Identify where the video is actually stored
A home video held on a Mac and a film purchased through an Apple Account do not reach the television through the same arrangement. If a local library disappears, identify its source computer before searching the subscription catalogue. The source location explains which device and sharing configuration need checking.
Use Apple’s Home Sharing route
Apple’s Apple TV 4K guide requires matching Apple Accounts and Home Sharing enabled on the relevant devices, then uses the Computers app to display shared libraries. Its broader Home Sharing guidance describes the same local Wi-Fi network and availability of the source computer. This is a configured library-sharing workflow, not an automatic upload of every Mac video into the television app’s online subscription collection.
Check a specific source before changing accounts
For example, a family may normally select a named Mac library to watch home videos. If it is absent, confirm that the intended Mac is available on the network and that its sharing settings still name the expected library. Compare that with another source only if the household actually uses one. Do not recreate an account or buy an unrelated film merely because the Computers list looks different.
Separate access readiness from content rights
A visible shared library does not establish that every item can be played on every device or used outside the home. Confirm an authorised sample and the intended playback route. Keep account credentials private while reviewing matching sign-ins. If support is needed, report the source computer, television model, library name and actual missing item rather than saying all Apple TV content has disappeared.
Questions, answered
Where does Apple’s guide open configured Home Sharing libraries on Apple TV 4K?
It directs viewers to the Computers app after configuring the matching devices.