[FFmpeg-devel] [PATCH] Patch cleanup for MPEG 1 & 2 optimizations

[Jeff Downs]

On Mon, 14 Apr 2008, Michael Niedermayer wrote:
> [...]
> 
> question is, is this slower than the variant with is_mpeg12 hardcoded ?

Slightly. The MPEG2 testing is better suited because my sample is a bit 
longer.

MPEG1 w/ patches
User: avg: 0.196  stddev: 0.003  med: 0.197
Real: avg: 0.199  stddev: 0.002  med: 0.198

MPEG1 w/ is_mpeg12 hardcoded:
User: avg: 0.195  stddev: 0.003  med: 0.197
Real: avg: 0.199  stddev: 0.001  med: 0.198


MPEG2 w/ Patches:
User: avg: 3.012  stddev: 0.023  med: 3.005
Real: avg: 3.056  stddev: 0.026  med: 3.049

MPEG2 w/ is_mpeg12 hardcoded:
User: avg: 2.999  stddev: 0.023  med: 2.991
Real: avg: 3.044  stddev: 0.024  med: 3.037


(patch submitter welcome to take up benchmark reigns here  :))