Re: [rtcweb] SDP and ssrc-group,

"Timothy B. Terriberry" <tterriberry@mozilla.com> Thu, 23 October 2014 01:22 UTC

Return-Path: <tterriberry@mozilla.com>
X-Original-To: rtcweb@ietfa.amsl.com
Delivered-To: rtcweb@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A45421A8848 for <rtcweb@ietfa.amsl.com>; Wed, 22 Oct 2014 18:22:07 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -3.288
X-Spam-Level:
X-Spam-Status: No, score=-3.288 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_MISMATCH_ORG=0.611, HOST_MISMATCH_COM=0.311, RCVD_IN_DNSWL_MED=-2.3, T_RP_MATCHES_RCVD=-0.01] autolearn=ham
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2KLl4ioG_a4b for <rtcweb@ietfa.amsl.com>; Wed, 22 Oct 2014 18:22:05 -0700 (PDT)
Received: from smtp.mozilla.org (mx1.corp.phx1.mozilla.com [63.245.216.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C6ECB1A883F for <rtcweb@ietf.org>; Wed, 22 Oct 2014 18:22:05 -0700 (PDT)
Received: from [192.168.1.119] (fs5.wan.abq.citylinkwireless.net [216.243.124.18]) (Authenticated sender: tterriberry@mozilla.com) by mx1.mail.corp.phx1.mozilla.com (Postfix) with ESMTPSA id C14FAF2363 for <rtcweb@ietf.org>; Wed, 22 Oct 2014 18:22:04 -0700 (PDT)
Message-ID: <5448583B.5090109@mozilla.com>
Date: Wed, 22 Oct 2014 18:22:03 -0700
From: "Timothy B. Terriberry" <tterriberry@mozilla.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:29.0) Gecko/20100101 Firefox/29.0 SeaMonkey/2.26
MIME-Version: 1.0
To: rtcweb@ietf.org
References: <CALiegfmH8rRyEDbJjQ=kzMv0nGC=S9gNsE7roE=kqJyVcfgy8g@mail.gmail.com> <CAJrXDUHekuQCLeCYzsnm8AuTUgiVppQHUqR7MKdQ9Q=eFFAy0w@mail.gmail.com> <CALiegfm_B5KfD5SBPzsH4YYuzD2OXdu47TtatPVmd6ihrMCh1A@mail.gmail.com> <CAJrXDUF-AXcDuQmYhH91vbgPAxLkYkB==GY9opoRk7zrEP8A7A@mail.gmail.com> <CALiegfmxnzZ6_3rKX0paNhHas6Emvu1Mekgb9caj9NLVSf_u+g@mail.gmail.com> <5F93BF20-03B2-4D2D-BEFC-ED91250993BD@gmail.com> <54480864.4050106@gmail.com>
In-Reply-To: <54480864.4050106@gmail.com>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
Archived-At: http://mailarchive.ietf.org/arch/msg/rtcweb/gUOmf0Sv4W4NNDfjL74Jcx9BMsc
Subject: Re: [rtcweb] SDP and ssrc-group,
X-BeenThere: rtcweb@ietf.org
X-Mailman-Version: 2.1.15
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 Oct 2014 01:22:07 -0000

Sergio Garcia Murillo wrote:
> BTW, please, please, please, let's use the sssrc-group:FEC and send the
> FEC in its own ssrc stream, so we don't have to use RED anymore..

That may be fine for video, but the added header overhead for audio is 
substantial (and there are a number of other problems that RED solves 
there, as discussed at the last meeting).