IETF Logo Mail Archive

Re: [rtcweb] A problem with both A and B

Christer Holmberg <christer.holmberg@ericsson.com> Thu, 23 May 2013 11:04 UTC

Return-Path: <christer.holmberg@ericsson.com>
X-Original-To: rtcweb@ietfa.amsl.com
Delivered-To: rtcweb@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D6B6321F96C1 for <rtcweb@ietfa.amsl.com>; Thu, 23 May 2013 04:04:15 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -5.81
X-Spam-Level:
X-Spam-Status: No, score=-5.81 tagged_above=-999 required=5 tests=[AWL=-0.161, BAYES_00=-2.599, HELO_EQ_SE=0.35, J_CHICKENPOX_14=0.6, RCVD_IN_DNSWL_MED=-4]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id yfdljIbWBAXV for <rtcweb@ietfa.amsl.com>; Thu, 23 May 2013 04:04:09 -0700 (PDT)
Received: from mailgw7.ericsson.se (mailgw7.ericsson.se [193.180.251.48]) by ietfa.amsl.com (Postfix) with ESMTP id 16ED321F9633 for <rtcweb@ietf.org>; Thu, 23 May 2013 04:04:08 -0700 (PDT)
X-AuditID: c1b4fb30-b7f8a6d000001a2d-de-519df7a7c1b9
Received: from ESESSHC001.ericsson.se (Unknown_Domain [153.88.253.125]) by mailgw7.ericsson.se (Symantec Mail Security) with SMTP id 71.51.06701.7A7FD915; Thu, 23 May 2013 13:04:08 +0200 (CEST)
Received: from ESESSMB209.ericsson.se ([169.254.9.167]) by ESESSHC001.ericsson.se ([153.88.183.21]) with mapi id 14.02.0328.009; Thu, 23 May 2013 13:04:07 +0200
From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Emil Ivov <emcho@jitsi.org>
Thread-Topic: [rtcweb] A problem with both A and B
Thread-Index: AQHOUzwnCrd1S7QwyEqM9DOrRHv1xJkSUCmAgAAKMICAABCkAIAAARsAgAAjHBD//+3HAIAAJp6A
Date: Thu, 23 May 2013 11:04:07 +0000
Message-ID: <7594FB04B1934943A5C02806D1A2204B1C376B8B@ESESSMB209.ericsson.se>
References: <BLU403-EAS40305B2D015B786CC67EB9293AC0@phx.gbl> <CABkgnnXX3zoeKqjFxjsfMgaGGRM0JzymaeWfA13LEjUZ4tGF9Q@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B1C373EF0@ESESSMB209.ericsson.se> <519A4C9A.6020501@alum.mit.edu> <7594FB04B1934943A5C02806D1A2204B1C374F13@ESESSMB209.ericsson.se> <519BD580.7080205@alum.mit.edu> <519C86EF.5080601@ericsson.com> <519CE696.1010606@alum.mit.edu> <1447FA0C20ED5147A1AA0EF02890A64B1C2D081A@ESESSMB209.ericsson.se> <CAMRcRGRkH5evUDZUFKObWD3CjY4wGSGVHQfbLhuV6pQzDc0SJw@mail.gmail.com> <CAMvTgccWBC+4GXJ_mjYj66Lmkhc_eTtr1G3nVC1u59ya1RLgtg@mail.gmail.com> <CAMRcRGSOd7sEx71toD5PJrOS-2RhD3CtCWHP6Br+yf0YS0g8Lg@mail.gmail.com> <519DE4DE.8070508@jitsi.org> <7594FB04B1934943A5C02806D1A2204B1C376A54@ESESSMB209.ericsson.se> <519DF308.6050203@jitsi.org>
In-Reply-To: <519DF308.6050203@jitsi.org>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [153.88.183.17]
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrCLMWRmVeSWpSXmKPExsUyM+Jvre6K73MDDZ63sFis2TmBxWLtv3Z2 i51zO5gdmD12zrrL7rFkyU8mj/9vAgOYo7hsUlJzMstSi/TtErgy/uzuZC3Yx1Zx6vdZtgbG btYuRk4OCQETifVLupkgbDGJC/fWs3UxcnEICRxmlLgzZR8zSEJIYAmjRPMq+S5GDg42AQuJ 7n/aIGERAXmJ7rZFYL3MAoES7f1vWUBsYQFDid8XTjFD1BhJXFu/nwXCjpLoWDuLEcRmEVCV uPh5FzuIzSvgK9Het5UVYu8aNomPd8+BHccpoClxYPttNhCbEei476fWQC0Tl7j1ZD7U0QIS S/acZ4awRSVePv7HCnKnhICixPJ+OYhyHYkFuz+xQdjaEssWvmaG2CsocXLmE5YJjGKzkEyd haRlFpKWWUhaFjCyrGJkz03MzEkvN9/ECIyZg1t+G+xg3HRf7BCjNAeLkjhvn/bUQCGB9MSS 1OzU1ILUovii0pzU4kOMTBycUg2M/aY/rycfmbYie/80D4Wq+XrhMYJH5M0z/15Lu7PA6qbK 8SiJ6IBY+0tOnNJaty/8C7f6X/O2Iv/MLo23h/krts4/fUs0PkJSe5H1crmQO9m7/J5V5S87 Pr8he5Wu5QYt1tkTEv14dtvf+qHPuWjurdDyg3fbT/9zDROc4qf/59mqRe8sTy0/rMRSnJFo qMVcVJwIAOzBaLhnAgAA
Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] A problem with both A and B
X-BeenThere: rtcweb@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Real-Time Communication in WEB-browsers working group list <rtcweb.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/rtcweb>
List-Post: <mailto:rtcweb@ietf.org>
List-Help: <mailto:rtcweb-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 23 May 2013 11:04:16 -0000

Hi,

>>>> What if the new source produces pre-encoded stream that is not been 
>>>> negotiated within the current session ?
>>>> example: video m=line with VP8 is setup and H.264 encoded camera is 
>>>> added as new source. This needs a O/A negotiation for the 
>>>> appropriate decoder context to be setup on the receiver side
>>>
>>> Obviously this does require a new O/A but I don't see how that case is related to adding and removing SSRCs which do not require O/A exchanges.
>> 
>> It depends on whether you need to signal the SSRC to the remote endpoint for demux purpose.
>
> Exactly, and since I've been arguing that you don't ... :)

Ok. So, maybe I've missed it, but how do you suggest the received media is:

1. associated with the m- line; and
2. demuxed

Regards,

Christer

v2.23.0 | Report a Bug | By Email