Using Simulcast in RTP Sessions
draft-westerlund-avtcore-rtp-simulcast-02

The information below is for an old version of the document
Document Type Expired Internet-Draft (individual)
Authors Magnus Westerlund  , Bo Burman  , Morgan Lindqvist  , Fredrik Jansson 
Last updated 2013-08-29 (latest revision 2013-02-25)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-westerlund-avtcore-rtp-simulcast-02.txt

Abstract

In some applications it may be necessary to send multiple media encodings derived from the same media source in independent RTP media streams. This is called Simulcast. This document discusses the best way of accomplishing this in RTP and how to signal it in SDP. It is concluded that a solution where the different simulcast versions are based on separate SDP media descriptions provides best support for simulcast. A solution is defined by making two extensions to SDP. The first extension consists of two new attributes in SDP that express capability to send or receive simulcast streams, respectively. The second extension describes how to group media descriptions belonging to the same simulcast source by using the grouping framework.

Authors

Magnus Westerlund (magnus.westerlund@ericsson.com)
Bo Burman (bo.burman@ericsson.com)
Morgan Lindqvist (morgan.lindqvist@ericsson.com)
Fredrik Jansson (fredrik.k.jansson@ericsson.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)