Many people suggest to me iorgsoft and give me infomation below:

iOrgSoft DVD Ripper is a good DVD ripper. It offers you the easiest interface and the best output quality with fast conversion speed. You can rip DVD with excellent quality merely a few clicks away, even help you upload your home DVD movies to the internet for sharing with more friends. With iOrgSoft DVD Ripper, enjoy movies on the go where you stopped watching on our computer and pick up where you left off.

Rip DVD to MP4, AVC, Divx, Xvid, WMV, MOV, MPEG, MPG,, 3GP, FLV, SWF DVD Ripper enables you to rip DVD to MP4, AVC (H.264), AVI (Divx, Xvid), WMV, MOV, MPEG 1, MPEG 2, MPEG 4, 3GP, FLV, SWF.

Convert DVD to MP3, WAV, WMA, AAC, AC3, AMR, M4A, MP2, AIFF, FLAC DVD to Flash Converter can extract DVD audio, and convert it to MP3, WAV, WMA, AAC, AC3, AMR, M4A, MP2, AIFF and FLAC format.

you can google it or simply download it here:
http://www.softwarewikipedia.com/index.php/Template:IOrgSoft_DVDRipper_home