Re: [AVT] SRTP with layered encoding

[Colin Perkins <csp at csperkins.org>]

On 20 Oct 2009, at 17:35, Marc Petit-Huguenin wrote:
> Jonathan Lennox wrote:
> > What I guess I don't see is why layered encoding should be treated  
> > any differently than "ordinary" multimedia, e.g. separate audio and  
> > video sessions.
>
> They share the same SSRC, so they are treated as a whole (i.e. BYE  
> and non-CNAME SDES only on base layer).  I thought that it made  
> sense to also apply SRTP (and EKT) to this sessions as a whole.


As I've said before, I'm unconvinced that using a common SSRC across  
multiple layers is a good idea. It seems to cause a lot of special  
cases for little benefit.

--
Colin Perkins
http://csperkins.org/