Adding applications to Security & Privacy > Microphone

i've seen that video before. he is correct, but he also does things the hard way.

once you've set up the audio MIDI settings, you don't need to revisit them each time you want to screen record. it's a matter of "set it and forget it".

same goes in recording options if, in those options, you choose "remember last selection" the options "stick"

the only setting i need to change to record my screen is to change the menubar sound options from "internal speakers" to "multi-output device".

Hi Seabeethree,

Welcome to the Apple Support Communities!

We understand that you're unable to add Quicktime to your Security & Privacy preferences to allow your microphone.

Are you unable to record the audio on your screen in Quicktime? This article will show you how: How to record the screen on your Mac

We look forward to your reply.

Cheers!

Thanks for including the screenshot, Seabeethree,

The macOS doesn't include a feature which would allow you to manually add apps to the Microphone section of Security & Privacy preferences. You can learn more here: Change Privacy preferences on Mac

You're welcome to share any feedback about this feature with Apple directly here: Feedback - macOS

Take care!

Seabeethree wrote:

I'm trying to add QuickTime to my Security & Privacy > Microphone so that I can check the box and allow internal sound in screen recordings.

QT screen recordings is a big chunk of what i use my mac for. but i don't use the microphone to record the internal sound.

to record the mac's internal sound with quicktime you need additional software. i use the free BlackHole Virtual Audio Driver. then you can choose "BlackHole 2ch" in the recording options instead of "Built-in Microphone."

you will also need to set up a multi-output device in your audio MIDI setup utility to be able to both hear and record the internal audio at the same time.

to set up a multi-output device:

Open Audio MIDI Setup: (found in /Applications/Utilities)

hit the '+' button in the bottom left corner and select "Create Multi Output Device"

then in the panel that appears on the right, in the Multi-Output Device tab, select "Built-in Output" AND "BlackHole 2ch". (and, if you want, any of your other connected devices.)

once you do that, (and BEFORE recording) you can choose "BlackHole 2ch" or "Multi-Output Device" in your menubar "sound options". 

to both hear the speakers and record the audio at the same time, choose "Multi-Output Device". before choosing multi-out, set the internal speakers' volume to a comfortable level first. you cannot control the volume once you are in multi-out mode.