[Live-devel] ONVIF RTSP extension : Audio Backchannel Handling

[Yuri Timenkov]

Hi Ross,

Actually the "extension" is implemented in terms of RFC 2326 by using 
"Require" header (12.32 Require).
So the question is how to get these "Require" headers from OPTIONS 
request and respond with 200 OK or 551 Option not supported.

The second part of question is how to make a track with "a:sendonly" 
attribute and accept data. The reverse media transport is part of RTP 
standard and used in SIP protocol. I suppose the only implication is 
when backchannel interleaved over TCP, but liveMedia should handle it to 
process RTCP feedback.

Best wishes,
Yuri

On 14.04.2012 12:53, Ross Finlayson wrote:
> Because - as you noted - these extensions are not part of the RTSP 
> standard, we don't support them.  Also, unfortunately, it would not be 
> possible to support them without modifying (not just subclassing) the 
> existing LIVE555 library code.  In particular, you would need to 
> reimplement the "MediaSubsession::initiate()" function.  For 
> 'backchannel' subsessions, you would need to create an appropriate 
> "RTPSink" subclass, rather than a "RTPSource" subclass that the 
> existing code always does.
>
> Ross Finlayson
> Live Networks, Inc.
> http://www.live555.com/
>
>
>
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel
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