Hello. Several years ago my Dad sent a bunch of VHS tapes with old family movies to Walgreens and they were turned into DVDs. I have a MacBook Air running the Public Beta of High Sierra and a Superdrive. I'd like to copy the DVDs to my computer and then convert the files into MP4s so that I can add them into the Photos app and into iMovie. Before I spend a bunch of money on software, what is the best way to do this? Thanks!