[FFmpeg-trac] #9154(undetermined:new): SVQ1 fourcc is wrong for AVI container

FFmpeg trac at avcodec.org
Mon Mar 15 17:35:46 EET 2021

#9154: SVQ1 fourcc is wrong for AVI container
             Reporter:  cecodere     |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  SVQ1,        |               Blocked By:
  Sorenson                           |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
 Summary of the bug: When using the svq1 codec and using AVI as output
 container, the fourcc output may be invalid, as it is in lower case while
 in Qt it is in upper case, so it cannot be recognized by ffdshow. VLC does
 accept both svq1 and SVQ1 as AVI fourcc.

 How to reproduce:
 % ffmpeg -y -benchmark -i foreman_cif.avi -codec:v svq1
 foreman_cif_svq1_ffmpeg.avi 2>foreman_cif_svq1_ffmpeg.avi.txt
 ffmpeg version : ffmpeg-4.4-2460-2c6f532-win32-static-xpmod-sse.7z
 built on 2021-01-02

 % ffmpeg -y -benchmark -i foreman_cif.avi -codec:v svq1 -vtag SVQ1

 See attached mediainfo exports.

Ticket URL: <https://trac.ffmpeg.org/ticket/9154>
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