How to Write an RTP Payload Format
RFC 8088

Document Type RFC - Informational (May 2017; No errata)
Updates RFC 2736
Last updated 2017-05-02
Replaces draft-ietf-avt-rtp-howto
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Ali Begen
Shepherd write-up Show (last changed 2013-10-11)
IESG IESG state RFC 8088 (Informational)
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Responsible AD Ben Campbell
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IANA IANA review state Version Changed - Review Needed
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Internet Engineering Task Force (IETF)                     M. Westerlund
Request for Comments: 8088                                      Ericsson
Updates: 2736                                                   May 2017
Category: Informational
ISSN: 2070-1721

                   How to Write an RTP Payload Format

Abstract

   This document contains information on how best to write an RTP
   payload format specification.  It provides reading tips, design
   practices, and practical tips on how to produce an RTP payload format
   specification quickly and with good results.  A template is also
   included with instructions.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 7841.

   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/rfc8088.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Westerlund                    Informational                     [Page 1]
RFC 8088               HOWTO: RTP Payload Formats               May 2017

Table of Contents

   1. Introduction ....................................................4
      1.1. Structure ..................................................4
   2. Terminology .....................................................5
      2.1. Definitions ................................................5
      2.2. Abbreviations ..............................................5
      2.3. Use of Normative Requirements Language .....................6
   3. Preparations ....................................................6
      3.1. Read and Understand the Media Coding Specification .........6
      3.2. Recommended Reading ........................................7
           3.2.1. IETF Process and Publication ........................7
           3.2.2. RTP .................................................9
      3.3. Important RTP Details .....................................13
           3.3.1. The RTP Session ....................................13
           3.3.2. RTP Header .........................................14
           3.3.3. RTP Multiplexing ...................................16
           3.3.4. RTP Synchronization ................................16
      3.4. Signaling Aspects .........................................18
           3.4.1. Media Types ........................................19
           3.4.2. Mapping to SDP .....................................20
      3.5. Transport Characteristics .................................23
           3.5.1. Path MTU ...........................................23
           3.5.2. Different Queuing Algorithms .......................23
           3.5.3. Quality of Service .................................24
   4. Standardization Process for an RTP Payload Format ..............24
      4.1. IETF ......................................................25
           4.1.1. Steps from Idea to Publication .....................25
           4.1.2. WG Meetings ........................................27
           4.1.3. Draft Naming .......................................27
           4.1.4. Writing Style ......................................28
           4.1.5. How to Speed Up the Process ........................29
      4.2. Other Standards Bodies ....................................29
      4.3. Proprietary and Vendor Specific ...........................30
      4.4. Joint Development of Media Coding Specification
           and RTP Payload Format ....................................31
   5. Designing Payload Formats ......................................31
      5.1. Features of RTP Payload Formats ...........................32
           5.1.1. Aggregation ........................................32
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