[FFmpeg-trac] #11279(avcodec:open): Aspect ratio defined by the PNG resolution chunk “pHYs” is misinterpreted as its reciprocal

[FFmpeg]

#11279: Aspect ratio defined by the PNG resolution chunk “pHYs” is misinterpreted
as its reciprocal
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             Reporter:  goodbye     |                    Owner:  (none)
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  png         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by goodbye):

 Yes, it's sufficient to swap {{{num}}} and {{{den}}}.  And probably swap
 them in the encoder too.  And ensure the test suite covers this.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11279#comment:11>
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