[FFmpeg-trac] #1963(FFmpeg:new): ffv1 does not support threads

[FFmpeg]

#1963: ffv1 does not support threads
--------------------------------+---------------------------------------
             Reporter:  Safari  |                     Type:  enhancement
               Status:  new     |                 Priority:  normal
            Component:  FFmpeg  |                  Version:  git-master
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
--------------------------------+---------------------------------------
 Summary of the bug: at max 15 fps encoding with ffv1 with i5-2500K CPU @
 3.30GHz, 1920x1200

 with libx264 (crf 15) I get 60 fps (it supports threads).

 How to reproduce:
 {{{
 ffmpeg -y -threads auto -f x11grab -show_region 1 -r 60 -s 1920,1200 -i
 :0.0 -vcodec ffv1 -q:v 0 -pix_fmt yuv444p -f matroska -t 3 jee.mkv
 ffmpeg version N-73987-gc3e2ee7 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Nov 22 2012 02:55:32 with gcc 4.7.2 (GCC) 20121109 (Red Hat
 4.7.2-8)
   configuration: --cc=/usr/bin/gcc --enable-libvorbis --enable-libx264
 --enable-libmp3lame --enable-gpl --enable-pthreads --enable-postproc
 --enable-libxvid --enable-libfaac --enable-libgsm --enable-libtheora
 --enable-libdc1394 --enable-libopencore-amrnb --enable-libopencore-amrwb
 --enable-nonfree --enable-libschroedinger --enable-static --enable-gray
 --enable-avfilter --enable-version3 --enable-filter=all --enable-bsf=all
 --enable-libcelt --disable-stripping --disable-shared --enable-vdpau
 --enable-vaapi --enable-libcaca --enable-libaacplus --enable-libass
 --enable-x11grab --enable-libopus
   libavutil      52.  8.100 / 52.  8.100
   libavcodec     54. 74.100 / 54. 74.100
   libavformat    54. 37.100 / 54. 37.100
   libavdevice    54.  3.100 / 54.  3.100
   libavfilter     3. 23.101 /  3. 23.101
   libswscale      2.  1.102 /  2.  1.102
   libswresample   0. 17.101 /  0. 17.101
   libpostproc    52.  2.100 / 52.  2.100
 [x11grab @ 0x34d36e0] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1920
 height: 1200
 [x11grab @ 0x34d36e0] shared memory extension found
 [x11grab @ 0x34d36e0] Estimating duration from bitrate, this may be
 inaccurate
 Input #0, x11grab, from ':0.0':
   Duration: N/A, start: 1353785898.824541, bitrate: N/A
     Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1200,
 -2147483 kb/s, 60 tbr, 1000k tbn, 60 tbc
 Output #0, matroska, to 'jee.mkv':
   Metadata:
     encoder         : Lavf54.37.100
     Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv444p, 1920x1200,
 q=2-31, 200 kb/s, 1k tbn, 60 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo -> ffv1)
 Press [q] to stop, [?] for help
 frame=  180 fps=15.2 q=0.0 Lsize=   46359kB time=00:00:03.00
 bitrate=126590.7kbits/s
 video:46356kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 0.005250%

 }}}
 perf top:
 {{{
  69.76%  ffmpeg-20121122                          [.] encode_plane
   5.42%  ffmpeg-20121122                          [.]
 ff_hscale14to15_4_ssse3.loop
   2.48%  libc-2.15.so                             [.] __memcpy_ssse3_back
   2.16%  ffmpeg-20121122                          [.] ff_rgbaToUV_avx.loop
   1.73%  [kernel]                                 [k]
 copy_user_generic_string
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1963>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker