mirillis[.]com/free-hd-video-player
With support for using AMD, Intel, & Nvidia GPUs for hardware assist this may interest some folks. It'll also export [re-encode] your video, & has controls to activate & vary the amount of several enhancing features.
Installing the software doesn't overburden the registry with new values, but you will get folders for the program itself, in Users AppData Local & Roaming folders, & in ProgramData. I just copied the program's folder after running setup in a VM, and it seems to work fine in this regular [non-VM] copy of win10.