I think that even if the Web Browser asset supports a part of webRTC, it won’t be able to access the microphone / webcam on Windows.
An alternative could be to launch a third party application that would handle your webRTC services and use a transparent background player to display it on screen.
When I hit HTML5 test pages in the default browser asset “https://html5test.com” I saw that I missed some essential support our WebRTC services. But doing some more investigation and saw that you guys have a have different players. One for windows and one for tablets/kiosks. And with using the tablets/kiosk variation the system is using Electron as engine that gives me better WebRTC support. In fact I did a test with everything working also camera/microphone. Within Electron the right codec are available as H.264 and even VP8.
Is the tablet/kiosk player maintained by you guys from within the app? Is there a certainty that the WebRTC support with audio and video will survive updates and sort?