RTP Payload Format for H.264 Reduced-Complexity Decoding Operation (RCDO) Video
RFC 6185
Internet Engineering Task Force (IETF) T. Kristensen
Request for Comments: 6185 P. Luthi
Category: Standards Track TANDBERG
ISSN: 2070-1721 May 2011
RTP Payload Format for
H.264 Reduced-Complexity Decoding Operation (RCDO) Video
Abstract
This document describes an RTP payload format for the Reduced-
Complexity Decoding Operation (RCDO) for H.264 Baseline profile
bitstreams, as specified in ITU-T Recommendation H.241. RCDO reduces
the decoding cost and resource consumption of the video processing.
The RCDO RTP payload format is based on the H.264 RTP payload format.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6185.
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Kristensen & Luthi Standards Track [Page 1]
RFC 6185 H.264 RCDO RTP Payload May 2011
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Conventions Used in This Document . . . . . . . . . . . . . . 3
3. Media Format Background . . . . . . . . . . . . . . . . . . . 3
4. Payload Format . . . . . . . . . . . . . . . . . . . . . . . . 3
5. Congestion Control Considerations . . . . . . . . . . . . . . 3
6. Payload Format Parameters . . . . . . . . . . . . . . . . . . 3
6.1. Media Type Definition . . . . . . . . . . . . . . . . . . 4
7. Mapping to SDP . . . . . . . . . . . . . . . . . . . . . . . . 19
7.1. Offer/Answer Considerations . . . . . . . . . . . . . . . 20
7.2. Declarative SDP Considerations . . . . . . . . . . . . . . 20
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 20
9. Security Considerations . . . . . . . . . . . . . . . . . . . 20
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 21
11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 21
11.1. Normative References . . . . . . . . . . . . . . . . . . . 21
11.2. Informative References . . . . . . . . . . . . . . . . . . 21
1. Introduction
ITU-T Recommendation H.241 [3] specifies a Reduced-Complexity
Decoding Operation (RCDO) for use with H.264 [2] Baseline profile
bitstreams. It also specifies a bitstream constraint associated with
RCDO and a mechanism for signaling RCDO within the bitstream. The
RCDO signaling indicates that the bitstream conforms to the bitstream
constraint and that the decoder shall apply the RCDO decoding process
to the bitstream.
RCDO for H.264 offers a solution to support higher resolutions at the
same high frame rates used in current implementations. This is
achieved by reducing the processing requirements and thus reducing
the decoding cost/resource consumption of the video processing.
This document defines media type parameters and allows use in systems
based on the Session Description Protocol (SDP) [8] for signaling.
Kristensen & Luthi Standards Track [Page 2]
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