If you use #pipewire for cameras you can now (in the upcoming 1.2) enforce specific rotations via node rules. This is useful on devices with rotated cameras that don't use a DT and #libcamera or for testing (e.g. to find out the correct rotation of a phone camera). The rotation is respected by an increasing number of apps, notably #gstreamer based ones (like Snapshot - but not Cheese) and #firefox (if you enable PW cameras via `media.webrtc.camera.allow-pipewire`).

See gitlab.freedesktop.org/pipewir…

Webcam is upside down when pipewire is running. (#4034) · Issues · PipeWire / pipewire · GitLab

PipeWire version (pipewire --version): 1.0.7. Distribution and distribution version (PRETTY_NAME from /etc/os-release): Ubuntu Oracular Oriole (development branch). Desktop Environment: Sway Wayland...

^GitLab