#4653: jpeg2000: -M 1 mode is not lossless (compared to openjpeg)
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             Reporter:  ami_stuff   |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  j2k         |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
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Comment (by cehoyos):

 There is a visual difference between the output with FFmpeg and the output
 with libopenjpeg and jasper (more - or different - artefacts with FFmpeg).

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Ticket URL: <https://trac.ffmpeg.org/ticket/4653#comment:4>
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