m21是什么意思，m21文件怎么打开？
时间:2023-04-17 10:45 文章来源于网友投稿，仅供参考！
m21文件扩展名，m21文件怎么打开？ .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 |