You also have access to Soundflower (16ch) & Soundflower (2ch).
This method usually resolves the QuickTime not recording audio error – if you are still facing issues, go back to step 2 and select a different microphone as per your needs.
Select the Built-in Microphone: Internal Microphone option. Open QuickTime player and choose ‘New Screen Recording’ from the file menu. Sometimes an error can occur if you have chosen the wrong microphone.
How to fix QuickTime not recording audio? Check & Modify QuickTime Settings So, how can you troubleshoot QuickTime not recording audio error? QuickTime doesn’t record internal audio when this error occurs – it can be because of many reasons – mainly related to QuickTime settings or sound input settings. One of the most common problems people face – QuickTime screen recording no audio error.