UI Design: Video Settings

In TV App UI Design, you can choose whether to have Inline Video Thumbnails On or Off.

What these are, are the thumbnails in your TV Sections that would play automatically to give a little preview of the content. They are an extremely cool feature, but do note that they can often take a while to load or cause general poor performance if the files are too big. 

For instance, in the LittleThings Apple TV app, they have Inline Video Thumbnails On, so when you go to their app and hover over a thumbnail, it begins to play a preview of the content.