alphabetical list of extensions

File extension .DEM

File description

A game replay file made by a different first person shooting video games and on the whole by the famous Counter Strike (Valve’s Source game engine supported). It stores a video game recording from one person’s perspective in a single player or multiplayer game mode, and is utilized for showing replays to others. For playing a Counter Strike the .DEM file for is used by the Windows OS, put the file in cstrikeinstallation path. Now, start the game and open console window. Here type viewdemo demofilename, “where demofilename” is the name of the file without DEM extension.

DEM format files are moreover used by Unreal Tournament, Quake, and Hexen II. But, these files can only be played on the video game through which the demo was initially created. The DEM format files made by Source engine games like Counter Strike may be opened using VirtualDub for playing the video frame sequence and recording it to other file formats like AVI.

Description of the problem

If you have on your computer a .DEM file that you cannot open, you are in exactly the same situation as thousands of other people who have similar problems with this or any other unknown file.

There may be several reasons why you cannot open the file with .DEM extension. Directly on this website you can find a solution of the most common problem with the .DEM file – that you do not have on your computer the appropriate program to open the file.

Solution

From the list below, select the appropriate program, install it and double click on the icon of a file that did not want to open - the problem with the .DEM file extension should be solved. However, if this does not happen, go back to the website to learn about other possible causes of the error, which have been described at the bottom of the website.

Other possible reasons why your .DEM file does not want to open

In addition to the problem described above, i.e. the lack of the appropriate application to support the .DEM file, there may be several reasons that cause problems with opening and operation of the data format:

1. Incorrect version of the installed application

A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .DEM file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .DEM file, so download the update and check again.

2. Incorrect .DEM file association with the program

If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:

Right-click the .DEM file
Go to the "Open with" - then "Choose default program ..."
Locate the appropriate application
Click "OK"

3. The file is corrupt

It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.