Hi,

I am wondering if DASH muxer supports variable framerate.


What I have seen is that DASH and HLS behaves differently
regarding variable framerate input.


  muxer:               format:   audio delay:

  DASH:                m4s       yes
  DASH w HLS playlist: m4s       yes
  HLS muxer:           mpegts    no


in m4s the audio and video track is stored in separate .m4s files.
after some time they become out of sync.

in mpegts the audio/video track is stored in the same .ts file.
no issues with a/v sync here


The ffmpeg command is used with RTMP as input:


$ ffmpeg -listen 1 -i rtmp://127.0.0.1:1935/foo \
    -c:v copy \
    -c:a copy \
    \
    -f dash -remove_at_exit false playlist.mpd


any feedback is appreciated.




/alfred
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