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MP21 file extension

The table below provides useful information about the .mp21 file extension. It answers questions such as:

  • What is the .mp21 file?
  • What program do I need to open a .mp21 file?
  • How can the .mp21 file be opened, edited or printed?
  • How can I convert .mp21 files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

0 extension(s) and 1 alias(es) found in database


M21 file is an AXMEDIS MPEG21 Data. Automated Production of Cross Media Content for Multichannel Distribution (AXMEDIS) is a Framework designed to support and automatise the digital content management along the whole value chain.
M21 format description not yet available
Category: Data files
Application: AXMEDIS
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
M21 aliases:
M21 related links:
M21 related extensions:

Other types of files may also use the .mp21 file extension.

🚫 The .mp21 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

m21, mp1, mp12, mp2, p21

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

NI Multisim 12 Project
MPEG Audio Layer 1 File
Mpeg-1 Audio Layer 2 File
Express STEP Data Model

🔴 Can't open a .mp21 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .mp21 file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .mp21 file extension, write to us!

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