[FFmpeg-user] Faster vp9

[Andrew Sinclair]

Hi,

Does anyone have any suggestions for faster vp9 encoding?

On a reasonable 4 core hyperthreaded machine I am getting <4fps encoding
speed using the following:

ffmpeg -i artofflight.mp4 -c:v libvpx-vp9 -threads 8 -b:v 1000k -speed 4
-tile-columns 6 -frame-parallel 1 -auto-alt-ref 1 -lag-in-frames 25 -f webm
/dev/null
ffmpeg version N-69484-g6d1d036 Copyright (c) 2000-2015 the FFmpeg
developers
  built with Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn)
  configuration: --prefix=/usr/local --enable-gpl --enable-nonfree
--enable-libass --enable-libfdk-aac --enable-libfreetype
--enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis
--enable-libvpx --enable-libx264 --enable-libxvid
  libavutil      54. 18.100 / 54. 18.100
  libavcodec     56. 21.102 / 56. 21.102
  libavformat    56. 19.100 / 56. 19.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5.  9.103 /  5.  9.103
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'artofflight.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf56.3.100
  Duration: 00:06:16.77, start: 0.000000, bitrate: 2990 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1920x1080 [SAR 1:1 DAR 16:9], 2857 kb/s, 29.97 fps, 29.97 tbr, 90k tbn,
59.94 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
stereo, fltp, 125 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
File '/dev/null' already exists. Overwrite ? [y/N] y
[libvpx-vp9 @ 0x7faf43894c00] v1.3.0
Output #0, webm, to '/dev/null':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf56.19.100
    Stream #0:0(und): Video: vp9 (libvpx-vp9), yuv420p, 1920x1080 [SAR 1:1
DAR 16:9], q=-1--1, 1000 kb/s, 29.97 fps, 1k tbn, 29.97 tbc (default)
    Metadata:
      handler_name    : VideoHandler
      encoder         : Lavc56.21.102 libvpx-vp9
    Stream #0:1(und): Audio: vorbis (libvorbis), 44100 Hz, stereo, fltp
(default)
    Metadata:
      handler_name    : SoundHandler
      encoder         : Lavc56.21.102 libvorbis
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> vp9 (libvpx-vp9))
  Stream #0:1 -> #0:1 (aac (native) -> vorbis (libvorbis))
Press [q] to stop, [?] for help
frame=11290 fps=3.6 q=0.0 Lsize=   52799kB time=00:06:16.76
bitrate=1148.0kbits/s
video:48033kB audio:4557kB subtitle:0kB other streams:0kB global
headers:4kB muxing overhead: 0.397613%