Dashboard button that casts camera to TV?

Hey awesome community. I’ve got my dashboard almost to where I want it with zero custom coding. Home Assistant really is great!
Here’s my ask: I’d like to add a button that when pressed, casts my security camera (doorbell or floodlight cam as shown in the pic below) to my living room TV. I know how to do this via an automation when motion is detected, but not sure how to do it via a button press on my dashboard. Thanks for any help!