I have a bunch of DVDs, Blue Rays and such. I want to rip them and encode in a smaller size. DVDs and not such a big deal, but Blue Rays take up an obscene amount of hard drive space. I noticed that they use x264, which is compatible, but not terribly efficient. I don't care about compatibility. I want to encode them into something liver x265/x266 or AV1 to take the least amount of space while being virtually indistinguishable in quality to the naked eye on a big TV screen. What would be the best approach, which codec to choose and which settings? In a perfect world I'd hope to save 70% of space, but even 20% would be good.