| File Type 1 |
MPEG-21 Multimedia File (Most common) |
| File Format |
File |
| Common? |
No |
| File Description |
Media storage format developed by the Moving Picture Experts Group (MPEG); based on a "meta-box" format that contains audio or video data referred to as the "Digital Item;" also includes metadata that describes the media.
MPEG-21 files typically use the .M21 file extension. |
| Program(s) that open mp21 files |
Mac / Windows: Apple QuickTime Player |
| File Type 2 |
AXMEDIS MPEG-21 Object |
| File Format |
Proprietary File |
| Common? |
No |
| File Description |
Media file saved in the AXMEDIS content distribution format; may contain multiple types of media, such as images, video, and audio data; may also include metadata, and DRM copy-protection information.
MP21 files are similar to .AXM files, but they used a more compressed format and can be opened more quickly; MP21 files can be created with AXMEDIS Editor and opened with AXMEDIS Player. |
| Program(s) that open mp21 files |
Windows: AXMEDIS Editor; AXMEDIS Player |
|
