[FFmpeg-trac] #9611(ffmpeg:new): IMF muxing leads to non monotonically increasing dts to muxer

FFmpeg trac at avcodec.org
Mon Jan 24 19:43:22 EET 2022


#9611: IMF muxing leads to non monotonically increasing dts to muxer
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             Reporter:  FranceBB    |                    Owner:  (none)
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  ffmpeg
              Version:  git-master  |               Resolution:
             Keywords:  IMF, MXF    |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by Pierre-Anthony Lemieux):

 The PTS/DTS calculations in the imf demuxer might be incorrect: it looks
 like the PTS/DTS of the output frames should be equal to the PTS/DTS of
 the input frames minus the entry point into the input MXF file plus the
 offset of the input MXF file into the overall timeline -- like in
 concatdec.c?

 [https://github.com/FFmpeg/FFmpeg/blob/0a83ecbf48bdd591b264c3cbb70393bb518b1ecc/libavformat/imfdec.c#L802]
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Ticket URL: <https://trac.ffmpeg.org/ticket/9611#comment:3>
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