[Live-devel] About transfer of RTP / RTCP

[Ross Finlayson]

> I am developing a relay system for stream data. Transfer 
> RTP / RTCP packets from the IP camera connected via Ethernet
> to the receiving system.

First, do you know about our “LIVE555 Proxy Server”: http://www.live555.com/proxyServer/ ?  It might already do what you want.


> I confirmed the source of "testRTSPClient.cpp".
> The DummySink class was able to acquire media data,
> but there was no RTP header.

That’s correct.  This is because we implement the RTP/RTCP protocol ourself, so applications do not need to see the header.

> Next I confirmed the source of "testRelay.cpp".
> I do not use the BasicUDPSink class on my system,
> but I think that you can create your own class derived
> from the MediaSink class.

If you wish to transmit the relayed packets as RTP packets, then you should use a “RTPSink” subclass, *not* a “BasicUDPSink”.  (You should also send RTCP packets, by creating a “RTCPInstance” object.)

But once again, you should check whether our “LIVE555 Proxy Server" already does what you want.


Ross Finlayson
Live Networks, Inc.
http://www.live555.com/