You can use AirPlay to play video or audio from your iPhone or iPad on Apple TV, or to view the screen of your Mac, iPhone, or iPad on Apple TV.
Note: To stream content from a Mac, iPhone, or iPad to Apple TV, both Apple TV and the shared device may need to be connected to the same network.
Do one of the following:
Mirror the screen of an iPhone or iPad: On the iPhone or iPad, swipe to open Control Center, tap at the top of the screen, then select Play on [iPhone or iPad].
Note: If you have an Apple TV 4K and an iPhone or iPad that supports 4K HDR video, your videos from the Photos app will stream in full 4K HDR resolution.
Stream audio from an iPhone or iPad: On the iPhone or iPad, swipe to open Control Center, tap on Apple TV, then go to Remotes and Devices > Remote App and Devices. To remove a device from the list, select the device, then select Forget This Device.
On the Mac, do either of the following:
On a Mac with macOS Big Sur or later, click , then click the name of the Apple TV.
On a Mac with macOS Catalina or earlier, click Adjust settings for AirPlay and HomeKit on Apple TV