The File Extensions Database

.QC File Extension

  • Developer by: Valve
  • Category: 3D Image Files
  • Format: Text

What is an .QC file?

.QC is Half-Life Model Compiler Script

Script used for compiling .SMD (Studiomdl Data) ASCII-based game models into Half-Life .MDL model files; contains commands for specifying the model name, the SMD model file, the locations of materials, and other properties; compiles to an MDL file using Studiomdl, a Valve command-line utility.

The "QC" acronym stands for "QuakeC," which is the Quake scripting language used as the basis for Valve QC scripts.

NOTE: QC files are actually used by Valve's Source game engine, so they are not restricted to Half-Life models.

Programs that open Half-Life Model Compiler Script
chUmbaLum sOft MilkShape 3D
Valve Half-Life
Microsoft Notepad
Blender with Blender Source Tools plug-in
File Type 2 QuakeC Source Code File
Developer by: id Software Category: Game Files Format: Text

File written in the QuakeC programming language, which was originally used for the first-person shooter game Quake; contains syntax similar to the C programming language; used for writing game artificial intelligence and other components.

QC files can be compiled using qcc, the QuakeC compiler, which was provided to the public sometime after Quake was released. Other compilers were subsequently built that enhanced QuakeC's capabilities to include other language constructs.

Programs that open QuakeC Source Code File
id Software Quake
Microsoft Notepad

How to solve problems with QC files

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