[FFmpeg-trac] #3161(FFmpeg:new): libvpx crf does nothing

[FFmpeg]

#3161: libvpx crf does nothing
------------------------------------+----------------------------------
             Reporter:  LinAGKar    |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  FFmpeg
              Version:  2.0.2       |               Resolution:
             Keywords:  libvpx crf  |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+----------------------------------

Comment (by LinAGKar):

 crf=4:
 {{{
 > ffmpeg -i Big\ Buck\ Bunny.mkv -t 15 -an -vcodec libvpx -crf 4 Big\
 Buck\ Bunny\ 4.webm
 ffmpeg version 2.0.2 Copyright (c) 2000-2013 the FFmpeg developers
   built on Oct 19 2013 08:34:03 with gcc 4.7 (SUSE Linux)
   configuration: --shlibdir=/usr/lib64 --prefix=/usr
 --mandir=/usr/share/man --libdir=/usr/lib64 --enable-shared --disable-
 static --enable-debug --disable-stripping --extra-cflags='-fmessage-
 length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables
 -fasynchronous-unwind-tables -g -fPIC -I/usr/include/gsm' --enable-gpl
 --enable-x11grab --enable-version3 --enable-pthreads --enable-avfilter
 --enable-libpulse --enable-libvpx --enable-libopus --enable-libass
 --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-
 libspeex --enable-libxvid --enable-libx264 --enable-libschroedinger
 --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb
 --enable-postproc --enable-libdc1394 --enable-librtmp --enable-libfreetype
 --enable-avresample --enable-libtwolame --enable-libvo-aacenc
   libavutil      52. 38.100 / 52. 38.100
   libavcodec     55. 18.102 / 55. 18.102
   libavformat    55. 12.100 / 55. 12.100
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 79.101 /  3. 79.101
   libavresample   1.  1.  0 /  1.  1.  0
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, matroska,webm, from 'Big Buck Bunny.mkv':
   Metadata:
     ENCODER         : Lavf55.12.100
   Duration: 00:09:56.46, start: 0.000000, bitrate: 309088 kb/s
     Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), bgr0, 1920x1080, SAR 1:1
 DAR 16:9, 24 fps, 24 tbr, 1k tbn, 1k tbc (default)
     Stream #0:1: Audio: flac, 48000 Hz, 5.1(side), s32 (default)
 [libvpx @ 0x1eac7a0] v1.1.0
 Output #0, webm, to 'Big Buck Bunny 4.webm':
   Metadata:
     encoder         : Lavf55.12.100
     Stream #0:0: Video: vp8 (libvpx), yuv420p, 1920x1080 [SAR 1:1 DAR
 16:9], q=-1--1, 200 kb/s, 1k tbn, 24 tbc (default)
 Stream mapping:
   Stream #0:0 -> #0:0 (ffv1 -> libvpx)
 Press [q] to stop, [?] for help
 frame=  360 fps=6.7 q=0.0 Lsize=     779kB time=00:00:15.00 bitrate=
 425.6kbits/s
 video:776kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 0.394523%
 }}}

 crf=63:
 {{{
 > ffmpeg -i Big\ Buck\ Bunny.mkv -t 15 -an -vcodec libvpx -crf 63 Big\
 Buck\ Bunny\ 63.webm
 ffmpeg version 2.0.2 Copyright (c) 2000-2013 the FFmpeg developers
   built on Oct 19 2013 08:34:03 with gcc 4.7 (SUSE Linux)
   configuration: --shlibdir=/usr/lib64 --prefix=/usr
 --mandir=/usr/share/man --libdir=/usr/lib64 --enable-shared --disable-
 static --enable-debug --disable-stripping --extra-cflags='-fmessage-
 length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables
 -fasynchronous-unwind-tables -g -fPIC -I/usr/include/gsm' --enable-gpl
 --enable-x11grab --enable-version3 --enable-pthreads --enable-avfilter
 --enable-libpulse --enable-libvpx --enable-libopus --enable-libass
 --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-
 libspeex --enable-libxvid --enable-libx264 --enable-libschroedinger
 --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb
 --enable-postproc --enable-libdc1394 --enable-librtmp --enable-libfreetype
 --enable-avresample --enable-libtwolame --enable-libvo-aacenc
   libavutil      52. 38.100 / 52. 38.100
   libavcodec     55. 18.102 / 55. 18.102
   libavformat    55. 12.100 / 55. 12.100
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 79.101 /  3. 79.101
   libavresample   1.  1.  0 /  1.  1.  0
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, matroska,webm, from 'Big Buck Bunny.mkv':
   Metadata:
     ENCODER         : Lavf55.12.100
   Duration: 00:09:56.46, start: 0.000000, bitrate: 309088 kb/s
     Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), bgr0, 1920x1080, SAR 1:1
 DAR 16:9, 24 fps, 24 tbr, 1k tbn, 1k tbc (default)
     Stream #0:1: Audio: flac, 48000 Hz, 5.1(side), s32 (default)
 [libvpx @ 0x16087a0] v1.1.0
 Output #0, webm, to 'Big Buck Bunny 63.webm':
   Metadata:
     encoder         : Lavf55.12.100
     Stream #0:0: Video: vp8 (libvpx), yuv420p, 1920x1080 [SAR 1:1 DAR
 16:9], q=-1--1, 200 kb/s, 1k tbn, 24 tbc (default)
 Stream mapping:
   Stream #0:0 -> #0:0 (ffv1 -> libvpx)
 Press [q] to stop, [?] for help
 frame=  360 fps=6.8 q=0.0 Lsize=     778kB time=00:00:15.00 bitrate=
 425.0kbits/s
 video:775kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 0.391042%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3161#comment:2>
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