RTP Payload Format for ITU-T Rec. H.263 Video
RFC 4629

Document Type RFC - Proposed Standard (January 2007; No errata)
Obsoletes RFC 2429
Updates RFC 3555
Last updated 2013-03-02
Stream IETF
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Stream WG state (None)
Consensus Unknown
Document shepherd No shepherd assigned
IESG IESG state RFC 4629 (Proposed Standard)
Telechat date
Responsible AD Cullen Jennings
Send notices to csp@csperkins.org, magnus.westerlund@ericsson.com, roni.even@polycom.co.il
Network Working Group                                             J. Ott
Request for Comments: 4629             Helsinki University of Technology
Obsoletes: 2429                                               C. Bormann
Updates: 3555                                    Universitaet Bremen TZI
Category: Standards Track                                    G. Sullivan
                                                               Microsoft
                                                               S. Wenger
                                                                   Nokia
                                                            R. Even, Ed.
                                                                 Polycom
                                                            January 2007

             RTP Payload Format for ITU-T Rec. H.263 Video

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The IETF Trust (2007).

Abstract

   This document describes a scheme to packetize an H.263 video stream
   for transport using the Real-time Transport Protocol (RTP) with any
   of the underlying protocols that carry RTP.

   The document also describes the syntax and semantics of the Session
   Description Protocol (SDP) parameters needed to support the H.263
   video codec.

   The document obsoletes RFC 2429 and updates the H263-1998 and
   H263-2000 media type in RFC 3555.

Ott, et al.                 Standards Track                     [Page 1]
RFC 4629                H.263 RTP Payload Format            January 2007

Table of Contents

   1. Introduction ....................................................3
      1.1. Terminology ................................................3
   2. New H.263 Features ..............................................3
   3. Usage of RTP ....................................................4
      3.1. RTP Header Usage ...........................................5
      3.2. Video Packet Structure .....................................6
   4. Design Considerations ...........................................7
   5. H.263+ Payload Header ...........................................9
      5.1. General H.263+ Payload Header ..............................9
      5.2. Video Redundancy Coding Header Extension ..................10
   6. Packetization Schemes ..........................................12
      6.1. Picture Segment Packets and Sequence Ending
           Packets (P=1) .............................................12
           6.1.1. Packets that begin with a Picture Start Code .......12
           6.1.2. Packets that begin with GBSC or SSC ................13
           6.1.3. Packets that begin with an EOS or EOSBS Code .......14
      6.2. Encapsulating Follow-on Packet (P=0) ......................15
   7. Use of this Payload Specification ..............................15
   8. Media Type Definition ..........................................17
      8.1. Media Type Registrations ..................................17
           8.1.1. Registration of Media Type video/H263-1998 .........17
           8.1.2. Registration of Media Type video/H263-2000 .........21
      8.2. SDP Usage .................................................22
           8.2.1. Usage with the SDP Offer Answer Model ..............23
   9. Backward Compatibility to RFC 2429 .............................25
      9.1. New Optional Parameters for SDP ...........................25
   10. IANA Considerations ...........................................25
   11. Security Considerations .......................................25
   12. Acknowledgments ...............................................26
   13. Changes from Previous Versions of the Documents ...............26
      13.1. Changes from RFC 2429 ....................................26
      13.2. Changes from RFC 3555 ....................................26
   14. References ....................................................26
      14.1. Normative References .....................................26
      14.2. Informative References ...................................27

Ott, et al.                 Standards Track                     [Page 2]
RFC 4629                H.263 RTP Payload Format            January 2007

1.  Introduction

   This document specifies an RTP payload header format applicable to
   the transmission of video streams based on the 1998 and 2000 versions
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