| File Type 1 |
MPEG-21 File (Most common) |
| File Format |
File |
| Common? |
No |
| File 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. |
| Program(s) that open m21 files |
Mac / Windows: Apple QuickTime Player |
| File Type 2 |
AXMEDIS MPEG-21 File |
| File Format |
Proprietary File |
| Common? |
No |
| File 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. |
| Program(s) that open m21 files |
Windows: AXMEDIS Editor; AXMEDIS Player |
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