![quicktime player mac os high sierra quicktime player mac os high sierra](https://i.stack.imgur.com/JDoIA.png)
A menu bar item would work ok and this can be activated in System Prefs > Displays or a separate preference called Recording/Capture and they can put audio options in there too. Same goes for screenshots (shift-command-3, shift-command-4, shift-command-4-plus-spacebar for window shots). Long-term Mac users accustomed to Quicktime know where it is but it's not immediately obvious. It would also be useful if they put screen recording in a more visible place. It would be useful if Apple offered an audio loopback device, it probably wouldn't take them long to setup. Then switch the output back to normal after recording as volume control doesn't work with aggregate devices. When you play a video like on Youtube, the audio bar will show that there's audio being picked up if it's setup ok. When you do a recording, switch the System Prefs > Sound to the aggregate device and in Quicktime there's a dropdown next to the record button, set that to soundflower 2ch. This will show up in System Prefs > Sound as an output. You can create an aggregate device in there by clicking the plus icon and adding all the required channels e.g built-in input and output and soundflower 2ch (this allows listening plus loopback). This can be done in /Applications/Utilities/Audio MIDI Setup.
![quicktime player mac os high sierra quicktime player mac os high sierra](https://photos5.appleinsider.com/gallery/25398-34447-ipadrecordingmacostitle-xl.jpg)
When SoundFlower is installed, you can setup custom audio devices with loopback.
#QUICKTIME PLAYER MAC OS HIGH SIERRA SOFTWARE#
There's some 3rd party software to enable this like SoundFlower and possibly the Loopback software too on the following site: Does it still not allow audio recording from macOS sound mixer, while recording a screen recording?