Can QuickTime be used for recording video or audio?
Yes, QuickTime can be used to record audio or video thanks to the build-in recorder. Install the application, then go to File > New Movie Recording or File > New Audio Recording. For every command, you will need a camera or a microphone to record audio and video. There is also a page where more information is provided about these functions. You can access it using the following URL: https://support.apple.com/en-us/HT201066