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Reference Picture Verification Information in the RTP Audio-Visual Profile with Feedback (AVPF)

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Jonatan Samuelsson , Muhammed Coban , Stephan Wenger
Last updated 2015-06-18 (Latest revision 2014-12-15)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document specifies an extension to the feedback messages defined in the Audio-Visual Profile with Feedback (AVPF). The new Reference Picture Verification Information (RPVI) feedback message conveys information about available reference pictures in the decoded picture buffer of a video decoder in the receiver of an RTP video stream. By including information related to Decoded Picture Hash (DPH) values, media senders and media receivers can verify that reference pictures used for prediction by the video encoder and the video decoder are aligned. It is also possible to use the RPVI feedback message to indicate that a specific reference picture has incorrect sample values (i.e. a mismatch in the DPH value between encoder and decoder) or that a specific reference picture has been lost.


Jonatan Samuelsson
Muhammed Coban
Stephan Wenger

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)