Media Type Registration for the Society of Motion Picture and Television Engineers (SMPTE) Material Exchange Format (MXF)
RFC 4539

Document Type RFC - Informational (May 2006; No errata)
Was draft-edwards-mime-mxf (individual in app area)
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 4539 (Informational)
Telechat date
Responsible AD Scott Hollenbeck
Send notices to tedwards@pbs.org
Network Working Group                                         T. Edwards
Request for Comments: 4539                                           PBS
Category: Informational                                         May 2006

                    Media Type Registration for the
      Society of Motion Picture and Television Engineers (SMPTE)
                     Material Exchange Format (MXF)

Status of This Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2006).

Abstract

   This document serves to register a media type for the Society of
   Motion Picture and Television Engineers (SMPTE) Material Exchange
   Format (MXF).  MXF, defined by SMPTE 377M, is a standard wrapper
   format developed for the interchange of audiovisual material,
   including both audiovisual essence and rich metadata.

Table of Contents

   1. Introduction ....................................................2
   2. Security Considerations .........................................3
   3. IANA Considerations .............................................3
      3.1. Media Type for SMPTE Material Exchange Format (MXF) ........3
   4. References ......................................................5
      4.1. Normative References .......................................5
      4.2. Informative References .....................................5

Edwards                      Informational                      [Page 1]
RFC 4539            Media Type Registration for MXF             May 2006

1.  Introduction

   The present document registers a media type for SMPTE Material
   Exchange Format (MXF).  MXF, defined by SMPTE 377M [SMPTE377M], is a
   standard wrapper format developed for the interchange of audiovisual
   material, including both audiovisual essence and rich metadata.

   Essence is the raw video, audio, and data streams contained and
   described by MXF.  Metadata carried by MXF includes structural
   metadata and descriptive metadata.  Structural metadata relates to
   the structure and capabilities of the MXF file and is generally
   required for proper decoding.  Some examples of structural metadata
   are descriptions of essence types, information to help synchronize
   playout of audio and video, and content length.  Descriptive metadata
   gives information about the program content in the file and is not
   essential for decoding.  Some examples of descriptive metadata are
   program title, actors, and scene descriptions.  The essence in MXF
   files may itself carry data, such as vertical blanking interval data
   used for carriage of Closed Captioning and other purposes.

   MXF is an important tool in providing interoperation between
   different video systems as well as digital cinema systems.  MXF also
   aids in the development of video production and distribution
   workflows that are more efficient, multi-vendor, file based, and IT
   oriented.

   SMPTE currently has standards for the mapping of the following
   essence types to the MXF generic container: MPEG (including MPEG-1
   and MPEG-2 video streams, as well as MPEG audio), DV-DIF (Digital
   Video Digital Interface Format for the DV family of related video
   encodings), Uncompressed Pictures, SDTI-CP (Serial Digital Transport
   Interface Content Package for delivering packetized audiovisual
   content over the SDI interface), D-10 (a specialized video stream
   incorporating MPEG-2 4:2:2P@ML), D-11 (a high-definition video
   compression standard), AES3 audio, Broadcast Wave audio, and A-Law
   audio.  The flexibility of the MXF generic container allows for the
   possibility of mappings of additional essence types in the future.

   The media type defined here is needed to correctly identify MXF files
   when they are served over HTTP or other network connections, included
   in multi-part documents, indexed by operating systems and digital
   asset management systems, or used in other places where media types
   are used.

Edwards                      Informational                      [Page 2]
RFC 4539            Media Type Registration for MXF             May 2006

2.  Security Considerations

   Security requirements for the application/mxf media type are
   discussed in the IANA media type registration (Section 3.1).

3.  IANA Considerations

   The IANA has registered the media type application/mxf as specified
   in Section 3.1.  The registration uses the template present in
   [RFC4288].

3.1.  Media Type for SMPTE Material Exchange Format (MXF)

   To: ietf-types@iana.org
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