How to gurantee lip sync in the multicasting mode

Nathan zjustc at
Wed Oct 3 13:33:17 PDT 2012

Hi Nicolas,

I also tried to put the "sync" of udpsrc or rtpsrc of the receiver to be
ture, but that will make the received video very non-smooth.  It seems that
this property has to be FALSE. 
Here is our other setting related to the gsteamer, I really am in the dark.
Hope someone can point me out some directions regarding the lipsyn in the
multicasting mode:


g_object_set(G_OBJECT(rtpbin), "latency", 200, "buffer-mode", 0, "ntp-sync",
TRUE, "use-pipeline-clock", TRUE, NULL);

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