Hi I am using pcapparse to play out RTP stream from a pcap file and I try to rewind it on keyframe requests but I have to do it in BYTES format otherwise pcapparse is unhappy. All of this works but when it rewinds the RTP timestamp also goes back in time
The pipeline is something like this
rtpbin name=rtpbin srtpenc name=srtpenc filesrc location=apcapfile.pcap name=vidsource ! identity single-segment=true ! pcapparse name=pcapparse update-offset=1 ! application/x-rtp,clock-rate=90000 ! rtph264depay ! video/x-h264, profile=baseline, stream-format=byte-stream,alignment=au ! rtph264pay pt=112 mtu=1500 ! rtpbin.send_rtp_sink_0 rtpbin.send_rtp_src_0 ! srtpenc.rtp_sink_0 srtpenc.rtp_src_0 ! multisocketudpsink name=videosink rtpbin.send_rtcp_src_0 ! rtcp_mux.sink_0 funnel name=rtcp_mux forward-sticky-events=false ! srtpenc.rtcp_sink_0 srtpenc.rtcp_src_0 ! multisocketudpsink name=rtcpsink sync=false async=false appsrc name=videortcptx_appsrc is-live=true do-timestamp=true format=time ! rtcp_mux.sink_1
The rewind is done by
element.seek(1.0, Gst.Format.BYTES, Gst.SeekFlags.FLUSH | Gst.SeekFlags.SEGMENT,
Gst.SeekType.SET, 0, Gst.SeekType.NONE, 0)
and the pad probe is
element.seek(1.0, Gst.Format.BYTES, Gst.SeekFlags.SEGMENT, Gst.SeekType.SET, 24, SeekType.NONE, 0)
element being filesrc
On keyframe requests I see the RTP timestamp going backwards which is causing problem
I even tried the identity element in the pipeline as suggested in
http://gstreamer-devel.966125.n4.nabble.com/Problem-using-gnlcomposition-td1690011.html#a1690011That didn't help. Any suggestions is appreciated.
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