Re: [rtcweb] Fwd: I-D Action: draft-lennox-rtcweb-rtp-media-type-mux-00.txt

Colin Perkins <csp@csperkins.org> Thu, 27 October 2011 15:12 UTC

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From: Colin Perkins <csp@csperkins.org>
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To: Jonathan Lennox <jonathan@vidyo.com>
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Subject: Re: [rtcweb] Fwd: I-D Action: draft-lennox-rtcweb-rtp-media-type-mux-00.txt
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Jonathan,

Thanks for submitting. This is a good draft.

One comment: Section 3.1 suggests that a source generating multiple RTP streams, with multiple SSRCs, should not send RTCP reports for its own media, and should pick a single SSRC to use when sending reports on other media. I agree that this would save a small amount of bandwidth, but I think the savings are negligible, it complicates the monitoring model, and so is a mistake. We talk about this in draft-westerlund-avtcore-multiplex-architecture-00 (Section 9, in particular).

Cheers,
Colin



On 25 Oct 2011, at 02:01, Jonathan Lennox wrote:
> Hello all --
> 
> Jonathan Rosenberg and I have written a draft (as promised at the Québec IETF) describing RTP-level procedures for multiplexing multiple media types into a single RTP session.
> 
> Comments are welcome.
> 
> Begin forwarded message:
> 
>> From: "internet-drafts@ietf.org" <internet-drafts@ietf.org>
>> Date: October 24, 2011 7:27:40 PM EDT
>> To: "i-d-announce@ietf.org" <i-d-announce@ietf.org>
>> Subject: I-D Action: draft-lennox-rtcweb-rtp-media-type-mux-00.txt
>> Reply-To: "internet-drafts@ietf.org" <internet-drafts@ietf.org>
>> 
>> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>> 
>> 	Title           : Multiplexing Multiple Media Types In a Single Real-Time Transport Protocol (RTP) Session
>> 	Author(s)       : Jonathan Lennox
>>                         Jonathan Rosenberg
>> 	Filename        : draft-lennox-rtcweb-rtp-media-type-mux-00.txt
>> 	Pages           : 11
>> 	Date            : 2011-10-24
>> 
>>  This document describes mechanisms and recommended practice for
>>  transmitting media streams of multiple media types (e.g., audio and
>>  video) over a single Real-Time Transport Protocol (RTP) session,
>>  primarily for the use of Real-Time Communication for the Web
>>  (rtcweb).
>> 
>> 
>> A URL for this Internet-Draft is:
>> http://www.ietf.org/internet-drafts/draft-lennox-rtcweb-rtp-media-type-mux-00.txt
>> 
>> Internet-Drafts are also available by anonymous FTP at:
>> ftp://ftp.ietf.org/internet-drafts/
>> 
>> This Internet-Draft can be retrieved at:
>> ftp://ftp.ietf.org/internet-drafts/draft-lennox-rtcweb-rtp-media-type-mux-00.txt
>> _______________________________________________
>> I-D-Announce mailing list
>> I-D-Announce@ietf.org
>> https://www.ietf.org/mailman/listinfo/i-d-announce
>> Internet-Draft directories: http://www.ietf.org/shadow.html
>> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
>> 
> 
> --
> Jonathan Lennox
> jonathan@vidyo.com
> 
> 
> _______________________________________________
> rtcweb mailing list
> rtcweb@ietf.org
> https://www.ietf.org/mailman/listinfo/rtcweb


-- 
Colin Perkins
http://csperkins.org/