Screen recording with system audio only

Sometimes you want the sound the computer plays — a tutorial video, an error chime — without your microphone.

How

1. Choose a tab (or another source that offers system/tab audio).
2. Enable system / tab audio.
3. Leave the microphone off or muted.
4. Record the segment, then trim and download.

When you need your voice instead of (or with) page sound, read system audio vs microphone.