On Thu, Sep 1, 2016 at 1:34 PM, Timo Rothenpieler <t...@rothenpieler.org> wrote: >> Hi, >> >> On Thu, Sep 1, 2016 at 7:00 AM, Ali KIZIL <aliki...@gmail.com> wrote: >> >>> Hi Oliver, >>> >>> I just setup my DDR3 RAM speed to 2133 Mhz on i7 4960x server. It dosnt >>> make a much difference. FPS is still waiving 41-44 fps for UHD P010LE HEVC >>> Main 10 encoding. >>> >>> Also, rawvideo P010LE encodding waiving 39-42 fps. For your note;while FPS >>> waves from 39-42 fps for YUV420P to P010LE, YUV420P to YUV420P10LE fps is >>> like 75-76: >> >> >> I think this is expected, the p010le conversion is C (no SIMD). The >> yuv420p10le conversion is using x86 SIMD (probably AVX). >> >> To fix this, add x86 SIMD implementations of the p010le conversions in >> swscale. Better yet, add direct conversions from yuv420p10 (which I assume >> is the internal format of your actual source after decoding?) to p010le, >> first C and then later x86 SIMD. > > I think 40-50 FPS is quite a nice result for UHD with the plain stupid C > implementation. > > Also, isn't the internal representation of YUV 10bit in swscale > essentially yuv420p10 anyway, so the conversion already is as direct as > it gets? >
The "generic" step using the internal format is still slower then using a "special" converter that directly converts the input to the output without the generic intermediate step. This would probably be relatively easy to build for yuv420p10le -> p010le and save some performance. - Hendrik _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
