Since Final Cut Pro 10.0.0, there has been a secret debug menu, that's not user accessible.
You can explore the debug menu by following these steps:
- Install Xcode if you don't already have it.
- Install NibDecompiler using the instructions on their GitHub README.
- Make a duplicate of your Final Cut Pro application for safety.
- Right click on the Final Cut Pro application bundle and select "Show Package Contents".
- Navigate to "Contents > Resources > en.lproj" (assuming your system is set to English).
- Copy the
MainMenu.nib
file to your desktop. - Right click on the
MainMenu.nib
file and select "Services > NibDecompiler".
- Double click on
MainMenu.nib
to open it in Xcode. - If presented with a "Trust opening older file format?" warning, select "Open and Upgrade".
- If presented with a "The document MainMenu.nib has an internal inconsistency that was found and repaired", select "OK".
- Select the "Debug" menu in the Interface Builder and press CMD+D to duplicate it.
- Close Xcode.
- Move the
MainMenu.nib
file from your desktop back into your Final Cut Pro application, replacing the original. - Now when you open Final Cut Pro, you'll have access to the Debug Menu.