pw-loopback - Man Page

• Create a loopback device with the default loopback behavior: pw-loopback
• Create a loopback device that automatically connects to the speakers: pw-loopback -m '[FL FR]' --capture-props='media.class=Audio/Sink'
• Create a loopback device that automatically connects to the microphone: pw-loopback -m '[FL FR]' --playback-props='media.class=Audio/Source'
• Create a dummy loopback device that doesn't automatically connect to anything: pw-loopback -m '[FL FR]' --capture-props='media.class=Audio/Sink' --playback-props='media.class=Audio/Source'
• Create a loopback device that automatically connects to the speakers and swaps the left and right channels between the sink and source: pw-loopback --capture-props='media.class=Audio/Sink audio.position=[FL FR]' --playback-props='audio.position=[FR FL]'
• Create a loopback device that automatically connects to the microphone and swaps the left and right channels between the sink and source: pw-loopback --capture-props='audio.position=[FR FL]' --playback-props='media.class=Audio/Source audio.position=[FL FR]'

tldr.sh

pw-loopback [options]

The pw-loopback program is a PipeWire client that uses the PipeWire loopback module to create loopback nodes, with configuration given via the command-line options.

-h | --help

Show help.

-r | --remote=NAME

The name of the remote instance to connect to. If left unspecified, a connection is made to the default PipeWire instance.

-n | --name=NAME

Name of the loopback node

-g | --group=NAME

Name of the loopback node group

-c | --channels=NUMBER

Number of channels to provide

-m | --channel-map=MAP

Channel map (default [ FL, FR ])

-l | --latency=LATENCY

Desired latency in ms

-d | --delay=DELAY

Added delay in seconds (floating point allowed)

-C | --capture=TARGET

Target device to capture from

-P | --playback=TARGET

Target device to play to

--capture-props=PROPS

Wanted properties of capture node (in JSON)

--playback-props=PROPS

Wanted properties of capture node (in JSON)

The PipeWire Developers <https://gitlab.freedesktop.org/pipewire/pipewire/issues>; PipeWire is available from <https://pipewire.org>

pipewire(1), pw-cat(1), pactl(1)

Other ways to create loopback nodes are adding the loopback module in the configuration of a PipeWire daemon, or loading the loopback module using Pulseaudio commands (pactl load-module module-loopback ...).