.M21 File Extension

.M21 File Extension

2 file types use the .m21 file extension.
File Type 1

AXMEDIS MPEG-21 File

Developer AXMEDIS
Popularity
3.0  |  3 Votes
Category Video Files
Format N/A

What is an M21 file?

Media file created with the AXMEDIS Editor; saved in a packaged content distribution format and may contain multiple types of media; may also include descriptive metadata, and DRM copy-protection information.

More Information

AXMEDIS MPEG-21 files may also be saved with an .MP21 file extension.

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Programs that open M21 files

Windows
AXMEDIS Editor
AXMEDIS Player
Updated September 22, 2008
File Type 2

MPEG-21 File

Developer N/A
Popularity
3.0  |  1 Votes
Category Video Files
Format N/A

What is an M21 file?

Multimedia file format developed by the Moving Picture Experts Group (MPEG); uses a "meta-box" format that contains time-based media, such as audio and video data, as well as metadata that describes the contents of the file.

More Information

MPEG-21 may also include DRM information for copy-protection.

Programs that open M21 files

Windows
Included with OS
Mac
Included with OS
Updated November 7, 2007

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