Open M21 file

MPEG-21 video data

What is m21 file? Understanding and opening m21 files

m21 file icon Are you facing difficulties opening m21 files on your computer, or wondering exactly what m21 file is?
We've got the best software solutions for opening m21 files effortlessly.

MPEG-21 video data

An m21 file extension is related to the MPEG-21 standard created by the Moving Picture Experts Group that defines a normative open framework for end-to-end multimedia creation, delivery and consumption.

Further details

The m21 file extension is associated with the MPEG-21, a standard created by the Moving Picture Experts Group that defines a normative open framework for end-to-end multimedia creation, delivery and consumption.

The m21 file stores video data.

Open m21 file with:

QuickTime Player for Mac icon

QuickTime Player for Mac

Default media player on Mac

What file extension actually is?

Simply put, file extensions are the characters after the dot in the computer file name, so for example document-name.pdf has file extension „pdf“. This helps Windows to identify which program should be used to open the file.

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