[Live-devel] How to protect the RTP payload

[Francesco Matassoni]

I need to protect an RTP stream coming from VLC, so i think to make a  
program that stand in the middle between a server and a client. My program  
take the payload from the RTP packet, protect them and then retransmits it  
to another port, always by RTP. I think to use this simple architecture:  
SimpleRTPSource --> MyFilter --> SimpleRTPSink, obviously the MyFilter  
class protect the payload. I have a couple of question about this:

1) Which class i need to subclass to create the MyFilter class? The  
MultiFramedRTPSource or simple the FrameSource?
2) The data that come to the SimpleRTPSink are no more video or audio data  
but this data ecnrypted; so is it a problem for the SimpleRTPSink or it  
will work even with this non-compliant data?