[FFmpeg-trac] #7439(avformat:new): VP9 level is not computed correctly in VP9 codec configuration (mp4)

FFmpeg trac at avcodec.org
Sun Sep 16 00:12:36 EEST 2018


#7439: VP9 level is not computed correctly in VP9 codec configuration (mp4)
-----------------------------------+--------------------------------------
             Reporter:  kqyang     |                     Type:  defect
               Status:  new        |                 Priority:  normal
            Component:  avformat   |                  Version:  git-master
             Keywords:  VP9 Level  |               Blocked By:
             Blocking:             |  Reproduced by developer:  1
Analyzed by developer:  1          |
-----------------------------------+--------------------------------------
 Summary of the bug:
 How to reproduce:
 {{{
 % ffmpeg -i input -c:v libvpx-vp9 -profile:v 0 -level 2.1 -vf scale=640:-2
 output
 ffmpeg version N-91941-gf3b430e0e4 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 7 (Debian 7.3.0-5)
   ...
 }}}

 The VPCodecConfigurationRecord in the output file contains a level of
 0x21. It should be 21 instead. See https://www.webmproject.org/vp9/mp4/.

 I am working on the fix.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7439>
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