[FFmpeg-trac] #249(avfilter:open): Fix the filter remove-logo

[FFmpeg]

#249: Fix the filter remove-logo
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             Reporter:  pbasista     |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  remove-logo  |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
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Comment (by cehoyos):

 The original idea of this filter was significantly higher quality than
 delogo iirc (see mplayer-dev-eng), the problem is that you need a nearly
 completely black ppm, iiuc.

 It is even possible that the filter works fine if the needed input is
 provided...

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/249#comment:11>
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