[FFmpeg-trac] #7927(undetermined:reopened): Video copy from mkv to mp4 causes variable frame rate from constant frame rate

[FFmpeg]

#7927: Video copy from mkv to mp4 causes variable frame rate from constant frame
rate
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             Reporter:  madsfoto     |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Balling):

 Replying to [comment:10 madsfoto]:
 > I'm the original author :) And yes, that's what a Nikon D600 produces.
 Why? No clue.

 Because ITU-R BT.470-6 System M is ideal 2.2000 gamma, I suppose. While
 sRGB is piece wise with 2.4 that gives almost 2.2 and BT.709 is more like
 1.9 gamma with needed BT.1886 correction. Even Adobe RGB 1998 transfer is
 563/256, or 2.19921875, not perfect 2.2.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7927#comment:11>
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