Framework Base-Apps: Layouts & Navigation Screens
AppleTV: Home Screen
The red-framed area is the instantly visible area of the app's home screen.
The Banner Area (or "Highlight Area"), in the upper right, will display the static background image which Apple renders from your uploaded App Graphics.
The dark gradient area below is the scrollable area "below the fold", allowing viewers to scroll through your rows of Channels (Categories).
Live Channels will be positioned on row one at the top.
Channels which contain Sub Channels or Media Groups will display the Gallery Images of your Sub Channels or Media Groups.
Channels without Sub Channels or Media Groups will display the Gallery Images of your Videos assignd to the Channel.
AppleTV: Sub Channel or Media Groups Screen
AppleTV: Player Page
When clicking on a Video Gallery Image ("Thumbnail"), the Video Details Page is opened which displays title, description, view numbers, duration and Gallery Image Artwork of your Video, with a Play Button to start playing back the selected Video.
Below the details of the selected Video, a row of thumbnaisl of "Recommended Videos" is being displayed, usually other Videos from this Channel (Category).