The File Extensions Database

.DMX File Extension

  • Developer by: Valve
  • Category: Video Files

What is an .DMX file?

.DMX is Source Filmmaker Project File

Project file created by Source Filmmaker (SFM), a program used for making 3D movies and still images for use with Valve's Source game engine; saves a 3D recording created by the user and can be comprised of game map objects, models, animations, sounds, effects, and other 3D model data; often contains a recording of actual gameplay.

SFM projects are used for making short movies and cutscenes. SFM can export, or render, projects to .TGA still images or to .AVI videos.

NOTE: Source Filmmaker can only be installed using Valve's Steam client.

Programs that open Source Filmmaker Project File
Valve Source Filmmaker

How to solve problems with DMX files

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