I think via a Google search you’d find a ton of commercial products that would do it.
Just saw this edit to your post.
I mean…do you think I haven’t done this? I already said that KeepVid and Freemake Video Downloader didn’t work, and I’ve also already said that I have a crippled-at-best internet connection at home, so I don’t exactly have the ability to test out a bunch of different methods myself. That’s why I’m asking here, where a lot of talented people have a lot of experience in stuff like this, so if someone here were to say “Yeah, X program works perfectly!” I can just get that one instead of wading through mountains of adware eating up my limited data alottment trying to figure it out myself.