John has a TV with ATSC 3.0, but ATSC3 doesn't work with his DVR. Only the ATSC 1.0 side works. Leo says that most broadcasters aren't even using ATSC3 yet. It could be an incompatible file format. If your DVR supports ATSC3, then Leo says a call to the manufacturer is in order. Welcome to the world of being an early adopter. It's the early days of ATSC3 though, so in time, the issue should correct itself.