[gst-devel] gstreamer dvb a/v sync problem

[Ankur Sharma]

Hello,

I am facing a similar problem. After some debugging, the exact problem I found was:


 1.  The resynchronization of the Demux Clock using PCR is not happening.  Is there any problem with this part of the gstClock code? I am not sure if the add_clock_observation function works fine?

Could anyone throw some light on this?

Regards
Ankur Sharma



________________________________
From: Volter Yen [mailto:volter619 at 163.com]
Sent: Thursday, September 25, 2008 1:27 PM
To: gstreamer-devel at lists.sourceforge.net
Subject: [gst-devel] gstreamer dvb a/v sync problem

hi all,
   when  using gstreamer to play dvb signal, if I set the osssink's sync to true,  the pipelie give 'Unexpected discontinuity in audio timestamps of more than half a second(...) resyncing ' and stalled there....but it is said that 'sync=true ' should work , my gstreamer core is 0.10.14,fluendo-mpegdmuex-0.10.15, and by the way my pipelie is:
    gst-launch-0.10 dvbsrc modulation="QAM 64" trans-mode=8k bandwidth=8 freq=474000000 code-rate-lp=2/3 code-rate-hp=1/2 guard=8 hierarchy=NONE pids=630:512:128 ! flutsdemux es-pids=650:512 name=demuxer demuxer. ! queue ! mad ! audioconvert ! osssink
    and if i add 'sync=false' to ossink , it works but when play with video the audio is heavy lagged.

     I have referrenced to this link https://core.fluendo.com/gstreamer/trac/ticket/46, it seems that these problem should have been resolved.
     anybody know the way out? thank you

     Volter

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