Depending on the version of macOS, the installation steps might slightly vary. The following steps will guide you to record your Mac’s screen with system audio using Soundflower and QuickTime Player. In other words, Soundflower lets you route your Mac’s system audio output, as an input for a sound recording app installed on the same computer. Soundflower is a kernel extension for macOS designed to create a virtual audio output device, which can then be used to capture the output audio stream as an input channel in other apps. And though there are multiple solutions available, we’re going to focus on a free and open source one. On Mac, redirecting the audio stream can easily be done with the help of an app. In the days of analog equipment, such as tape recorders, this was achieved through an auxiliary cable connecting the LINE-OUT of the cassette player to the LINE-IN of the recorder.
In order to record system audio from any audio device, you need to essentially feed the output audio stream as an input for another recording device or app. 3 Record your iPhone, iPad screen with audio.