[FFmpeg-trac] #3750(avfilter:open): Transcoding to mpeg2video when scaling produces incorrect aspect ratio with WMP

[FFmpeg]

#3750: Transcoding to mpeg2video when scaling produces incorrect aspect ratio with
WMP
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             Reporter:  cehoyos     |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  important   |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:  regression  |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  1           |
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Changes (by cehoyos):

 * analyzed:  0 => 1
 * status:  new => open
 * component:  undetermined => avfilter
 * reproduced:  0 => 1


Comment:

 Marton was able to analyze the issue, the cause is that various filters
 (including the scale filter) can change the resolution but do not update
 the AVPanScan information.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3750#comment:2>
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