Media Type Registration of Payload Formats in the RTP Profile for Audio and Video Conferences
RFC 4856
Document | Type |
RFC - Proposed Standard
(February 2007; Errata)
Obsoletes RFC 3555
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Author | Stephen Casner | ||
Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 4856 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Cullen Jennings | ||
Send notices to | (None) |
Network Working Group S. Casner Request for Comments: 4856 Packet Design Obsoletes: 3555 March 2007 Category: Standards Track Media Type Registration of Payload Formats in the RTP Profile for Audio and Video Conferences 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 specifies media type registrations for the RTP payload formats defined in the RTP Profile for Audio and Video Conferences. Some of these may also be used for transfer modes other than RTP. Table of Contents 1. Introduction ....................................................2 1.1. IANA Considerations ........................................2 1.2. Terminology ................................................3 2. Registrations for "Audio/Video Profile" .........................3 2.1. Audio Type Registrations ...................................3 2.2. Video Type Registrations ..................................24 3. Changes from RFC 3555 ..........................................25 4. Security Considerations ........................................26 5. References .....................................................27 5.1. Normative References ......................................27 5.2. Informative References ....................................27 Casner Standards Track [Page 1] RFC 4856 RTP Payload Formats for Audio/Video Profile March 2007 1. Introduction This document updates the media type registrations initially specified in RFC 3555 for the Real-time Transport Protocol (RTP) payload formats defined in the RTP Profile for Audio and Video Conferences, RFC 3551 [1], as subtypes under the "audio" and "video" media types. This document does not include media type registrations for the RTP payload formats that are referenced in RFC 3551 but defined in other RFCs. The media type registrations for those payload formats are intended to be updated by including them in revisions of the individual RFCs defining the payload formats. The media type registrations specified here conform to the updated template format and procedures in RFC 4288 [2] and RFC 4855 [3]. This update makes no technical changes in the registrations. Together with RFC 4855, this document obsoletes RFC 3555. 1.1. IANA Considerations As a consequence of the generalized applicability of the media types registry as specified in RFC 4288, some changes in nomenclature are needed in the RTP Payload Format section of the registry. In the registry title "RTP Payload Format MIME types" and the introductory text, "MIME" should be changed to "media". "MIME" should be deleted from the table headings, leaving just "media type" and "subtype". This document updates the media type registrations listed below to conform to the revised registration format specified in RFC 4288 and RFC 4855, so the reference for these media types should be changed from RFC 3555 to this document. Some media type registrations contained in RFC 3555 are omitted from this document; the existing registrations for those types continue to be valid until updated by other RFCs. There are no new registrations contained here. Casner Standards Track [Page 2] RFC 4856 RTP Payload Formats for Audio/Video Profile March 2007 audio/DVI4 audio/G722 audio/G723 audio/G726-16 audio/G726-24 audio/G726-32 audio/G726-40 audio/G728 audio/G729 audio/G729D audio/G729E audio/GSM audio/GSM-EFR audio/L8 audio/L16 audio/LPC audio/PCMA audio/PCMU audio/VDVI video/nv Media type audio/L16 was initially registered via RFC 2586 for transports other than RTP. That registration is incorporated here and augmented with additional information for RTP transport. 1.2. Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [4] and indicate requirement levels for implementations compliant with this specification. 2. Registrations for "Audio/Video Profile" In the following sections, the RTP payload formats defined in the RTP Profile for Audio and Video Conferences, RFC 3551 [1], are registeredShow full document text