RTP synchronism with rtpbin

[Antonio Marqués]

Hello,

I have been reading about RTP synchronisation and I have concluded that
sender information is necessary to properly timestamping at the receiver
side, i.e. clock-base information is necessary for jitterbuffer element.
I think I have to link jitterbuffer with filtered caps with the sender
clock-base value.

I have done some of these synchronisation by an application sending the
caps. Now I am interested in using gstrtpbin to introduce some ssrc
demuxing (included in gstrtpssrcdemux element). These gstrtpbin element
links the jitterbuffer element, so I would like to know if this linking
is done with the sender information, necessary to good synchronisation.
Otherwise, I would have to link rtpsession, rtpssrcdemux and
rtpjitterbuffer by myself.

Thanks in advanced.


--
Toni Marqués Marqués
Telefónica I+D
División de Tecnologías de Video
[hidden email]
933653188





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[Wim Taymans]

On Mon, 2009-04-20 at 12:52 +0200, Antonio Marqués wrote:

> Hello,
>
> I have been reading about RTP synchronisation and I have concluded that
> sender information is necessary to properly timestamping at the receiver
> side, i.e. clock-base information is necessary for jitterbuffer element.
> I think I have to link jitterbuffer with filtered caps with the sender
> clock-base value.
>
> I have done some of these synchronisation by an application sending the
> caps. Now I am interested in using gstrtpbin to introduce some ssrc
> demuxing (included in gstrtpssrcdemux element). These gstrtpbin element
> links the jitterbuffer element, so I would like to know if this linking
> is done with the sender information, necessary to good synchronisation.
> Otherwise, I would have to link rtpsession, rtpssrcdemux and
> rtpjitterbuffer by myself.

Yes, gstrtpbin will synchronise all related streams using RTCP messages.

Wim
>
> Thanks in advanced.
>
>


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