[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 17:42:17 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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Comment (by Balling):

 Is the fix simply changing to


 avctx->sample_aspect_ratio.den = bytestream2_get_be32(&s->gb);
 +            avctx->sample_aspect_ratio.num =
 bytestream2_get_be32(&s->gb);


 ?
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11279#comment:10>
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