Re: [AVT] SDP Offer/answer in draft-ietf-avt-rfc3189bis-03

[Kazuhiro Mishima <three at sfc.wide.ad.jp>]

Hi Olivier,

Thank you for your comment.
# Sorry for this is not RTP encoding topic I think.

In this case (Offerer does not set the type), I think this session
will be finished.
If some threshold count can be enabled, finished after the threshold count time.


2009/5/6 Olivier Crête <olivier.crete at collabora.co.uk>:
> Hello,
>
> The section on SDP Offer/Answer in this draft seems a bit unclear to me.
> Even though the "encode" paramete is required, it seems to imply that it
> could not be there:
>
> "If the offerer sets a encode type on a=fmtp field, the answerer MUST
> select one encode type, and reply with selected encode type value.
>
> What if the offerer does not set an encode type?
>
> I also don't see a mecanism to negotiate the supported encode type? Can
> it be assumed that if the offerer supports an encode type, it support
> all lower resolution/framerates ? If the answer is yes, it should be
> specified. If the answer is no, I guess the answerer should remove any
> payload it can't understand?
>
>
> P.S. I'm not on the list, please keep me in CC.
>
> --
> Olivier Crête
> olivier.crete at collabora.co.uk
> Collabora Ltd
>
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