I've been researching "cutting the cord." My son is a techie but he's 2000 miles away. A media-streaming device-like Roku, Apple TV, Firestick etc--needs to access the internet to get the programs. Usually folks buy a subscription like Amazon's Firestick is hooked up with DISH, Roku has DirectTV, etc. There's a few other "media boxes" like Epic's ATVB with their own "maintenance" or subscription services. None of these "allow" DVR recordings, but the latter have USB ports for external drives, so a DVR or recording for personal use can be possible. Most say, you don't need it, as the programming is "stored in the cloud" and all you need to do is say, "I want 2006 Program X" or any movie, and bring up the series.
I haven't tried this yet but think I've understood it. My brilliant son uses "Raspberry Pi", which is a low-cost streaming device without any subscription where you get all this for free.