[Bug 655804] Play position advancing but frames not rendered

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Wed Aug 3 00:43:24 PDT 2011


https://bugzilla.gnome.org/show_bug.cgi?id=655804
  GStreamer | gstreamer (core) | 0.10.34

Tvrtko Ursulin <tvrtko.ursulin> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |UNCONFIRMED

--- Comment #3 from Tvrtko Ursulin <tvrtko.ursulin at onelan.co.uk> 2011-08-03 07:43:21 UTC ---

Hi,

Thanks for looking at this!

I will attach something I just hacked up which is basically the same GStreamer
usage wise as the program I initially saw the problem. You will see that the
code is pretty simple. It may have bugs since I am quite new to GStreamer and
PyGst though.

Reproducing the problem may be difficult since I suspect it depends on the
content and length of play. We found this when stress testing GStreamer (PyGst)
playing DVB-T rebroadcast over Ethernet which is one of our main use cases. I
mostly test with BBC 1 and the problem shows after a couple of hours of
streaming. Not every time though, there are different failure modes this bug is
only one of (655790 is the other one I entered so far).

I have also seen it when playing MPEG TS rebroadcast from localhost (UDP
unicast to 127.0.0.1), unfortunately program which does rebroadcasting is
proprietary. And with regards to Ethernet multicast those are proprietary
hardware appliances.

I did not manage to reproduce using GStreamer only (dvbbasebin I think is the
plugin name) since that crashes typically quite soon. Which reminds me I could
raise a bug about that as well.

Versions wise, this is with Fedora's 15 GStreamer packages plus rpmfusion.org
bad and ugly plugins. Former recompiled to include dvbsuboverlay for DVB-T
subtitles support.

Regards,

Tvrtko

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