To cast the film using Apple AirPlay:
Ensure your device and Apple TV (or AirPlay-compatible TV) are connected to the same Wi-Fi network.
On your Apple device (iPhone, iPad, or Mac), start playing the film in the browser or app.
Tap the AirPlay icon (usually found in the video player or control center).
Select your Apple TV or AirPlay-compatible device from the list.
The film should now stream to your TV.