m21文件怎么看，m21文件用什么打开？
m21文件怎么看，m21文件怎么打开？用什么打开？
.m21
文件类型1：AXMEDIS MPEG-21 File
文件说明：
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.
打开.m21文件
Mac OS
Windows
AXMEDIS EditorAXMEDIS Player
Linux
其它内容
.m21
文件类型2：MPEG-21 File
文件说明：
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.
打开.m21文件
Mac OS
Apple QuickTime PlayerWindows
Apple QuickTime PlayerLinux
来源：.m21文件
m21文件 m21
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