[FFmpeg-trac] #1933(undetermined:new): ffmpeg prores artifacts

[FFmpeg]

#1933: ffmpeg prores artifacts
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             Reporter:  rivierakid   |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  prores       |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by nichot20):

 Replying to [comment:25 rivierakid]:
 > That was not for 444 format, but I've made many test and you're right
 that it's little bit unclear :)
 >
 > Reproducing problem:
 > test.tif http://www.datafilehost.com/download-5f72f895.html
 >
 > ffmpeg -i test.tif -vcodec prores_kostya -profile 1 out.mov
 > - result is bad (artifacts)
 >

 Where are these artefacts? Not immediately obvious to me when I ran the
 test.

 With -v debug I notice several "Unknown or unsupported tag..." messages
 for the tif... might they be significant?

 > ffmpeg -i test.tif -vcodec v308 -pix_fmt yuv444p test.mov
 > ffmpeg -i test.mov -vcodec prores_kostya -profile 1 out1.mov
 > - result is OK
 >
 > Instead of x264 I'm using v308 = uncompressed 4:4:4

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1933#comment:26>
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