CODEWITHSUNDEEP
gstreamermp4mpeg-dash
Vladimir
Vladimir

Reputation: 31

Segmented mp4 in GStreamer

I'm have pipeline:

gst-launch-1.0 rtspsrc location=rtsp://ip/cam ! rtph264depay ! h264parse ! mp4mux fragment-duration=10000 streamable=1 ! multifilesink next-file=2 location=file-%03d.mp4

The first segment is played well, others not. When I'm try to view the structure of damaged mp4 see an interesting bug:

  1. MOOV
  2. Some data
  3. MOOF
  4. MDAT
  5. MOOF
  6. MDAT

The most interesting thing in "Some data". There is no header data, they simply exist. By block size I think it MDAT. I find size of the block and add before it MDAT header. File immediately becomes valid and playing. But the unknown piece can't be played because before it no MOOF header.

Problem is at mp4mux and qtmux. Tested on GStreamer 1.1.0 and 1.2.2. All results are identical.

Can use multifilesink not correct?

Upvotes: 1

Views: 5758

Answers (2)

CAMOBAP
CAMOBAP

Reputation: 5657

If you take look at documentation for multifilesink you will find the answer:

It is not possible to use this element to create independently playable mp4 files, use the splitmuxsink element for that instead. ...

So use splitmuxsink and don't forget to send EOS when you done to correct finish last file

Update

Looks like at time when question has been asked there wasn't such element like splitmuxsink

Upvotes: 3

thiagoss
thiagoss

Reputation: 2094

Can this be reproduced using videotestsrc instead of rtsp?

Try replacing your h264 receiving and depayloading with "videotestsrc num-buffers= ! x264enc ! mp4mux ..."

This might be a bug, please file it at https://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer so it gets proper attention from maintainers.

Also, how are you trying to play it?

Thanks

Upvotes: 0

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