[FFmpeg-trac] #7355(avcodec:new): No MJPEG input with MMAL decoder

FFmpeg trac at avcodec.org
Fri Aug 21 17:15:38 EEST 2020

#7355: No MJPEG input with MMAL decoder
             Reporter:  Serveurperso  |                    Owner:
                 Type:  enhancement   |                   Status:  new
             Priority:  wish          |                Component:  avcodec
              Version:  git-master    |               Resolution:
             Keywords:  mmal          |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |

Comment (by lgeek):

 I haven't yet checked how to submit ffmpeg patches, but I've added MJPEG
 support with this patch
 https://github.com/lgeek/FFmpeg/commit/10a7ccaceb5. For decoding directly
 from a v4l2 device I've also had to implement this, otherwise it only
 works when ffmpeg is launched for the first time after a reboot (it looks
 like the first frame read on subsequent executions is invalid, which the
 current logic in mmaldec doesn't like):

Ticket URL: <https://trac.ffmpeg.org/ticket/7355#comment:3>
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