Subject: Re: [AVTCORE] I-D Action: draft-ietf-avtext-framemarking-07.txt - question

From: "Roni Even (A)" <[email-masked]>
Date: Tue, 1 May 2018 06:12:45 +0000

Hi,

At the IETF101 session there was a comment about the priority marking ratio; how does a middlebox to know the average number of frames in each priority are in the RTP flow. This is needed in order to know which priories it can drop when congested.

My assumption, which I can add to the document, is that it is done based on previous ratio the middlebox sees on the wire.

That made me question how is it done in the case of scalable streams. Are all the packets with d=1 the same. If not how does a middlebox know how many there are from each frame type when it wants to address congestion?

Roni

From: avt [mailto:[email-masked]] On Behalf Of Suhas Nandakumar
Sent: Monday, April 30, 2018 6:02 PM
To: [email-masked]
Subject: Re: [AVTCORE] I-D Action: draft-ietf-avtext-framemarking-07.txt

Version 07 is just a refresh to avoid from draft expiration.

Thanks
Suhas

On Mon, Apr 30, 2018 at 7:59 AM, <[email-masked]<mailto:[email-masked]>> wrote:

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Audio/Video Transport Core Maintenance WG of the IETF.

        Title           : Frame Marking RTP Header Extension
        Authors         : Mo Zanaty
                          Espen Berger
                          Suhas Nandakumar
        Filename        : draft-ietf-avtext-framemarking-07.txt
        Pages           : 11
        Date            : 2018-04-30

Abstract:
   This document describes a Frame Marking RTP header extension used to
   convey information about video frames that is critical for error
   recovery and packet forwarding in RTP middleboxes or network nodes.
   It is most useful when media is encrypted, and essential when the
   middlebox or node has no access to the media decryption keys.  It is
   also useful for codec-agnostic processing of encrypted or unencrypted
   media, while it also supports extensions for codec-specific
   information.

The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-avtext-framemarking/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-avtext-framemarking-07
https://datatracker.ietf.org/doc/html/draft-ietf-avtext-framemarking-07

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-avtext-framemarking-07

Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org<http://tools.ietf.org>.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

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