Re: [rtcweb] Fwd: New Version Notification for draft-fineberg-avtext-temporal-layer-ext-00.txt

Harald Alvestrand <harald@alvestrand.no> Thu, 18 July 2013 08:17 UTC

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Date: Thu, 18 Jul 2013 10:16:50 +0200
From: Harald Alvestrand <harald@alvestrand.no>
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To: rtcweb@ietf.org, Adam Fineberg <fineberg@vline.me>
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Subject: Re: [rtcweb] Fwd: New Version Notification for draft-fineberg-avtext-temporal-layer-ext-00.txt
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On 07/18/2013 02:09 AM, Adam Fineberg wrote:
> Hi,
>
> I'm working on WebRTC services and have found that while developing 
> services that forward VP8 video streams if we want to take advantage 
> of the VP8 temporal scaling we must get the temporal layer information 
> from the RTP header which requires us to decrypt the SRTP packets. 
> This is undesirable both because the middle-box needs to have access 
> to the keys as well as the because of the added overhead of the 
> decrypt/encrypt cycle. This draft proposes an RTP header extension 
> that will allow us to use the VP8 temporal layer information included 
> in the header extension and therefore do forwarding without SRTP 
> decryption. Comments welcome.

Just checking - you named your draft with the -avtext- convention; this 
means that you want comments to go to avtext, yes?


>
> Regards,
> Adam Fineberg
> fineberg at vline.com
>
> -------- Original Message --------
> Subject: 	New Version Notification for 
> draft-fineberg-avtext-temporal-layer-ext-00.txt
> Date: 	Tue, 09 Jul 2013 10:02:05 -0700
> From: 	internet-drafts at ietf.org
> To: 	Adam Fineberg<fineberg at vline.com>
>
>
>
> A new version of I-D, draft-fineberg-avtext-temporal-layer-ext-00.txt
> has been successfully submitted by Adam Fineberg and posted to the
> IETF repository.
>
> Filename:	 draft-fineberg-avtext-temporal-layer-ext
> Revision:	 00
> Title:		 A Real-Time Transport Protocol (RTP) Header Extension for VP8 Temporal Layer Information
> Creation date:	 2013-07-08
> Group:		 Individual Submission
> Number of pages: 6
> URL:http://www.ietf.org/internet-drafts/draft-fineberg-avtext-temporal-layer-ext-00.txt
> Status:http://datatracker.ietf.org/doc/draft-fineberg-avtext-temporal-layer-ext
> Htmlized:http://tools.ietf.org/html/draft-fineberg-avtext-temporal-layer-ext-00
>
>
> Abstract:
>     This document defines a mechanism by which packets of Real-Time
>     Tranport Protocol (RTP) video streams encoded with the VP8 codec can
>     indicate, in an RTP header extension, the temporal layer information
>     about the frame encoded in the RTP packet.  This information can be
>     used in a middlebox performing bandwidth management of streams
>     without requiring it to decrypt the streams.
>
>
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