[Asterisk-video] video RTP question

[Olle E. Johansson]

20 aug 2009 kl. 16.35 skrev Gallmeier, Jonathan:

> I have a very basic question regarding how the RTP headers are  
> handled within the Asterisk video channels. I discovered that the  
> RTP headers are stripped off for the audio channels, leaving the  
> compressed audio bitstream. Adding them back in is reasonably  
> trivial in my soft phone sip bridge application that I’m writing.
>
> For video, is the same thing done? Are the RTP headers stripped off,  
> leaving only the compressed video bitstream? Is there an easy way to  
> tell Asterisk channels to leave the RTP headers intact within an  
> Asterisk channel so that I don’t have to partially parse the  
> bitstream to determine RTP header parameters when the video frame is  
> broken between multiple RTP packets? Unfortunately, I have to give  
> my smart phone RTP packets with headers. It won’t accept simple  
> video bistreams.
>

Asterisk is a multiprotocol PBX and onl a limited set of the channels  
actually use RTP. So internally, Asterisk doesn't use RTP framing at  
all.

/O