There are many tools available that allow you to extract DVDs or BluRay to PC but none that I've found that are as easy or simple to use as the open source tool, HandBrake.
With HandBrake I have managed to batch rip a home-made DVD comprising of multiple chapters into MP4 files on the fly, with some degree of quality control and tweaks.
I won't go into a thorough review here because this is a product highlight - the controls can be a tad finicky here and there but altogether the package provides all the features I have needed thus far, and I am very happy with the results.
Pumping out MP4 videos from a DVD is all I needed, and this one does it for free.
Grab HandBrake here: