Fix Media: x86-64 / GModCEFCodecFix Guide (macOS)

Visual Install Guide:

Step 1

First, close Garry's Mod.

Then open Steam, and right click Garry's Mod from your Library games list. Select Properties from the menu.

Steam > Garry's Mod > Properties

In the Properties window, select "Betas", then click on the Dropdown menu and select "x86-64 - Chromium + 64-bit Binaries"

Steam > Garry's Mod > Properties > Betas

Now you can close the properties window and wait for the update to download. Once it's done, proceed to the next step.

Download the Latest Release of GModCEFCodecFix for macOS.

GModCEFCodecFix Logo GModCEFCodecFix

Open the .dmg file (this will mount it), then drag GModCEFCodecFix into the Applications folder shortcut to install it.

Open GModCEFCodecFix-macOS.dmg Drag GModCEFCodecFix to the Applications folder

Proceed to the next step.

Run GModCEFCodecFix from your Applications folder. GModCEFCodecFix should now patch Garry's Mod. It may take some time depending on your internet connection speed.

macOS Applications Folder with GModCEFCodecFix

Once it's done, you can launch GMod from the GModCEFCodecFix window by typing "yes" and pressing Enter.

Launch GMod prompt

Congratulations, you're done! 🎉

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❓ Having Trouble?

⚙ Advanced Options

Proceed to the next step if you'd like to see Advanced Options for:

  • The Auto-mode feature

Auto-mode Feature

This enables you to use the GModCEFCodecFix as a launcher without having to confirm launching GMod when it finishes.

Create a Bash script named in the same folder as GModCEFCodecFix-macOS, containing the following:

#!/bin/bash ./GModCEFCodecFix-macOS -a 0

Mark your script as executable using its File Properties or with chmod +x. You should now be able to simply double click the script to patch GMod and then run it without prompting you.