Re: [AVT] SRTP with layered encoding

[Marc Petit-Huguenin <petithug at acm.org>]

Colin Perkins wrote:
> Sure - I'm all for deprecating that.

OK.  How do you suggest to proceed?  draft-ietf-avt-rapid-rtp-sync could be a
good place for this, but I am willing to write an I-D if needed.

Thanks.

> 
> Colin
> 
> 
> On 20 Oct 2009, at 20:45, Marc Petit-Huguenin wrote:
>> Probably, but isn't this what RFC 3550 section 8.3 says?
>>
>> Colin Perkins <csp at csperkins.org> wrote:
>>
>>> 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.

-- 
Marc Petit-Huguenin
Personal email: marc at petit-huguenin.org
Professional email: petithug at acm.org
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