[Bug 659924] GStreamer fails to play certain MPEG-2 transport streams containing audio and private data

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=659924
  GStreamer | gst-plugins-bad | 0.10.36

--- Comment #14 from Tvrtko Ursulin <tvrtko.ursulin at onelan.co.uk> 2011-09-29 08:18:35 UTC ---
Created an attachment (id=197734)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=197734)
Pipeline diagram when subtitles are not working

Subtitle stream is detected but not connected anywhere. I guess it is all about
the timing on startup - when the first subtitle data arrives.

If I understand the "handle pads with no data" patch correctly, it will carry
on as soon as there is video and audio. Should it be made to wait for subtitles
as well?

Downside I can think of is that pipeline start will be more delayed then,
possibly for quite a while if subtitles are far in between. I wonder if that
means the real fix should be somewhere else, like always connecting in
dvbsuboverlay if subtitle stream is mentioned (assuming this is
always/continuously known from the stream), or possibly even simply if
subtitles were requested?

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