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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The property async=TRUE on your audio and
video sinks will make the pipeline PREROLL before going to PLAYING. (They will not
go to playing until they have received the first buffer)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Havard<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Sameer Naik
[mailto:sameer.subscriptions@damagehead.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> 24. juli 2009 17:19<br>
<b><span style='font-weight:bold'>To:</span></b> Discussion of the development
of GStreamer<br>
<b><span style='font-weight:bold'>Subject:</span></b> [gst-devel] Waiting for
pipeline to preroll</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi,<br>
I am developing a audio/video application using gstreamer as the playback
backend.<br>
When i create a audio/video pipeline and set the pipeline to the PLAYING state,
a lot of times<br>
the playback does not start.<br>
<br>
Only if i set the pipeline to PAUSED, then put the application to sleep for
like 1/10th of a second.<br>
and then set the pipeline to PLAYING, everything works well. This problem
occurs only when the <br>
media has both audio and video streams. <br>
<br>
I believe this is because the pipeline is set to PLAYING before all pads are
generated and <br>
connected. i.e. before the audio and video decode and rendering bins are loaded
and connected.<br>
<br>
I think if i wait for the pipeline to PREROLL before setting it to PLAYING will
make things function correctly.<br>
Can anyone tell me how can i wait for the pipeline to PREROLL completely.<br>
<br>
Regards<br>
~Sameer<o:p></o:p></span></font></p>
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