hi, my friend, i am using one dvd ripper pack, it is very good to use.
Rip DVD to any video format
Tipard DVD Ripper Pack can rip DVD to MP4, H.264, AVI, WMV, FLV, MKV, MPEG-1, MPEG-2, 3GP, 3GPP, VOB, DivX, MOV, RM, RMVB, etc. with the highest speed and no loss of quality.
Support Devices
iPod, iPod touch, iPod touch 2, iPod nano, iPod nano 4, iPod classic
iPhone, iPhone 3G, iPhone 3GS, iPhone 4, Apple TV
PSP, PS3
Wii, Zune, Zune 2, Xbox, Xbox 360
Google Phone, Sony Walkman, Archos, Creative Zen, iRiver, BlackBerry, BlackBerry Storm, BlackBerry Bold, Palm Pre, Mororola, LG, Sony Ericsson, Mobile Phone, etc.
It is free trail, if you want to learn more about it, just google it.
http://www.google.com.hk/search?hl=zh-CN&source=hp&q=tipard+dvd+ripper+pack&btnG=Google+%E6%90%9C%E7%B4%A2&aq=f&aqi=&aql=&oq=&gs_rfai=&gs_upl=11788%2C1107%2C17%2C2%2C197%2C545%2C2%3A4%2C2%2C0%2C3
I hope it can help you, and good luck for you!