.m21

File Type 1 Generic IconMPEG-21 File
File Format Standard
Usage Open manually
Rank ★ ★ ☆  Average
Description

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.

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

Open With
Windows

IconApple QuickTime Player

macOS

IconApple QuickTime Player

Updated 2007
File Type 2 Generic IconAXMEDIS MPEG-21 File
File Format Proprietary (AXMEDIS)
Usage Open manually
Rank ★ ★ ☆  Average
Description

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.

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

Open With
Windows

IconAXMEDIS Editor

IconAXMEDIS Player

Updated 2007
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