Internet Engineering Task Force Audio-Video Transport WG & Others INTERNET-DRAFT D. Singer draft-singer-mjp2-00 Apple Computer July 3 2000 Expires: January 3, 2001 MIME Type Registration for Motion JPEG 2000 Status of This Memo This document is an Internet-Draft and is in full conformance with all provisions of Section 10 of RFC2026. This document is an Internet-Draft. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet- Drafts as reference material or to cite them other than as ``work in progress.'' The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. To learn the current status of any Internet-Draft, please check the ``1id-abstracts.txt'' listing contained in the Internet-Drafts Shadow Directories on ftp.is.co.za (Africa), nic.nordu.net (Europe), munnari.oz.au (Pacific Rim), ds.internic.net (US East Coast), or ftp.isi.edu (US West Coast). Distribution of this document is unlimited. Abstract This document serves to register and document the standard MIME types associated with Motion JPEG 2000 files.. 1 Introduction JPEG 2000 is a modern wavelet-based codec that is expected to be widely used for still images. Its use for motion sequences is expected to be similar to JPEG: in those environments where only a single codec is required, and JPEG 2000 is available (e.g. digital still cameras recording short motion sequences) or where frame-by- frame coding is desired (no inter-frame coding). D. Singer [Page 1] Internet Draft draft-singer-mjp2-00 July 3 2000 2 MIME Types Within WG1 of ISO there is an effort under way to define a standard file format for motion JPEG 2000 sequences. This file format permits the carriage of audio as well. Though the format is based in the MP4 format, it represents JPEG 2000 as a 'peer' coding system to MPEG-4 visual, and the only permitted visual coder in a motion Jpeg 2000 file is Jpeg 2000. Therefore, to identify this restricted usage, a new mime type is desirable. This file type is intended always to contain a video sequence, though simple audio is permitted. Therefore it falls correctly under the "video" branch of mime types. MIME media type name: video MIME subtype name: mjp2 Required parameters: none Optional parameters: none Encoding considerations: base64 generally preferred; files are binary and should be transmitted without CR/LF conversion, 7-bit stripping etc. Security considerations: None known at the time of writing Interoperability considerations: A number of interoperating implementations exist within the MPEG-4 community; and that community has reference software for reading and writing the file format. Reference software for MJP2 will also be available. Published specification: Pending (ISO/IEC 15444-3, JPEG 2000). Applications: Multimedia Additional information: Magic number(s): 12 byte string: X'0000 000C 6A50 1A1A 0D0A 870A' (for all JPEG-2000 family files) File extension(s): mj2 and mjp2 are both declared at Macintosh File Type Code(s): mjp2 is registered with Apple Person to contact for info: David Singer, singer@apple.com Intended usage: Common D. Singer [Page 2] Internet Draft draft-singer-mjp2-00 July 3 2000 Author/Change controller: David Singer, MJP2 file format editor Acknowledgments This draft has benefited greatly by contributions from many people, including Eric Edwards, Richard Clark, and Takahiro Fukuhara. Their contribution is gratefully acknowledged. D. Singer [Page 3] Internet Draft draft-singer-mjp2-00 July 3 2000 Authors' Contact Information David Singer Email: singer@apple.com Tel: +1 408 974 3162 Apple Computer, Inc. One Infinite Loop, MS:302-3MT Cupertino CA 95014 USA D. Singer [Page 4]