Visit from your Apple laptop or computer, using the Safari browser. Select a video to play and click the TV icon on the bottom right of the video and select ‘Apple TV’ to start casting. You may have to enter an AirPlay code from your TV to your device. Enter the code on your device or computer and the video will cast to your television. 

To discontinue casting from your computer to the television, click the TV icon again and click ‘Turn off AirPlay.’ The video will then return to your computer.