tldr/pages/linux/pw-loopback.md

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2021-09-05 15:44:42 +01:00
# pw-loopback
> Tool for creating loopback devices in pipewire.
> More information: <https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Virtual-Devices>.
- Create a loopback device with the default loopback behavior:
`pw-loopback`
- Create a sink that can be selected in applications that forwards the data to another sink:
`pw-loopback -m '{{[FL FR]}}' --capture-props='{{media.class=Audio/Sink node.name=my-sink}}'`
- Create a sink that can be selected in applications that swaps the left and right channels to another sink:
`pw-loopback --capture-props='{{media.class=Audio/Sink node.name=my-sink audio.position=[FL FR]}}' --playback-props='{{audio.position=[FR FL]}}'`
- Create a source that can be selected in applications that swaps the left and right channels from another source:
`pw-loopback --capture-props='{{audio.position=[FR FL]}}' --playback-props='{{media.class=Audio/Source node.name=my-source audio.position=[FL FR]}}'`