How to rip DVDs and convert Videos on Mac OS X
What you need are Aiseesoft DVD Ripper for Mac and Aiseesoft Video Converter for Mac.
It includes two parts
Part 1: How to rip DVDs on Mac OS X to put on portable devices
Part 2: How to convert Videos on Mac OS X to put on portable devices
Part 1: How to rip DVDs on Mac OS X to put on portable devices
Step 0: Download and install Aiseesoft DVD Ripper for Mac (Intel Version) or (Power PC Version).
Step 1: Click the "Load DVD" button, find the DVD folder of the movie you want to add from your DVD-ROM, and Click "Open".

Step 2: Tick the check boxes before the titles and chapters that you want to rip.
Step 3: Select the output video format you want from the "Profile" drop-down list.
Aiseesoft DVD Ripper for Mac can rip your DVD to almost any video formats supported by popular digital player.
Step 4: Click "Start" button to start your conversion
The conversion will be finish soon when you enjoy your leisure time.