[FFmpeg-trac] #9454(undetermined:closed): sendcmd w/h to crop appears broken

FFmpeg trac at avcodec.org
Fri Oct 15 11:36:10 EEST 2021

#9454: sendcmd w/h to crop appears broken
             Reporter:  Jozef        |                    Owner:  (none)
  Chutka                             |
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  4.3.2        |               Resolution:  wontfix
             Keywords:  crop         |               Blocked By:
  sendcmd                            |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
Comment (by Michael Koch):

 Replying to [comment:4 Elon Musk]:

 > w/h changing is unsupported in general and in particular with overlay.

 In some cases it does work, as in this example:

 ffmpeg -f lavfi -i color=red:s=800x600 -f lavfi -i color=yellow:s=2x2
 -lavfi [1]sendcmd="2.0 scale w
 400",scale=w=200:h=200[a];[0][a]overlay=x=100:y=100 -t 5 -y out.mp4
Ticket URL: <https://trac.ffmpeg.org/ticket/9454#comment:6>
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