Movie recording works with your built-in camera and many external cameras. If you're using Mac OS X 10.10 (Yosemite) or later, you can also record the screen of any iOS device (iPhone, iPad, iPod Touch) with a Lightning port and iOS 8 or later.
First, open Quicktime, go up to the Choose File menu and select "New Screen Recording."
To change the recording settings, click the arrow next to the Record button. Then choose your camera or iOS device, microphone, and recording quality. You can monitor the audio while it's being recorded by using the volume slider.
To record, click the red record button on your screen.
Once you've clicked the red button to record, you can click anywhere on the screen to begin recording or you can drag to select an area of the screen to record.
Once you're done recording, click the stop button in the menu bar or press Command-Control-Escape.
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