MJ2

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File Format
Name MJ2
Ontology
Extension(s) .mj2, .mjp2
MIME Type(s) video/mj2
LoCFDD fdd000127
PRONOM fmt/337

MJ2 (also known as Motion JPEG 2000 or Motion JPEG2000) is a video format defined by Part 3 of the JPEG 2000 standard. MJ2 supports audio as well.

Contents

Format

Like the other JPEG 2000 file formats, MJ2 files are structured as a sequence of objects called boxes. Unlike the other JPEG 2000 formats, MJ2 is based on ISO Base Media File Format. Codestreams in Motion JPEG 2000 files are JP2 codestreams, as defined for JPEG 2000.

Identifiers

The registered MIME type is video/mj2. At least one document[1] says it is video/mjp2 instead.

The preferred filename extension is .mj2. The MIME type registration lists .mjp2 as an alternate extension.

Identification

MJ2 files start with bytes 00 00 00 0c 6a 50 20 20 0d 0a 87 0a ?? ?? ?? ?? 66 74 79 70 6d 6a 70 32.

Software

Specifications

Sample files

References

  1. Part 3 Final Proposed Draft Amendment 2

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