RTP Payload Format for VP8 Video
RFC 7741

Document Type RFC - Proposed Standard (March 2016; No errata)
Last updated 2016-03-24
Replaces draft-westin-payload-vp8
Stream IETF
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IESG IESG state RFC 7741 (Proposed Standard)
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Internet Engineering Task Force (IETF)                         P. Westin
Request for Comments: 7741                                     H. Lundin
Category: Standards Track                                         Google
ISSN: 2070-1721                                                M. Glover
                                                                 Twitter
                                                               J. Uberti
                                                             F. Galligan
                                                                  Google
                                                              March 2016

                    RTP Payload Format for VP8 Video

Abstract

   This memo describes an RTP payload format for the VP8 video codec.
   The payload format has wide applicability, as it supports
   applications from low-bitrate peer-to-peer usage to high-bitrate
   video conferences.

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/rfc7741.

Copyright Notice

   Copyright (c) 2016 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.

Westin, et al.               Standards Track                    [Page 1]
RFC 7741               RTP Payload Format for VP8             March 2016

Table of Contents

   1. Introduction ....................................................3
   2. Conventions, Definitions, and Abbreviations .....................3
   3. Media Format Description ........................................4
   4. Payload Format ..................................................5
      4.1. RTP Header Usage ...........................................6
      4.2. VP8 Payload Descriptor .....................................7
      4.3. VP8 Payload Header ........................................11
      4.4. Aggregated and Fragmented Payloads ........................12
      4.5. Example Algorithms ........................................13
           4.5.1. Frame Reconstruction Algorithm .....................13
           4.5.2. Partition Reconstruction Algorithm .................13
      4.6. Examples of VP8 RTP Stream ................................14
           4.6.1. Key Frame in a Single RTP Packet ...................14
           4.6.2. Non-discardable VP8 Interframe in a Single
                  RTP Packet; No PictureID ...........................14
           4.6.3. VP8 Partitions in Separate RTP Packets .............15
           4.6.4. VP8 Frame Fragmented across RTP Packets ............16
           4.6.5. VP8 Frame with Long PictureID ......................18
   5. Using VP8 with RPSI and SLI Feedback ...........................18
      5.1. RPSI ......................................................18
      5.2. SLI .......................................................19
      5.3. Example ...................................................19
   6. Payload Format Parameters ......................................21
      6.1. Media Type Definition .....................................21
      6.2. SDP Parameters ............................................23
           6.2.1. Mapping of Media Subtype Parameters to SDP .........23
           6.2.2. Offer/Answer Considerations ........................23
   7. Security Considerations ........................................24
   8. Congestion Control .............................................24
   9. IANA Considerations ............................................24
   10. References ....................................................25
      10.1. Normative References .....................................25
      10.2. Informative References ...................................26
   Authors' Addresses ................................................28
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