An RTP Payload Format for Erasure-Resilient Transmission of Progressive Multimedia Streams

Document Type Expired Internet-Draft (avt WG)
Author Guenther Liebl 
Last updated 2004-10-26
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document specifies an efficient way to ensure erasure- resilient transmission of progressively encoded multimedia sources via RTP using Reed-Solomon (RS) codes together with interleaving. The level of erasure protection can be explicitly adapted to the importance of the respective parts in the source stream, thus allowing a graceful degradation of application quality with increasing packet loss rate on the network. Hence, this type of unequal erasure protection (UXP) schemes is intended to cope with the rapidly varying channel conditions on wireless access links to the Internet backbone. Furthermore, protection of non-progressive multimedia streams is ensured, since equal erasure protection (EXP) represents a subset of generic UXP. By applying interleaving and RS codes a payload format is defined, which can be easily integrated into the existing framework for RTP.


Guenther Liebl (

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