What is MJ2?
MJ2 stands for Motion JPEG 2000 based on the ISO standards concerning MPEG-4 and JPEG 2000. Its special features are used in Digital Cinema. All features of the still Image JPEG2000 Standard are supported as far as it has its advantages. The inclusion of metadata in a MPEG conformant description allows flexibility in the choice of data types.
What is MJ2 designed for?
MJ2 was designed to overcome different limits (resolution, compression possibilities, sampling type) characteristic for previous compression standards. Modern application of MJ2 includes digital cinems, capturing in scientific purposes.
What are MJ2 special features?
- Intraframe Coding provides simple editing, individual frame access, forward/backward spool,
- encodes each frame independently using JPEG 2000 compression
- supports high resolution (4096x3112 in 35mm film equivalent)
- mathematically lossless, visual lossless and lossy compression types
- lossless compression of 16-bit images
- high efficient VBR, CBR coding
What are MJ2 advantages?
- high-quality frame-based video recording and editing
- storing video clips taken using digital still cameras
- may contain color-space information, metadata
- low memory demands
Where it can be applied?
MJ2 format is generally used in digital cameras, it can be also used in medical and satellite imagery, meteorology, military monitoring. An average user may choose MJ2 for presentations with combined audio and video streams, creating image/video archives. Special convertors allow transforming into MPEG-1/2 for the common formats Video CD, Super Video CD, DVD etc.