|Internet media type|
|Magic number||12 byte string: X'0000 000C 6A50 2020 0D0A 870A'|
|Developed by||Joint Photographic Experts Group|
|Type of format||moving image|
|Container for||video, sound|
|Extended from||ISO base media file format|
|Extended to||Motion JPEG 2000 Simple Profile, Motion JPEG 2000 Motion Picture Archive Preservation Format Profile, Motion JPEG 2000 Motion Picture Archive Access Format Profile|
|Standard||ISO/IEC 15444-3:2007, ITU-T T.802|
See also: JPEG 2000 § Motion JPEG 2000
MJ2, first defined by Part 3 of the ISO Standard for JPEG 2000 ISO/IEC 15444 in November 2001 (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.
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, but at the expense of increased storage and bandwidth requirements.