.mp21文件扩展名，.mp21文件如何打开？

.mp21

文件类型1：AXMEDIS MPEG-21 Object

文件说明：

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.

打开.mp21文件

Mac OS

　

Windows

AXMEDIS Editor

AXMEDIS Player　

Linux

其它内容

.mp21

文件类型2：MPEG-21 Multimedia File

文件说明：

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.

打开.mp21文件

Mac OS

Apple QuickTime Player　

Windows

Apple QuickTime Player　

Linux

来源：. mp21文件