There are several apps that do this — the trick is finding one that isn’t bloated with adware, spyware, or costs an unreasonable amount of money.

Otherwise, you can just use Quicktime and a virtual audio driver.

What do you need:

1. Quicktime. This is included as part of MacOS
2. Blackhole (virtual audio driver)
3. Ladiocast (virtual audio routing)

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NOTE: You may need to bypass certain security settings to install this software. This is something you will have to do frequently with Mac computers, so I won’t describe it in detail here. Nevertheless, if you have issues, please look up how to work around them!

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I. Initial Configuration

1. Set your system audio output to “BlackHole 2Ch”

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   Note: If you are using an application that sets its audio output separate from the system, please go into that application’s settings and set the output to BlackHole 2Ch

   </aside>

2. Open Ladiocast

3. Under INPUT 1,** select “BlackHole 2Ch”

4. Under MAIN OUTPUT, select your main output device (Macbook speakers, audio interface, headphones, etc).

   1. You can add multiple input and output devices!

   

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   Note that in this image I am receiving INPUT from BlackHole, but nothing is currently outputting to my speakers.

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5. Each INPUT has corresponding buttons to route that input to the different available outputs. Under INPUT 1, press the “MAIN” button to playback your system audio to your listening device.

   

   <aside> 📢

   Now you can see that sound is going out my audio interface (UMC202HD) and I can now hear it on my speakers.

   You can also see that the built in microphone is picking up this sound, but I don’t have this being routed to an output so I’m not worried about feedback.

   </aside>

Recording the Screen

1. Open Quicktime.
2. Select File > New Screen Recording from the Menubar.
3. Depending on your version of MacOS, the next steps will be different. Follow the instructions here: https://support.apple.com/en-us/102618