I built this for myself a while back, and finally got around to making it an integration. I use MediaMTX for my camera proxy (i prefer it over go2rtc) and I wanted a very simple way to display the live feed (WebRTC) within Home Assistant. My wife hated all the other video cards, so i created one with fewer visible controls and a simple tap to go full-screen, tap again to minimize. It’s ideal for Kiosk use and it will not keep the tablet screen alive unless its in full-screen mode (meaning you can manage Kiosk wake/sleep via motion and not worry about live video streams keeping the screen awake).
Here’s the repo (just add to HACS):