[FFmpeg-trac] #4017(avfilter:new): noise filter breaks when combined with scaling

[FFmpeg]

#4017: noise filter breaks when combined with scaling
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             Reporter:  rmk         |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:  noise       |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by rmk):

 No, the result from that looks fine.

 I originally ran into this when doing the same thing in an application
 using libavfilter for the filtering and Apple APIs for encoding prores, so
 I did not think ffmpeg's prores encoder was the problem.

 The problem is also there when using v210 as a codec:

 ffmpeg -f lavfi -i testsrc=s=3840x2160 -vf
 format=pix_fmts=yuv422p10le,noise=c0s=10:allf=t -vcodec v210 -q:v 0 -t 1
 ~/tmp/noise_422p10le_v210.mov

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Ticket URL: <https://trac.ffmpeg.org/ticket/4017#comment:6>
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