Linux

Capture opens the default output’s monitor — the PulseAudio special source @DEFAULT_MONITOR@ — through PulseAudio’s protocol, which PipeWire’s pipewire-pulse also serves, so it works on either sound server with nothing to grant. There is no endpoint choice: --input, --device, --list-devices and [input] are Windows-only, and changing what the app hears means changing the system’s default output. The binary links libpulse.so.0 and will not start on a machine with neither server installed. F3’s audio line reads live PulseAudio 48000/2 @DEFAULT_MONITOR@ when it works.