The File Extensions Database


.JMM File Extension

  • Category: Digital video and movie Files

What is an .JMM file?

.JMM is JVC recorded multimedia data

The jmm file extension is associated with the digital cameras and digital video recorders developed by Japanese company JVC.

The jmm file stores video or multimedia data captured by JVC devices.

The JMM file format seems to be obsolete.

This jmm file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.


How to open:

Use JVC MultiMedia Navigator to open .jmm multimedia files.

How to convert:

Possibly can be converted like any other multimedia formats.

How to solve problems with JMM files

  • Associate the JMM file extension with the correct application. On :
    Windows: Right click on any JMM file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.JMM files". Mac: Right click (or Ctrl-click) the JMM file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .JMM is JVC recorded multimedia data. Because only the current version supports the latest JMM file format. Search, therefore, e.g. on the manufacturer website after an available .JMM is JVC recorded multimedia data update.
  • To make sure that your JMM file is not corrupted or virus-infected, get the file again and scan it with antivirus software.