[FFmpeg-trac] #6951(avfilter:new): sendcmd does not work with drawbox

[FFmpeg]

#6951: sendcmd does not work with drawbox
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             Reporter:  enzanki_ars  |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  drawbox      |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Changes (by llogan):

 * keywords:   => drawbox
 * priority:  normal => wish
 * component:  undetermined => avfilter
 * type:  defect => enhancement


Comment:

 Only filters that have "command" support can be used with sendcmd. Refer
 to the output of `ffmpeg -filters` to see a list of which filters support
 this. With filters that do support it you may be limited to specific
 options that are available for use with sendcmd.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6951#comment:1>
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