.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.

Open over 400 file formats with File Viewer Plus.Free Download

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 Vote
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

Mac
Included with OS
Updated November 7, 2007

Verified by FileInfo.com

The FileInfo.com team has independently researched all file formats and software programs listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.