Hi, my friend, now many dvd rippers can rip dvds to video onto your computer.
As for me, i perfer to choose an easy-to-use yet amazing dvd ripper with too many powerful function, like this snowfox dvd ripper. It's really a good dvd ripper to rip DVD movies, including latest copy protected DVD movies to most popular video format. It's compatible with iPad, iPhone 4, iPod, iMovie video, iDVD video, Final Cut Pro video, Android phones and other portable devices, so that you can not only watch movies on your computer, but also on other applications. Backup dvd movies on macbook just a few steps and playback with quicktime.
At the same time, it has the unique video conversion function like converting video with original resolution (1:1 conversion) than many other dvd ripper, then you can save the space of your external hard drive. With the exclusive "Enhanced DVD Analysis" technology, you could find the main title of dvds without manually more easily.
If you wanna have a try, just follow the link as below:
http://www.mac-videoconverter.com/dvd-ripper-mac.html
Evaluate by yourself. Hope it helps you!