Re: [rtcweb] draft-alvestrand-one-rtp-00.txt and profile
Harald Alvestrand <harald@alvestrand.no> Mon, 15 August 2011 08:32 UTC
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Date: Mon, 15 Aug 2011 10:33:38 +0200
From: Harald Alvestrand <harald@alvestrand.no>
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To: Christer Holmberg <christer.holmberg@ericsson.com>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] draft-alvestrand-one-rtp-00.txt and profile
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On 08/15/11 09:57, Christer Holmberg wrote: > Hi, > There are discussions in other SDOs about using AVPF for video and AVP > for audio, within a session. > However, those discussions are not within the context of multiplex. I added the following text: The reason for the requirement for systematic proto is that there are many combinations that don't make sense (for instance "RTP/AVPF" in one section and "RTP/SAVP" in another would make encryption and availability of TMMBR depend on the outcome of negotiation, which seems strange). The cases where combinations make sense (RTP/AVPF with UDP/FEC for instance) also usually require that separate RTP sessions be used. [[QUESTION IN DRAFT: Are there sensible combinations?]] Makes sense? > Regards, > Christer > > ------------------------------------------------------------------------ > *From:* Harald Alvestrand [mailto:harald@alvestrand.no] > *Sent:* 14. elokuuta 2011 23:15 > *To:* Christer Holmberg; rtcweb@ietf.org > *Subject:* RE: draft-alvestrand-one-rtp-00.txt and profile > > The profile affects the protocols available (such as tmmbr, or > whether it is rtp or something completely different. Some > parameters may be meaningless under a different profile. So making > profile dependent on TOGETHER support looked strange to me. Do you > see any case where different profiles would be critical? > -- > Sent from my Android phone with K-9 Mail. Please excuse my brevity. > > Christer Holmberg <christer.holmberg@ericsson.com> wrote: > > Hi Harald, > > Section 3 of the draft says that the profile of the sections MUST be the same, but there is no justification. > > Could you please explain the reason behind that MUST? > > Regards, > > Christer > >
- Re: [rtcweb] draft-alvestrand-one-rtp-00.txt and … Christer Holmberg
- Re: [rtcweb] draft-alvestrand-one-rtp-00.txt and … Harald Alvestrand
- Re: [rtcweb] draft-alvestrand-one-rtp-00.txt and … Christer Holmberg
- Re: [rtcweb] draft-alvestrand-one-rtp-00.txt and … Harald Alvestrand
- Re: [rtcweb] draft-alvestrand-one-rtp-00.txt and … Colin Perkins