A few years ago I spent several months scraping SD recordings off the HDD from a failed Samsung DVD/PVR (never again) , and messing about with Handbrake. This is apparently possible with the DTR-T1000 and, as Black Hole has pointed out, easier if you have a Linux machine. It is a lot harder than just buying compatible optical discs if they have actually got round to issuing them. I suspect it is going to get harder still with the advent of Britbox and Salto. In the past I have had to order anglo-saxon content from Germany and Australia.
I normally playback via the Panasonic 4k Bluray. In three or four years I have acquired as many 4k discs. It does do a better job of upscaling than the previous machine, but of course it is region locked.
Anti-copying measures may have the effect of protecting content providers, but must impact on hardware sales. I believe Humax are now out of the Freesat market. I am wondering if I can use an FTA receiver with a single feed, and what I would have to do that I have not already been doing with the Foxsat.
My Aura has been powered on and off several times a day since Monday. I have seen the odd issue such as persistent picture in picture, which could probably be resolved by a software update. It is most likely possible to copy content to the Aura with a file manager, but you already have it on HDD you might as well save the internal disk space and playback via the USB (NTFS), or NAS if you have it. Obviously a backup is desirable. I did get the usual option to format the HDD. The main problem is actually identifying less popular content on Amazon Prime Video.