[FFmpeg-trac] #3399(undetermined:closed): Bad output framerate decision for mp4 from camera

FFmpeg trac at avcodec.org
Wed Feb 19 18:17:00 CET 2014


#3399: Bad output framerate decision for mp4 from camera
-------------------------------------+-------------------------------------
             Reporter:  mressler     |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  fps mov      |               Resolution:  duplicate
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------

Comment (by cehoyos):

 Replying to [comment:6 mressler]:
 > The sample command you ran didn't include the -r option?

 I did not want to post a working command line but an as-simple-as-possible
 command line that allows to reproduce the problem (and avoids using an
 external library). Note that I missed the issue originally because of the
 noisy x264 output.

 The FFmpeg mov muxer only supports cfr, if your input file is vfr, frames
 are dropped and / or duplicated to produce cfr output. Knowing the correct
 frame-rate is not always easy.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3399#comment:7>
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