Motion JPEG 2000

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Motion JPEG 2000
Filename extension.mj2, .mjp2
Internet media typevideo/mj2
Magic number12 byte string: X'0000 000C 6A50 2020 0D0A 870A'
Developed byJoint Photographic Experts Group
Type of formatmoving image
Container forvideo, sound
Extended fromISO base media file format
Extended toMotion JPEG 2000 Simple Profile, Motion JPEG 2000 Motion Picture Archive Preservation Format Profile, Motion JPEG 2000 Motion Picture Archive Access Format Profile
StandardISO/IEC 15444-3:2007, ITU-T T.802
Websitehttp://www.jpeg.org/jpeg2000/j2kpart3.html

Motion JPEG 2000 (MJ2 or MJP2) is a file format for motion sequences of JPEG 2000 images and associated audio, based on the MP4/QuickTime format. Filename extensions for Motion JPEG 2000 video files are .mj2 and .mjp2, as defined in RFC 3745.

ISO Standards[edit]

MJ2, first defined by Part 3 of the ISO Standard for JPEG 2000 ISO/IEC 15444 in November 2001[1] (ISO/IEC 15444-3:2002) as a standalone document, has later been defined by ISO/IEC 15444-3:2007, ISO/IEC 15444-3:2007/Amd 1:2010, additional profiles for archiving applications, and by ISO/IEC 15444-12 which defines the JPEG 2000 base media format, which contains the timing, structure, and media information for timed sequences of media data.

The standard is available for download from ITU-T as their Recommendation T.802.[2]

MPEG vs MJ2[edit]

Motion JPEG2000 was always intended to coexist with MPEG. Unlike MPEG, MJ2 does not implement inter-frame coding; each frame is coded independently using JPEG 2000. This makes MJ2 more resilient to propagation of errors over time, more scalable, and better suited to networked and point-to-point environments, with additional advantages over MPEG with respect to random frame access,[3] but at the expense of increased storage and bandwidth requirements.

See also[edit]

References[edit]

  1. ^ "Motion JPEG 2000 Part 3". Joint Photographic Experts Group, JPEG, and Joint Bi-level Image experts Group, JBIG. Archived from the original on 22 September 2012. Retrieved 21 June 2014.
  2. ^ "T.802 : Information technology - JPEG 2000 image coding system: Motion JPEG 2000". January 2005. Retrieved 21 June 2014.
  3. ^ Hunter, Jill. "Digital cinema reels from motion JPEG2000 advances". EETimes. EETimes. Retrieved 21 June 2014.

External links[edit]