QuickTime Doesn't Capture Audio Playing on Your MacBook's Internal Audio Card? Here's What You Need to Know

Are you frustrated because QuickTime doesn't capture audio playing on your MacBook's internal audio card? For instance, it won't record the sound coming from programs like games or music interfaces. If so, you're not alone. In this article, we'll explore why this is happening and what you need to do to overcome this issue.

Why Can't QuickTime Capture Internal Audio?

It's common knowledge that Apple offers a built-in screen recorder called QuickTime Player. However, in MacOS Big Sur, this step has changed, and the Mac AVB Entity no longer shows up in the Audio MIDI Setup 'Network Device Browser'. This is due to the way internal audio and external audio are handled differently in the latest operating system.

Differences Between Internal and External Audio

In previous MacOS versions, the Mac would populate in the Audio MIDI Setup 'Audio Devices' list after it was checked in the 'Network Device Browser'. However, this step is no longer necessary. Instead, you need to route an AVB stream to your Mac first, which will allow it to be used as an AVB audio device.

How to Use Your Mac as an AVB Audio Device

To use your Mac as an AVB audio device in MacOS Big Sur, you'll need to follow these steps. First, launch the 'AVB Audio Configuration' utility and select the 'Simple Virtual Audio Entity' option. Then, route a stream from your master Series III mixer to Mac Input Stream 1. This will allow your Mac to be used as an AVB audio device in Audio MIDI Setup.

Tips for Using Your Mac with the Series III Ecosystem

When using your Mac with the Series III Ecosystem, it's essential to set your Mac clock source to 'Audio Input Stream 1' and ensure that all Mac AVB streams are switched to type 'IEC 61883-6 AMB-24' at the desired sample rate. Additionally, you'll need to set your Mac AVB clock as desired.

In conclusion, using QuickTime to capture audio playing on your MacBook's internal audio card can be challenging in MacOS Big Sur due to changes in how internal and external audio are handled. However, by following these steps, you can overcome this issue and use your Mac as an AVB audio device with the Series III Ecosystem. By understanding the differences between internal and external audio and following the tips outlined above, you'll be able to successfully record audio from your MacBook's internal audio card using QuickTime.

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