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Signaling media decoding dependency in Session Description Protocol (SDP)

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Stephan Wenger , Thomas Schierl
Last updated 2007-06-25
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
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Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This memo defines semantics that allow for signaling the 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 or multiple descriptive 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.


Stephan Wenger
Thomas Schierl

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