[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[AVT] Re: I-D ACTION:draft-ietf-avt-forward-shifted-red-00.txt
Hi
Read the draft and although I understand the concept I fail to realize
what is gained with forward shifted redundancy. Could you please
elaborate what the possible gain with forward shifted redundancy is,
compared to what is specified in RFC2198. As I see it both alternatives
will eventually give the same delay.
Regards
Ingemar
> -----Original Message-----
> From: avt-request at ietf.org [mailto:avt-request at ietf.org]
> Sent: den 22 september 2007 18:00
> To: avt at ietf.org
> Subject: avt Digest, Vol 41, Issue 22
>
> Send avt mailing list submissions to
> avt at ietf.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> https://www1.ietf.org/mailman/listinfo/avt
> or, via email, send a message with subject or body 'help' to
> avt-request at ietf.org
>
> You can reach the person managing the list at
> avt-owner at ietf.org
>
> When replying, please edit your Subject line so it is more
> specific than "Re: Contents of avt digest..."
>
>
> Today's Topics:
>
> 1. I-D ACTION:draft-ietf-avt-forward-shifted-red-00.txt
> (Internet-Drafts at ietf.org)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 21 Sep 2007 12:15:01 -0400
> From: Internet-Drafts at ietf.org
> Subject: [AVT] I-D ACTION:draft-ietf-avt-forward-shifted-red-00.txt
> To: i-d-announce at ietf.org
> Cc: avt at ietf.org
> Message-ID: <E1IYl9h-0004GN-Rw at stiedprstage1.ietf.org>
> Content-Type: text/plain; charset="us-ascii"
>
> A New Internet-Draft is available from the on-line
> Internet-Drafts directories.
> This draft is a work item of the Audio/Video Transport
> Working Group of the IETF.
>
> Title : Forward-shifted RTP Redundancy Payload Support
> Author(s) : Q. Xie, J. Schumacher
> Filename : draft-ietf-avt-forward-shifted-red-00.txt
> Pages : 13
> Date : 2007-9-21
>
> This document defines a simple enhancement to RFC 2198 to
> support RTP
> sessions with forward-shifted redundant encodings, i.e., redundant
> data is sent before the corresponding primary data.
> Forward-shifted
> redundancy can be used to conceal losses of a large number of
> consecutive media frames (e.g., consecutive loss of seconds or even
> tens of seconds of media).
>
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-avt-forward-shi
> fted-red-00.txt
>
> To remove yourself from the I-D Announcement list, send a
> message to i-d-announce-request at ietf.org with the word
> unsubscribe in the body of the message.
> You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce
> to change your subscription settings.
>
> Internet-Drafts are also available by anonymous FTP. Login
> with the username "anonymous" and a password of your e-mail
> address. After logging in, type "cd internet-drafts" and then
> "get draft-ietf-avt-forward-shifted-red-00.txt".
>
> A list of Internet-Drafts directories can be found in
> http://www.ietf.org/shadow.html or
> ftp://ftp.ietf.org/ietf/1shadow-sites.txt
>
> Internet-Drafts can also be obtained by e-mail.
>
> Send a message to:
> mailserv at ietf.org.
> In the body type:
> "FILE
> /internet-drafts/draft-ietf-avt-forward-shifted-red-00.txt".
>
> NOTE: The mail server at ietf.org can return the document in
> MIME-encoded form by using the "mpack" utility. To use this
> feature, insert the command "ENCODING mime" before the "FILE"
> command. To decode the response(s), you will need "munpack" or
> a MIME-compliant mail reader. Different MIME-compliant
> mail readers
> exhibit different behavior, especially when dealing with
> "multipart" MIME messages (i.e. documents which have been split
> up into multiple messages), so check your local documentation on
> how to manipulate these messages.
>
> Below is the data which will enable a MIME compliant mail
> reader implementation to automatically retrieve the ASCII
> version of the Internet-Draft.
> -------------- next part --------------
> Skipped content of type multipart/alternative
>
> ------------------------------
>
> _______________________________________________
> Audio/Video Transport Working Group
> avt at ietf.org
> https://www1.ietf.org/mailman/listinfo/avt
>
>
> End of avt Digest, Vol 41, Issue 22
> ***********************************
>
_______________________________________________
Audio/Video Transport Working Group
avt at ietf.org
https://www1.ietf.org/mailman/listinfo/avt