The machine looks well restored, but the action needs some work by the sound of it. I've never worked on one myself but I'm guessing a regulation and hammer filing would be incredibly difficult. Even a tuning looks like it would take a lot of extra effort. Not to say it's a bad video, I loved it. But after seeing how much space the player mechanism takes up it makes sense why they're always out of tune.
This one kinda sound similar to the original but still a bit out of tune. It being out of tune kinda adds to the charm though as a rag or honky tonk piece.
Schulz without a "t" had their own design. This has a standard action, but the piano itself is a Schultz. I have tried my best to find out more about that specific company without any luck. It may be a brand within the H.C. Bay company, but I'm not entirely sure.