This is how I copy all my movies from that I buy on Amazon and from my Netflix account. I also copy American Pickers and shows as the application has the channels built in. As long as you have a legal paid subscription to the service or cable/satellite company you can copy the content.
It is called
Playon and I have had since it came out years ago. It records and puts the movie in a mp4 file format. A 2 hour movie is roughly about 2 gigs.
I carry a small 4 terabyte HDD about the size of a deck cards in my TT plugged into a laptop that stored in the cabinet next to the TV. The laptop is connect with a HDMI cable to the TV. I also have games on the laptop. With a wireless mouse and an application called Emby to sort the movies with actor, director and movie information it works quite well.
This way I am not burning through data on my phone or reliant on cell signal or Wi-Fi signal. Nor am I tying up the campgrounds bandwidth as video is very bandwidth intensive.