How does iShowU Capture "app audio"? Neil Clayton July 07, 2022 10:27 Updated I'm glad you asked! In short: SWB Audio Capture. How it works. My hope is that in gaining some understanding of the underlying capture technique, troubleshooting any problems will be easier. Related articles Install iShowU Audio Capture - Mojave/Catalina Installing iShowU Audio Capture (Mojave and earlier) Recording App Audio - A General Guide iShowU Audio Capture not showing up I can't record audio from app X (your app name here) Comments 0 comments Please sign in to leave a comment.