perform
> slightly better (0.05% IIRC) than 1 slice.
> With small gops (50 frames) compression is worse with the rangecoder and the
> large context model by 0.8% otherwise better too.
> (its quite obvious why its worse in that case and ill be working on that ...)
> Comments welcome, bikesheds not, and ill apply this soon

applied, flame me on svnlog


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Why not whip the teacher when the pupil misbehaves? -- Diogenes of Sinope
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