Hi, 2016-05-02 11:16 GMT+02:00 Alexandra Hájková <[email protected]>:
> I did svq3_get_ue_golomb optimisation and benchmarks for svq3 decoder > with and without the optimisation (dirac allso calls svq3_get_ue_golomb). Yeah, I see you've added it afterwards with 10ce342505. The version I got from your tree didn't have it: https://github.com/kurosu/ffmpeg/blob/gb/libavcodec/golomb_bc.h#L110 and I did something equivalent for diracdec elsewhere: https://github.com/kurosu/ffmpeg/commit/988fc9d28ac8c069a65e7413c3502d3150f884e8 > https://samples.libav.org/V-codecs/SVQ3/FF_VII_AC_High_Res_E3_Trailer.mov [...] > with optimisation: my branch: 5.52 sec --> 1.6 % speed up -- with -threads 1 OK, thanks for the info. > Libav doesn't has vc2/dirac, Yeah, that's a pity, but that's not really up to me either. > I don't know which promblem might it > have with threading or anything else and it's not up to me to solve > this. Sure, and neither it is for me. I have informed the authors about that issue. It's just that my data is inconclusive, as the slowdown reason is not obvious. Thanks and best regards, -- Christophe _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
