Changes between Version 24 and Version 25 of Encode/H.264


Ignore:
Timestamp:
Sep 25, 2012, 6:42:13 PM (7 years ago)
Author:
rogerdpack
Comment:

update notes

Legend:

Unmodified
Added
Removed
Modified
  • Encode/H.264

    v24 v25  
    146146=== Why doesn't my lossless output look lossless? ===
    147147
    148 Blame the rgb->yuv conversion. If you convert to yuv422p, it should still be lossless (which is the default now).
     148Blame the rgb->yuv conversion. If you convert to yuv444, it should still be lossless (which is the default now).
    149149
    150150=== Will a graphics card make x264 encode faster? ===
    151151
    152 No. x264 doesn't use them at all. There are some proprietary encoders that utilize the GPU, but that does not mean they are very good or well optimized; and they might be [http://phoronix.com/forums/showthread.php?50697-Test-tool-for-snb-h264-encoder-in-libva-git&p=205580#post205580 slower than x264] anyway. But they might be faster. Regardless, FFmpeg today doesn't support any means of gpu encoding.
     152No. libx264 doesn't use them (at least not yet). There are some proprietary encoders that utilize the GPU, but that does not mean they are well optimized, though encoding time may be faster; and they might be [http://phoronix.com/forums/showthread.php?50697-Test-tool-for-snb-h264-encoder-in-libva-git&p=205580#post205580 worse than x264] anyway, and possibly slower. Regardless, FFmpeg today doesn't support any means of gpu encoding, outside of libx264.