[Bug 736017] New: Sequence number not monotonic in RTSP server with basepayload component

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=736017
  GStreamer | gst-plugins-base | 1.4.0

           Summary: Sequence number not monotonic in RTSP server with
                    basepayload component
    Classification: Platform
           Product: GStreamer
           Version: 1.4.0
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: panda_srimanta at yahoo.co.in
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


While using RTSP-server and g726payloader in gstreamer, sequence number is not
monotonic while going from pause to play again.

According to the RFC "both RTP sequence numbers and RTP timestamps MUST be
continuous and monotonic across jumps of NPT".

So while going from PAUSE to PLAY on live media, the sequence number generated
by the basepayloader is random. So the sequence number is not monotonically
increasing from previous play request to the next play request.

This issue is combination of both rtsp-server and basepayloader issue. In RTSP
server for pause, the pipeline is set to NULL state and in basepayloader the
sequence number is generated randomly everytime it change state from READY TO
PAUSE.

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