A Unified Plan for Using SDP with Large Numbers of Media Flows

Document Type Expired Internet-Draft (individual)
Authors Adam Roach  , Justin Uberti  , Martin Thomson 
Last updated 2014-01-16 (latest revision 2013-07-15)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


A recurrent theme in emerging real-time communications use cases, such as RTCWEB, has been the need to handle very large numbers of media flows. Unfortunately, naive uses of SDP do not handle this case particularly well. This document describes a modest set of extensions to SDP which allow it to cleanly handle arbitrary numbers of flows while still retaining a large degree of backward compatibility with existing and non-RTCWEB endpoints.


Adam Roach (adam@nostrum.com)
Justin Uberti (justin@uberti.name)
Martin Thomson (martin.thomson@skype.net)

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