The File Extensions Database


.HM91 File Extension

  • Developer by: VideoLAN Project Team
  • Category: Digital video and movie Files

What is an .HM91 file?

.HM91 is H.265 RAW video

The hm91 file extension is associated with the H.265 / HEVC (High Efficiency Video Coding) video compression file format introduced in 2013.

It supports resolutions up to 8192×4320, including 8K UHD and improved improved video quality at the same bit rate than its predecessor known as H.264.

The hm91 file contains RAW video data encoded with H.265.


How to open:

Use compatible tools to playback *.hm91 files.

How to convert:

Probably can be exported to other formats.

How to solve problems with HM91 files

  • Associate the HM91 file extension with the correct application. On :
    Windows: Right click on any HM91 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.HM91 files". Mac: Right click (or Ctrl-click) the HM91 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 .HM91 is H.265 RAW video. Because only the current version supports the latest HM91 file format. Search, therefore, e.g. on the VideoLAN Project Team manufacturer website after an available .HM91 is H.265 RAW video update.
  • To make sure that your HM91 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.