The iPhone 5's screen may not be huge, but it's definitely a little nicer for watching movies than the old screen.
Consequently, you may want to rerip some of your movies to take advantage of the extra screen estate. Just one problem: your old DVD ripper doesn't support the new screen resolution or aspect ratio.
Here's one that does -- and it's free. For a limited time, you can get uRexsoft's iPhone DVD Ripper (Win) free of charge.
True to its name, the utility copies DVDs to your PC and converts them to iPhone-friendly formats. That's true of any number of rippers (including some freeware ones, as I'm sure a few users will take joy in pointing out), but uRexsoft is among the first developers to add support for the iPhone 5.
It also has outputs for all the other iPhone models, as well as the Apple TV and iPod Touch. (Alas, the fifth-gen Touch isn't on the list, though any of the iPhone 5 outputs should work just fine.)
To get the program, click here, then click the blue "Get it Free" button. That'll download a zip file containing both the installer and a readme file, the latter containing the license code you'll need to copy and paste into the program the first time you run it.
iPhone DVD Ripper worked just fine (albeit rather slowly) on my copy of "Jurassic Park." However, because I don't have an iPhone 5 (though I do have a new iPod Touch on order), I wasn't able to test the resulting rip on anything other than my computer -- where it looked and sounded just fine.
The only things not free here are tech support and upgrades. Of course, because giveaways like these happen so regularly, the upgrade issue really isn't one.
Bottom line: DVD ripper. Works with iPhone 5. Free. Anything else you need to know?