I use 2 paid for programmes Any DVD for Android converter and magic DVD ripper. It rips my DVDs to mp4 format and then I connect my tablet to my laptop and transfer the files across to my tablet. They were both quite expensive $30 each but they get the job done and I think they are worth it. The any DVD for Android is a bit better as you can rip your DVDs to formats better suited to particular devices, ie there are profiles for galaxy tab 7,10, galaxy S4, note and the quality is generally better if it's device matched than ripping to generic mp4's.
Posted via my Galaxy s4