[Bug 657794] Playback does not start or is poor if pipeline is started before packets start arriving
GStreamer (bugzilla.gnome.org)
bugzilla at gnome.org
Wed Sep 7 08:58:52 PDT 2011
https://bugzilla.gnome.org/show_bug.cgi?id=657794
GStreamer | don't know | 0.10.34
Simon Farnsworth <simon.farnsworth> changed:
What |Removed |Added
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CC| |simon.farnsworth at onelan.co.
| |uk
--- Comment #13 from Simon Farnsworth <simon.farnsworth at onelan.co.uk> 2011-09-07 15:58:49 UTC ---
(In reply to comment #12)
> That said, is this (switching sources real time while the player continues
> streaming without being aware a switch happens) a use case for you ?
We need to be able to handle this, but it doesn't have to be clean - timeshared
channels (e.g. BBC THREE/BBC FOUR and CBBC Channel/CBeebies) is the use-case.
We can thus cope if GStreamer simply throws an event at us to say that things
have changed and we need to restart.
For background: the BBC (and many other broadcasters) share an encoder between
two stations. At 7:00pm, it stops encoding one station and starts on the new
one, resulting in a PTS discontinuity, as the new station will switch from
playing out a static loop to playing the encoder's output, and the old station
will switch from the encoder's output to a static loop. We don't need to follow
the switch, but we do need to stop playing and not follow the encoder to its
new service.
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