How to record system audio on macOS?

Screen Cloner recording system sound requires the use of the virtual sound device Blackhole, which needs to be installed first.

Installation method reference: https://www.cloner-alliance.com/help/knowledgebase/how-to-install-blackhole-for-macos

After installation, you need to set the Audio Device to Blackhole in the Preference ->Device settings. And set to enable monitoring, select the output device as the default system speaker in Audio monitor.

https://s1.occld.com/image/ca/kb/kb_how-to-install-blackhole-for-macos-3.png

Close the settings window to start recording system sound.