[gstreamer-bugs] [Bug 541787] New: incorrect timestamp

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-good | Ver: 0.10.17
           Summary: incorrect timestamp
           Product: GStreamer
           Version: 0.10.17
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: tomasz at grobelny.oswiecenia.net
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


In RTP Speex Depayloader (possibly others as well) buffer timestamps are
generated and not taken from RTP packets. In case of packet loss the timestamps
are incorrect. Take for example such a command for sending speech data:
$ gst-launch -v filesrc location=file.mp3 ! mad ! audioconvert ! audioresample
! capsfilter caps="audio/x-raw-int, endianness=(int)1234, signed=(boolean)true,
rate=(int)8000, channels=(int)1" ! speexenc quality=10 ! rtpspeexpay ! udpsink
host=172.16.154.1 port=9011

and for receiving:
$ gst-launch -v udpsrc port=9011 caps="application/x-rtp, clock-rate=(int)8000,
encoding-name=(string)SPEEX" ! rtpspeexdepay ! speexdec ! fakesink

For 10% packet loss and transmission that lasts 5,5 minutes on the receiving
side the last timestamp is 5 minutes. This causes huge problems when I use
alsasink instead of fakesink.


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