+1... but the drawback is the audio goes through speakers and mic devices by default. The result is noisy or poor the most of the time. An improvement is create an internal loopback device between the application producing the sound and Quicktime (or whatever). I am using "ISound Audio Capture" to create a new internal virtual device in Mac. It lets you aggregate different sources, so you can capture tipically just an app's sound (most quality capturing), or mic + app's sound (e.g.recording your speech at the same time). It is up to you at any time. Working in Mac OS Catalina.
+1... but the drawback is the audio goes through speakers and mic devices by default. The result is noisy or poor the most of the time. An improvement is create an internal loopback device between the application producing the sound and Quicktime (or whatever). I am using "ISound Audio Capture" to create a new internal virtual device in Mac. It lets you aggregate different sources, so you can capture tipically just an app's sound (most quality capturing), or mic + app's sound (e.g.recording your speech at the same time). It is up to you at any time. Working in Mac OS Catalina.