[FFmpeg-trac] #9947(avfilter:new): Misbehaving Curves Filter

[FFmpeg]

#9947: Misbehaving Curves Filter
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             Reporter:  kesh        |                    Owner:  (none)
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:  curves      |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Changes (by Michael Koch):

 * version:  unspecified => git-master
 * component:  undetermined => avfilter

Comment:

 The issue is also reproducible with a FFmpeg-made input file:

 ffmpeg -f lavfi -i color=black:s=32x8,format=rgb24 -lavfi
 geq=r='X+32*Y':g='X+32*Y':b='X+32*Y',format=rgb24,datascope=s=960x288:mode=color2:format=dec,scale='2*iw':'2*ih'
 -frames 1 -y test_gray.png

 ffmpeg -i test_gray.png -vf "curves=m='0.0/0.0
 0.027450980392156862/0.596078431372549
 0.2549019607843137/0.9176470588235294 1.0/1.0'" out.png
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Ticket URL: <https://trac.ffmpeg.org/ticket/9947#comment:4>
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