[FFmpeg-trac] #9693(avcodec:open): change of matrix cannot happen on full range

FFmpeg trac at avcodec.org
Thu Jun 16 00:37:59 EEST 2022

#9693: change of matrix cannot happen on full range
             Reporter:  Balling     |                    Owner:  martin@…
                 Type:  defect      |                   Status:  open
             Priority:  important   |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
Changes (by Balling):

 * keywords:  zscale =>
 * component:  swscale => avcodec


 >forcing -vf scale does not work

 Forcing does work now!! I did preserve the version I used when opening the
 bug, it was broken (04cc7a5548fa22241a2d6bb4f719fe8e0e0843f1). Why no one
 notified me?

 Anyway, we still need to support automatic forcing of it for jpeg that
 only supports bt.601.

 ffmpeg.exe  -i "this one does it.mp4" -vf scale=out_color_matrix=smpte170m
 -frames:v 1 -q:v 1 3182821211.jpg

 Changing component since it is now not in swscale.
Ticket URL: <https://trac.ffmpeg.org/ticket/9693#comment:8>
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