Capturing audio

How Zerds records both sides of a call and keeps them cleanly separated.

Dual-channel: Me and Others

Zerds records two channels and transcribes them separately onto one merged timeline:

• Me — your microphone.
• Others — system-audio loopback: the remote caller, video playback, anything else your machine plays.

During a recording you can mute either channel, or adjust its gain to boost a quiet mic or level a badly-mixed call.

Record just one app

Instead of the whole system mix, you can scope the Others channel to a single application — so notifications and background music don't end up in the transcript.

• Launch the target app first, then pick it from the app picker.
• The app must have played audio at least once to appear in the picker.

How capture works

On Windows, Zerds uses WASAPI — the same audio layer every application plays through — so there is no virtual cable to install and no per-app integration to wait for.

Zerds runs on macOS, Windows and Linux. All three are in beta.

Discord calls are captured differently — one clean track per participant. See Discord integration.