@luksus No, that's a separate issue. Audio does go through pulseaudio already in QtWebEngine, so microphone can be used, but camera on Android based devices is done via a Qt plug-in which talks to the Android HAL via libhybris, however video/camera support in QtWebEngine does not go through QtMultimedia, therefore it does not use that plug-in. Instead, it expects v4l devices, and QtWebEngine itself has no knowledge of what libhybris is or how to use it.
Therefore, someone needs to do the work to write a system service which bridges the Android HAL for CameraService as v4l compatible device on the Ubuntu side of things, so that apps using v4l for camera access will just work.