[Bug 678465] New: Some live MPEG TS streams are very slow to start playing

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=678465
  GStreamer | don't know | git

           Summary: Some live MPEG TS streams are very slow to start
                    playing
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: don't know
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: tvrtko.ursulin at onelan.co.uk
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Code from 0.10 GIT:
gstreamer 11c8ffb6fbd20081c49708cb41e0ec6e2ed09c27
-base 1f6056eafb6c37f4c78ed22b2796a1dcaeb51ee6
-good 50c85392cd0a8824b917790a12d92f237dbd55ce
-bad acf4463f2b9bf7a7cdbac288e50dfb41626fc8b2
-ugly 09284b9862504f73924d88ac00b2c7d08dd7a001
-ffmpeg 9761a6501b518a554fc5e52de8e9acdc4f8ced9a

Plus a patch to -ugly mpeg2dec to set its rank to NONE making -ffmpeg MPEG2
decoder used.

Transport stream is being multicast over UDP and played back via a command line
like gst-launch-0.10 -v playbin2 flags=0x207 uri=udp://239.192.2.203:5000.

I have tested different IPTV sources (different appliances, either DVB-T or
DVB-S sources) and interestingly BBC ONE always takes close to ten seconds to
start  playing (this is unacceptable) while BBC NEWS start in two-three seconds
tops, which is much nicer - comparable to switching stations on a TV set.

GST_DEBUG=5 log file of this slow start has 6Mb compressed.

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