[FFmpeg-trac] #11654(undetermined:new): addtional sps/pps gets added when remuxing mxf files

[FFmpeg]

#11654: addtional sps/pps gets added when remuxing mxf files
-------------------------------------+-------------------------------------
             Reporter:  Andy         |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  mp4 avc      |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 How to reproduce:
 {{{
 % ffmpeg -i <sourcefile>.mxf -c:v copy -c:a copy -movflags +faststart
 <destfile>.mp4
 }}}

 {{{
 ffmpeg version 2025-06-02-git-688f3944ce-full_build-www.gyan.dev Copyright
 (c) 2000-2025 the FFmpeg developers
 }}}
 TestFiles:
 1920x1080i25
 AVCI1080i25.mxf     (original File)
 AVCI1080i25.mp4 (ffmpeg remux)
 AVCI1080i25.h264    (bitstream dump)

 1920x1080p25
 AVCI1080p25.mxf     (original File)
 AVCI1080p25.mp4 (ffmpeg remux)
 AVCI1080p25.h264    (bitstream dump)

 960x540p25
 LowRes.mxf     (original File)
 LowRes.mp4 (ffmpeg remux)
 LowRes.h264    (bitstream dump)


 Issue:
 In the orignal mxf files, there are sps/pps in every frame.
 When i remux these avc-files, ffmpeg always adds an additional sps/pps to
 the first frame of the file.

 In the 1920x1080 files, it containes the same profile and level indication
 but in the "lowres" file, the behaviour is even different. It adds an
 sps/pps with different profile and level which causes most players to not
 play the file.

 I just wanted to clear, if this is a bug or intended and maybe to prevent
 this by using a cmdline switch while remuxing.

 Thank you
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11654>
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