[FFmpeg-trac] #9440(undetermined:new): timeline-free dash muxing not possible with all framerates

FFmpeg trac at avcodec.org
Sun Sep 26 05:46:32 EEST 2021

#9440: timeline-free dash muxing not possible with all framerates
             Reporter:  Gregory      |                    Owner:  (none)
  Beauregard                         |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  dash         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
Comment (by Gregory Beauregard):

 To fix ffmpeg's DASH muxer to allow all framerates I'd either like to
 modify the segment duration option to accept a RATIONAL instead of a
 duration to match how it's specified in the mpd or I'd like to add a new
 mutually exclusive option to specify the segment duration via a GOP size
 since the DASH muxer already has code that writes the framerate. The
 latter wouldn't break backwards compatibility. This would be my first
 patch for the project so I'd appreciate feedback on what direction would
 be preferred before I start working on it.

Ticket URL: <https://trac.ffmpeg.org/ticket/9440#comment:1>
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