MP21 files exist as 2 different types. Please find information about each of them below.
Type 1: AXMEDIS MPEG-21 Object
General Information
| Title | MP21 File Extension |
| Extension | .mp21 |
| Full Form | AXMEDIS MPEG-21 Object |
| File Type | Multimedia File |
| Developer | AXMEDIS Consortium |
| MIME Type | application/mp21 |
File Function
| Primary Function | Package multimedia |
| Additional Functions | Digital rights management |
| Features | Interoperable, Scalable |
File Characteristics
| Quality | High versatility |
| Supports Layers | N/A |
| Supports Transparency | N/A |
| Editable | Yes, with tools |
Use Cases
| Multimedia Content Distribution | Yes |
| Protected Content Delivery | Yes |
| Cross-media | Yes |
Security and Practices
| Security Risks | DRM circumvention |
| Best Practices | DRM compliance, Secure exchange |
Historical/Version Information
| Initial Release | Early 2000s |
| Latest Version | Aligned with MPEG-21 updates |
Associated Types
| Similar Extensions | .m21, .mp4, .xml |
Software Compatibility
| Software | Usage Policy | OS Compatibility |
|---|---|---|
 AXMEDIS Editor |
Free, Proprietary | Windows |
| AXMEDIS Mobile Player |
Free | Android, iOS |
Type 2: MPEG-21 Multimedia File
General Information
| Title | MPEG-21 File Extension |
| Extension | .mp21 |
| Full Form | MPEG-21 Multimedia File |
| File Type | Multimedia Framework File |
| Developer | Moving Picture Experts Group (MPEG) |
| MIME Type | application/mp21 |
File Function
| Primary Function | Multimedia content distribution |
| Additional Functions | Rights expression, Digital Item declaration |
| Features | Interoperability, Adaptability |
File Characteristics
| Quality | High, Scalable |
| Supports Layers | Yes |
| Supports Transparency | N/A |
| Editable | Yes |
Use Cases
| Digital Libraries | Yes |
| E-commerce | Yes |
| E-learning | Yes |
| Digital Broadcast | Yes |
Security and Practices
| Security Risks | DRM restrictions |
| Best Practices | License management, Content integrity |
Historical/Version Information
| Initial Release | 2001 |
| Latest Version | MPEG-21:2019 |
Associated Types
| Similar Extensions | .mp4, .m4a, .m4v, .mpd |
Software Compatibility
| Software | Usage Policy | OS Compatibility |
|---|---|---|
 VLC Media Player |
Free | Windows, Mac, Linux, Unix |
| MPEG-21 Tools |
Varies | Varies |