The File Extensions Database


.UM4 File Extension

  • Developer by: Samsung Group
  • Category: Digital video and movie Files

What is an .UM4 file?

.UM4 is Samsung Smart TV video

File extension um4 is mostly associated with some types of 4K Smart TVs developed by Samsung Company and used for the default 4K video recording format.

The um4 file stores video in 4K resolution (video is standard H.265, audio is standard AAC) captured by Samsung Smart TV television. The UM4 container is encrypted.


How to open:

As far as we know, you can only playback .um4 files on certain 4k Smart TVs from Samsung.

How to convert:

A conversion to standard video formats may be possible.

How to solve problems with UM4 files

  • Associate the UM4 file extension with the correct application. On :
    Windows: Right click on any UM4 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.UM4 files". Mac: Right click (or Ctrl-click) the UM4 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 .UM4 is Samsung Smart TV video. Because only the current version supports the latest UM4 file format. Search, therefore, e.g. on the Samsung Group manufacturer website after an available .UM4 is Samsung Smart TV video update.
  • To make sure that your UM4 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.