Hi,
On Sun, Jul 20, 2014 at 12:31 PM, Christophe Gisquet < christophe.gisq...@gmail.com> wrote: > Hi, > > 2014-07-20 13:35 GMT+02:00 Ronald S. Bultje <rsbul...@gmail.com>: > > Do you get a speedup? I tinkered with some related problem in vp9 once > and > > I never got a significant speedup out of it... > > Whatever your definition of significant, I don't think the figure I have > is. > > It's around 1% on a dual core system on average, but that's near the > measurement error on the other hand. I'll probably be able to provide > figures for systems with more cores within a few days. Another > possible comparison point is the impact in openhevc. I've heard it is > more than 20% faster per core over ffhevc, therefore I'd expect such > things to cause a bigger impact. > > Technically, I wager hevc and vp9 are different here. hevc has a > second level of filtering called sao, that causes a delay of one CTB > line/64 pixel lines. So, effectively, parsing and pixel output are > probably farther apart than in vp9. That's a fair explanation - and yes, 1% is totally worth it (imo). Ronald _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
