A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Audio/Video Transport Working Group of the IETF.
Title : RTP Payload Format for Generic Forward Error Correction
Author(s) : A. Li
Filename : draft-ietf-avt-ulp-17.txt
Pages : 44
Date : 2006-3-21
This document specifies a payload format for generic Forward
Error Correction (FEC) for media data encapsulated in RTP. It is
based on the exclusive-or (parity) operation, and it is a
generalized algorithm that includes both simple parity
protection in the baseline mode and Uneven Level Protection
(ULP) in the extended mode. The payload format described in this
draft allows end systems to apply protection using various
protection lengths and levels, in addition to using various
protection group sizes to adapt to different media and channel
characteristic. It enables complete recovery of the protected
packets or partial recovery of the critical parts of the payload
depending on the packet loss situation. This scheme is
completely backward compatible with non-FEC capable hosts. The
receivers that do not implement FEC can still work by simply
ignoring the protection data. This specification obsoletes RFC
2733 and RFC 3009.
A URL for this Internet-Draft is:
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