RTP Payload Format for VP8 Video
RFC 7741
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Type |
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RFC - Proposed Standard
(March 2016; No errata)
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Last updated |
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2016-03-24
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Replaces |
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draft-westin-payload-vp8
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IETF
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plain text
html
pdf
htmlized
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Ali Begen
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Shepherd write-up |
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Show
(last changed 2015-09-09)
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| IESG |
IESG state |
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RFC 7741 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Ben Campbell
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IESG note |
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Ali Begen (abegen@cisco.com) is the document shepherd.
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Send notices to |
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(None)
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| IANA |
IANA review state |
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IANA OK - Actions Needed
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IANA action state |
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RFC-Ed-Ack
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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
Westin, et al. Standards Track [Page 2]
RFC 7741 RTP Payload Format for VP8 March 2016
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