A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiparty Multimedia Session Control Working Group of the IETF.
Title : Forward Error Correction Grouping Semantics in Session Description Protocol
Author(s) : A. Begen
Filename : draft-ietf-mmusic-rfc4756bis-08.txt
Pages : 13
Date : 2010-04-28
The Session Description Protocol (SDP) supports grouping media lines.
SDP also has semantics defined for grouping the associated source and
Forward Error Correction (FEC)-based repair flows. However, the
semantics that were defined in RFC 4756 generally fail to provide the
specific grouping relationships between the source and repair flows
when there is more than one source and/or repair flow in the same
group. Furthermore, the existing semantics do not support describing
additive repair flows. This document addresses these issues by
introducing new FEC grouping semantics. Synchronization Source
(SSRC)-level grouping semantics are also introduced in this document
for Real-time Transport Protocol (RTP) streams using SSRC
multiplexing.
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