Forward-shifted RTP Redundancy Payload Support

Document Type Replaced Internet-Draft (individual)
Last updated 2009-03-26 (latest revision 2007-08-24)
Replaced by draft-ietf-avt-forward-shifted-red
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines a simple enhancement to RFC 2198 to support RTP sessions with forward-shifted redundant encodings, i.e., redundant data is sent before the corresponding primary data. Forward-shifted redundancy can be used to conceal losses of a large number of consecutive media frames (e.g., consecutive loss of seconds or even tens of seconds of media).


Qiaobing Xie (
Joe Schumacher (

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