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[AVT] RTCP timestamp units



Hi,
I am facing an issue in inter-stream (audio-video) synchronization between two RTP streams. The NTP-RTP timestamp correlation comes in the RTCP packets, but the RFC does not specify the units in which the NTP is to be specified. This causes a problem in calculating the audio-video synchronization.
As far as I understand, the Synchronization is not possible unless the unit of the NTP is known exactly, which can only be known after the second RTCP packet arrives (from which you can indirectly judje the NTP granularity and hence it's unit). Are there any known solutions to this problem ?
Thanks
Avinash


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