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Status:

PROPOSED STANDARD

Updated by:

RFC 5506,RFC 8108

Authors:

J. Ott
S. Wenger
N. Sato
C. Burmeister
J. Rey

Stream:

IETF

Source:

avt (rai)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC4585

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Abstract

Real-time media streams that use RTP are, to some degree, resilientagainst packet losses. Receivers may use the base mechanisms of theReal-time Transport Control Protocol (RTCP) to report packet receptionstatistics and thus allow a sender to adapt its transmission behaviorin the mid-term. This is the sole means for feedback and feedback-based errorrepair (besides a few codec-specific mechanisms). This documentdefines an extension to the Audio-visual Profile (AVP) that enablesreceivers to provide, statistically, more immediate feedback to thesenders and thus allows for short-term adaptation and efficientfeedback-based repair mechanisms to be implemented. This earlyfeedback profile (AVPF) maintains the AVP bandwidth constraints forRTCP and preserves scalability to large groups. [STANDARDS-TRACK]

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.