AirPlay lets you wirelessly link together media playback on your Apple devices all over your house. You can use it to:
Send video from an iPhone or iPad to a TV
Send audio from an iPhone, iPad, or Apple TV to an Apple TV, HomePod, or other AirPlay 2 speaker
Mirror an iPhone, iPad, or Mac display to a TV
Extend your Mac’s display
Set Up AirPlay on Apple TV
AirPlay should be set up alongside the Apple TV, but there are a few settings you can check in Settings > AirPlay and HomeKit:
AirPlay: Is this thing on? Because if it’s not, you can’t AirPlay to the Apple TV.
Room: AirPlay is now part of the HomeKit framework, which means that ...