[FFmpeg-trac] #9372(avformat:new): MP4 demuxer breaks for edit-list and fragments

FFmpeg trac at avcodec.org
Tue Oct 19 10:31:43 EEST 2021


#9372: MP4 demuxer breaks for edit-list and fragments
-------------------------------------+-------------------------------------
             Reporter:  Ulrik        |                    Owner:  (none)
  Mikaelsson                         |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avformat
              Version:  unspecified  |               Resolution:
             Keywords:  mp4          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by Ulrik Mikaelsson):

 *ah* Given EAC-3 having much bigger frame-size than priming samples, no
 packets are dropped, but there _is_ a PTS discontinuity:


 {{{
 % ffprobe -show_packets frag.mp4 | grep pts= | gawk -F=
 '/pts=/{print($2-last); last=$2}'
 ...
 1536
 1536
 1536
 1280
 1536
 1536
 ...
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9372#comment:4>
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