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

FFmpeg trac at avcodec.org
Fri Nov 1 16:58:18 EET 2024


#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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Changes (by Balling):

 * status:  new => open

Comment:

 Right, https://issues.chromium.org/issues/40509465#comment19 I see

 So the result image is just a square and indeed if you invert how you read
 the pHYs it will be square.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11279#comment:8>
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