Streaming ctent from your computer or iOS device to Apple TV using Home Sharing is a kid's game. tvOS allows you to stream a variety of ctent such as music, movies, TV shows, photos and more. I have not used it yet? Follow this handy guide to setting up and using Home Sharing your Apple TV.
First, your computer / iOS device and your Apple TV must first be cnected to the same Apple ID. In additi, Home Sharing must be enabled all devices.
How to Stream Ctent from an iPhone, iPad, Mac, or Windows to Apple TV  Quick Links: How to set up sharing home your Mac or Windows PC
Share Home iPhone or iPad
Doing it tvOS is just as easy.
How to Set Up Home Sharing Your Apple TV
Having successfully set up all your devices using the same Apple ID, you can start streaming ctent to your set-top box.