Never used Handbrake, the open-source, super-powerful tool for converting video? Shame on you.
"For some bizarre reason, you've probably never used Handbrake, arguably the world's best video transcoder. Maybe you're too young to have ever used a DVD ("Grandpa, tell me about the time when Netflix sent those DVD things via that thing called 'the mail'"). But more likely you just didn't know that there was a free, open-source tool that you could use to rip your DVDs to your computer, your Android device or whatever you happen to own."