Unable to do a partial screen recording on OSX with quicktime I am using multi-screen: I am using the primary screen of my MBP plus two external monitors via displayport

When I start the screen recording, it is the message I see on my screen



I go on to select an area for recording



It is where I get stuck: there is simply no way I can start the recording after the selection. I clicked, tried to access the Quicktime app, tried some key combination. But nothing will get the recording to start.

How can I start a the screen recording for part of the screen?
You can record a selected area of your screen as follows:


Open the Quicktime Player app
Choose File -> New Screen Recording or CtrlCommandN
Now select the area you want to record
Press the button in the middle of you selected area that states: Start recording
To stop, there will be a squared stop button that appears in the menu bar


As your screenshot is missing this button, you might want te restart Quicktime Player or reboot your machine.