Or spend peanuts to buy yourself a great big HDD, attach it to your Mac, turn on
home sharing, organize all your rips in the TV app on Mac, then watch them whenever you like in the Computers app on AppleTV...
Bonus: Computers app will also bring your ripped music in Music app to probably the best speakers in the home too... and your Photos app collection or albums... and home movies... etc... all WITHOUT the bombardment of pitches to buy/rent more media so prevalent in the TV app on AppleTV.
Big storage is dirt cheap. Buy big, store it all there and enjoy a great way to enjoy your AppleTV. Computers app is the second most used app in my home, right behind the dazzling
Channels app. We barely open the TV app and the streamers only get limited use too.