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.DEM File Extension

File Type 1Video Game Demo File

4.3 (386 Votes)
CategoryGame Files

What is a DEM file?

A DEM file is a game replay file created by various first-person shooter games and most popularly by Counter-Strike (supported by Valve's Source game engine). DEM files are used to record a player's perspective in a single or multiplayer game, which can then be shared with others.

More Information

To play a Counter-Strike DEM file in Windows, first place it in the cstrike\ installation directory. Next, start Counter-Strike and open the console window. From the console window, type viewdemo demoname, where "demoname" is the filename without the ".dem" extension.

DEM files are also used by Hexen II, Quake, and Unreal Tournament. However, the files are only playable on the game for which the demo was created.

NOTE: DEM files created by Source engine games, such as Counter-Strike, can be opened in VirtualDub to play the video frame sequence and record it to other output formats, such as .AVI. There is a size limitation of 2 GB for AVI videos created by Valve's source engine. You can install the Apple QuickTime component to encode the .H264 codec in order to avoid the size limitation.

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Programs that open DEM files

Updated 6/3/2016

File Type 2Digital Elevation Model

3.9 (70 Votes)
CategoryGIS Files

.DEM File Association 2

Contains mapping data with elevation information; used by the US Geological Survey.

Programs that open DEM files

Updated 5/18/2012

About DEM Files

Our goal is to help you understand what a file with a *.dem suffix is and how to open it.

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