streaming - Gstreamer. Multiple pcap to avi -


i have multiple .pcap files 01.pcap, 02.pcap,...n.pcap, includes 2 streams, audio-g.711 video-h.264. every pcap has ~1 min of streaming , need make 1 .avi. use mergecap.exe concatenate pcaps 1 big pcap.

mergecap.exe -f pcap 01.pcap 02.pcap ....n.pcap -w out.pcap

after use gstreamer make .avi file

gst-launch-1.0 filesrc location=out.pcap ! tee name=t ! pcapparse dst-ip=192.168.2.55 dst-port=5010 ^         ! application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)h264, payload=(int)96 ^         ! rtpjitterbuffer ^         ! rtph264depay ^         ! h264parse ^         ! queue^         ! mux. t. ! pcapparse dst-ip=192.168.2.55 dst-port=4010 ^         ! application/x-rtp, media=(string)audio, clock-rate=(int)8000, encoding-name=(string)pcma, channels=(int)1, payload=(int)8 ^         ! rtpjitterbuffer ^         ! rtppcmadepay ^         ! queue ^         ! mux. avimux name=mux ! filesink location=test.avi

this pipeline works 1 pcap well.. when conatenate 2 .pcaps, it's works too. if more 2 pacaps-> rtpjitterbuffer drops every video packet

...

    0:00:03.856698538 12812   08e3fd28 warn         rtpjitterbuffer gstrtpjitterbuffer.c:2163:gst_rtp_jitter_buffer_chain:<rtpjitterbuffer0> packet #41238 late #57525 popped, dropping     0:00:03.861442222 12812   08e3fd28 warn         rtpjitterbuffer gstrtpjitterbuffer.c:2163:gst_rtp_jitter_buffer_chain:<rtpjitterbuffer0> packet #41239 late #57525 popped, dropping     0:00:03.870865810 12812   08e3fd28 warn         rtpjitterbuffer gstrtpjitterbuffer.c:2163:gst_rtp_jitter_buffer_chain:<rtpjitterbuffer0> packet #41240 late #57525 popped, dropping     0:00:03.876392403 12812   08e3fd28 warn         rtpjitterbuffer gstrtpjitterbuffer.c:2163:gst_rtp_jitter_buffer_chain:<rtpjitterbuffer0> packet #41241 late #57525 popped, dropping  , continues... , continues... , continues...

...

i trying :

  • change latency in rtpjitterbuffer
  • remove rtpjitterbuffer
  • don't use tee

your suggestions why happening? remind works 2 pcap's. no matter pcaps 1 2 or 5 6 or ...

upd. tried play queues otopolsky described still did not works. put queue after tee element. same error. think that's because rtpjitterbuffer in 2 different threads uses in same variable (from main thread?)

maybe there way make audio , video synchronized pcap's rtp timestamp's?

i think on 80% problem not put queue before processing of each tee branch.. when rtpjitterbuffers in 1 thread may lock each other. best guess put queue right after pcapparse or maybe before completly sure:

gst-launch-1.0 filesrc ! tee name=t    avimux name=mux ! filesink location=test.avi   t. ! pcapparse ! x-rtp caps ! queue ! rtpjitterbuffer ! rtph264depay ! h264parse ! mux.   t. ! pcapparse ! x-rtp caps ! queue ! rtpjitterbuffer ! rtppcmadepay ! mux.   t. ! pcapparse ! x-rtp caps ! queue ! rtpjitterbuffer ! rtpwhateverelse .. ! mux.

you may play position of queue or put more queue. remember queue used not buffering purpose separate processing different threads - nicely written here - check nice picture @ beginning depicting threads.

hth - hope answer.. if not update question or ask in comment.


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