I have the same appletv problem.
home videos are not syncing since they were moved from iTunes to AppleTV app.
Apple TV HD, tvOS 14
home videos are not syncing since they were moved from iTunes to AppleTV app.
Apple TV HD, tvOS 14
What you need to do is make sure they are in the Music or Movies folder in your home folder on your Mac and turn on Home sharing on both your Mac and the AppleTV linked to the same Apple ID email address.
I find it is useful if you have a large movie library on another hard drive, to ensure the TV App's preferences do not try to organize the library under the Files preferences:
I have the same appletv problem.