[FFmpeg-trac] #8909(undetermined:new): Copying an AV1 stream from an MKV container to an MP4 container changes the reported framerate

[FFmpeg]

#8909: Copying an AV1 stream from an MKV container to an MP4 container changes the
reported framerate
-------------------------------------+-------------------------------------
             Reporter:  veikk0       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by Balling):

 This happens because you original sintel.mkv is recognized as VFR by
 ffmpeg.

 ffmpeg -i C:\Users\ZAQU\Downloads\sintel.mkv -vf vfrdet -an -f null -

 I doubt it is true and it is a bug in mkv parser. Should be, at least, see
 https://trac.ffmpeg.org/ticket/4768#comment:13

 We can close #9124, because


 {{{
 Frame rate mode             : Variable
 Frame rate                  : 24.000 FPS
 Minimum frame rate          : 23.810 FPS
 Maximum frame rate          : 24.390 FPS
 }}}

 is like that on that file too. Maximum frame rate especially.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8909#comment:3>
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