How to download and run MP4Fix?

MP4Fix is a single portable command-line file. Download the version for your computer and run it from the terminal/command line - there is nothing to install.

Download Links

• Windows (Intel or AMD processor, most PCs): mp4fix-windows-x64.exe

• Windows (ARM processor): mp4fix-windows-arm64.exe

• macOS (Apple Silicon or Intel): mp4fix-macos.zip

Note

Not sure which Windows version to pick? Most PCs use an Intel or AMD processor, so mp4fix-windows-x64.exe is the right choice. Choose mp4fix-windows-arm64.exe only if your PC is a Windows on ARM device.

Windows Setup

1. Download mp4fix-windows-x64.exe and put it in a convenient folder, for example C:\Tools.

2. Open PowerShell (open the Start menu and type powershell).

3. Go to the folder:

cd C:\Tools

4. Confirm MP4Fix runs by showing its version:

.\mp4fix-windows-x64.exe version
mp4fix 1.0.2  (build 29c722a, 2026-08-07)

Note

The .\ in front of the file name is required - PowerShell does not run programs from the current folder without it. See Why does PowerShell say mp4fix is not recognized? for details.

Note

If Windows shows a SmartScreen message the first time you run the file, see Why does Windows or macOS show a security prompt when I run MP4Fix?.

The commands in the examples use mp4fix-windows-x64.exe. If you downloaded the ARM version, type mp4fix-windows-arm64.exe instead.

macOS Setup

1. Download mp4fix-macos.zip and double-click it to unzip. You get a single file named mp4fix-macos.

2. Open Terminal (Applications -> Utilities -> Terminal).

3. Go to the folder and allow the file to run - this is only needed once:

cd ~/Downloads
chmod +x mp4fix-macos

4. Confirm MP4Fix runs by showing its version:

./mp4fix-macos version
mp4fix 1.0.2  (build 29c722a, 2026-08-07)

Note

The ./ in front of the file name is required - Terminal needs it for programs in the current folder.

Note

If macOS shows a security dialog the first time you run the file, see Why does Windows or macOS show a security prompt when I run MP4Fix?.

No Installation Required

MP4Fix does not install anything and does not change any system settings. To remove it from your computer, simply delete the file.

Next Steps

Start by inspecting your recordings - see How to check recordings with MP4Fix?. The check command only reads your files and never changes anything.

Related articles:

What Is MP4Fix? How to check recordings with MP4Fix? Why does PowerShell say mp4fix is not recognized? Why does Windows or macOS show a security prompt when I run MP4Fix?

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