I-D ACTION:draft-ietf-avt-rtcp-feedback-07.txt

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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		: Extended RTP Profile for RTCP-based Feedback(RTP/AVPF)
	Author(s)	: J. Ott, S. Wenger et al.
	Filename	: draft-ietf-avt-rtcp-feedback-07.txt
	Pages		: 51
	Date		: 2003-6-11
	
Real-time media streams that use RTP are, to some degree, resilient 
against packet losses.  Receivers may use the base mechanisms of 
RTCP to report packet reception statistics and thus allow a sender 
to adapt its transmission behavior in the mid-term as sole means 
for feedback and feedback-based error repair (besides a few codec-
specific mechanisms).  This document defines an extension to the 
Audio-visual Profile (AVP) that enables receivers to provide, 
statistically, more immediate feedback to the senders and thus 
allow for short-term adaptation and efficient feedback-based repair 
mechanisms to be implemented.  This early feedback profile (AVPF) 
maintains the AVP bandwidth constraints for RTCP and preserves 
scalability to large groups.

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