Signaling Media Decoding Dependency in the Session Description Protocol
RFC 5583, “Signaling Media Decoding Dependency in the Session Description Protocol”, is a Proposed Standard document published in July 2009 by T. Schierl, S. Wenger. The canonical text is published by the RFC Editor.
Abstract
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 indicated by media identification attribute(s) and media format description(s). [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 5583 is hosted at rfc-editor.org. Available in TXT,HTML.
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