Re: [AVT] [Fwd: I-D Action:draft-schierl-avt-rtp-ntp-for-layered-codecs-00.txt]

I've also submitted draft-perkins-avt-rapid-rtp-sync-01.txt. This  
describes a similar mechanism to Thomas' draft, and is based on a  
suggestion from Dave Singer that the a similar mechanism previously  
defined by ISMA could be of use for the layered codec synchronisation  
problem.

Colin

On 15 Jan 2009, at 17:07, Thomas Schierl wrote:
> Dear all,
>
> Please find attached submission of draft-schierl-avt-rtp-ntp-for- 
> layered-codecs-00 proposing a NTP header extension carrying the NTP  
> timestamp in a backward-compatible way to be used with timestamp- 
> based decoding order recovery in layered codecs.
>
> Thomas
>
>
> -- 
> Thomas Schierl
> --------------
> Fraunhofer HHI
>
>
>
>
>
> ----
> Visit us at
>
> FOE 2009 / Tokyo Big Sight, Japan / 21-23 January 2009 / Hall west,  
> Booth 6-1
> http://www.foe.jp/en/
>
> Photonics West / San Jose Convention Center / 24-29 January 2009 /  
> Booth 1801
> http://spie.org
>
>
>
>
>
>
> From: Internet-Drafts@ietf.org
> Date: 15 January 2009 16:15:03 GMT
> To: i-d-announce@ietf.org
> Subject: I-D Action:draft-schierl-avt-rtp-ntp-for-layered- 
> codecs-00.txt
> Reply-To: internet-drafts@ietf.org
>
>
> A New Internet-Draft is available from the on-line Internet-Drafts  
> directories.
>
> 	Title           : RTP NTP header extension for decoding order  
> recovery in layered codecs
> 	Author(s)       : T. Schierl
> 	Filename        : draft-schierl-avt-rtp-ntp-for-layered-codecs-00.txt
> 	Pages           : 12
> 	Date            : 2009-01-15
>
> This memo describes an RTP header extension mechanism to be used
> with timestamp-based decoding order recovery of RTP flows containing
> layered codecs.  The header extension may be most useful in the
> presence of clock skew as well as for early decoding order recovery.
> The RTP header extension is based on [RFC5285] and extends the RTP
> header by the lower 56bit part of the NTP timestamp corresponding to
> the RTP timestamp of the same packet as defined in [RFC3550] for the
> RTCP sender reports.  This memo further gives guidance on how
> decoding order is recovered in RTP flows using the NTP timestamp
> information when parts of a layered, multi-view or multi-
> descriptions coding media are transported in different RTP flows.
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-schierl-avt-rtp-ntp-for- 
> layered-codecs-00.txt
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> Below is the data which will enable a MIME compliant mail reader
> implementation to automatically retrieve the ASCII version of the
> Internet-Draft.
> Content-Type: text/plain
> Content-ID: <2009-01-15080642.I-D@ietf.org>
>
> _______________________________________________
> 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
>
>
> _______________________________________________
> Audio/Video Transport Working Group
> avt@ietf.org
> https://www.ietf.org/mailman/listinfo/avt

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