I-D ACTION:draft-ietf-avt-rtcp-feedback-05.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, N. Sato
	Filename	: draft-ietf-avt-rtcp-feedback-05.txt
	Pages		: 50
	Date		: 2003-3-4
	
Real-time media streams that use RTP are not 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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