Comment 12 for bug 2076315

https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/707 I don't think that's possible, or say it's a different use scenario.

The pipewire loopback is possible, because the virtual sinks/sources it created has to be accessed through libpipewire. The v4l2loopback kernel module is meant to provide kernel devices, and it must be kernel devices to be compatible with kernel V4L2 ioctl interfaces. You can certainly create loopback pipewire devices, but that doesn't mean the problems of obs/zoom/Google Meets/... will be resolved automatically until they adopt pipewire. That's a different thing.