If you’re actually ripping bluerays, I would highly recommend using MakeMKV. It’s technically paid software but while it’s in beta you can can a free license key from their forums. BluRays can be formatted oddly and include a bunch of crap you probably don’t want (preroll ads, etc), so when I tried to rip one with jusy ffmpeg it was a pain, but MakeMKV deals with most of that for you and gets a 1-to-1 copy of the movie files + anything like captions and alternate audip tracks.