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Title : Signaling of layered and multi description
media in Session Description Protocol (SDP)
Author(s) : T. Schierl
Filename : draft-schierl-mmusic-layered-codec-01.txt
Pages : 14
Date : 2006-10-25
This memo defines semantics that allow for signaling decoding dependency
of different media descriptions with the same media type in the Session
Description Protocol (SDP). This is required, for example, if media
data is separated and transported in different network streams as a
result of the use of a layered media coding process.
A new grouping type "DDP" -- decoding dependency -- is defined, to be
used in conjunction with RFC 3388 entitled "Grouping of Media Lines in
the Session Description Protocol". In addition, an attribute is
specified describing the relationship of the media streams in a "DDP"
group.
Finally, this memo defines SDP semantics indicating SSRC multiplexing
for media sessions in case RTP is used as the protocol for media
transport.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-schierl-mmusic-layered-codec-01.txt
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