View iCloud Photos on Apple TV
In the Photos app 
, photos, Live Photos, and videos from your iCloud Photos appear in the Photos category in the menu bar. Your iCloud Photos albums appear in the Albums category in the menu bar.
View your iCloud Photos items
Open the Photos app
on Apple TV, then swipe to the Photos category in the menu bar.Swipe up or down on the Touch surface to scroll through the items, which are organized by date and location.
Tip: If you have a large library with years of photos, rest your finger on the right side of the Touch surface to activate a scrolling timeline. Then swipe up or down to the year you want to view.
To view and scroll through full-screen photos, select a photo, then swipe left or right.
View your iCloud Photos albums
In Albums, you can see all of the albums created on your iOS or iPadOS devices, or Mac, such as Favorites or Selfies.
Open the Photos app
on Apple TV, then swipe to the Albums category in the menu bar.Select an album, then swipe left or right on the Touch surface to scroll through the photos.
To view and scroll through full-screen photos, select a photo, then swipe left or right.