I just started playing around with stuff like this in the last week or so, and found that Magic DVD Ripper
does a good job with the right settings, with no need to use Roxio Media Manager at all. It will even skip over bad sectors on a scratched DVD (I used one as a test), end even let you amplify the volume in the converted file, so you can watch a video and actually hear it without headphones. Unfortunately, Magic DVD Ripper is about $35 (trial available).
Just today I tried Format Factory
, which will rip a DVD to Blackberry-compatible format, just by selecting Blackberry as your target device. Best of all, Format Factory is FREE. Format Factory doesn't let you adjust the volume level in the converted file, and my two tests so far indicate that I'll need headphones or REALLY QUIET surroundings to hear it. It also just failed to convert when encountering bad sectors. But this finally gave me the incentive to try the toothpaste trick to remove scratches from a CD/DVD. It actually worked, and both programs were able to read the DVD without complaint/failure.
Also on the tests I did, the files created with Format Factory were about 20% smaller than those created Magic DVD Ripper, but you can do a lot of tweaking of the output with Magic DVD Ripper, but almost none with Format Factory.
Of the two, I would say if you're planning on using headphones anyway, Format Factory would be the one I recommend. But then again, I'm new to all this, so pretty much anything that allows me to watch DVDs on my Blackberry is cool!