.MP21 File Extension
File Type 1AXMEDIS MPEG-21 Object
What is an MP21 file?
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.
File Type 2MPEG-21 Multimedia File
.MP21 File Association 2
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.