Record the sound from a page or from your computer EN

Tab audio, system audio, and how they mix with your microphone.

Rekorder can record the sound playing on the page you're recording (tab audio) or the sound playing on your computer (system audio), together with your voice. One setting, Source sound, controls both.

What gets recorded

Which sound Rekorder captures depends on what you record:

A tab: the sound of that tab.
A window or your entire screen: the system sound, meaning whatever your computer is playing.

If you record only your camera, there's no source sound to capture. Your microphone still works. See What you can record: tab, window, screen or camera for the recording modes.

Turn Source sound on or off

Click the Rekorder icon in your Chrome toolbar to open the popup.
Open the settings and go to the Audio tab.
Switch Source sound on or off.

The setting is on by default. It's applied when you start a recording, so change it before you click record.

Recording system sound

When you record a window or your entire screen, Chrome shows its own sharing dialog. Pick what you want to share there. Whether system sound can be included depends on that dialog: if it offers an option to share audio, leave it ticked. If you don't get system sound, Rekorder records the picture without it.

Chrome on Linux can't capture system sound, so on Linux only tab audio is available. See Why there is no system sound on Linux.

How it mixes with your microphone

Rekorder combines the source sound and your microphone into a single audio track. Viewers hear both together, at their normal levels. If you're talking over music or a video, the two overlap in the recording.

To record only the page or computer sound, turn off your microphone, or mute it during the recording.
To record only your voice, turn Source sound off.
To pick which microphone is used, see Record your voice and pick a microphone.

The mix is fixed when you record. Rekorder doesn't record the two sounds as separate tracks.

Troubleshooting

Nobody can hear the page or computer sound: check that Source sound was on when you started, and that the sound was actually playing in the tab you recorded. When you record a window or screen, check that the Chrome sharing dialog included audio.
No system sound on Linux: this is a Chrome limitation, not a Rekorder fault.
The recording has no sound at all: see My recording has no audio.