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 : An RTP Payload Format for Generic FEC with Uneven
Level Protection
Author(s) : A. Li et al.
Filename : draft-ietf-avt-ulp-00.txt
Pages :
Date : 15-Nov-00
This document specifies a payload format for generic forward error
correction to achieve uneven level protection (ULP) of media
encapsulated in RTP. It is an extension to the forward error correction
scheme specified in RFC 2733 [1], and it is also based on the
exclusive-or (parity) operation. The payload format allows end systems
to transmit using arbitrary protection length and levels, in additional
to using arbitrary block lengths. It also allows for the both complete
recovery of the critical payload and RTP header fields, and partial
recovery when complete recovery is not possible due to the packet lost
situation. This scheme is backward compatible with non-FEC capable
hosts, and hosts that are only capable of FEC schemes specified in
RFC2733 [1], so that receivers which do not wish to implement ULP
forward error correction can just ignore the extensions.
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