Okoker DVD Ripper is an easy-to-use DVD ripper that rips and backups your favorite DVD movies to your hard disk driver. It provides a fast and easy way to convert DVD to AVI, VCD, SVCD, DivX, Xvid, MPEG-1/2/4. The software can export a high quality movies, and the speed of ripping is very fast. It is a super DVD ripper. Convert DVD to MPEG1, MPEG2. Convert DVD to VCD, SVCD. Convert DVD to AVI, DIVX, XVID. It is a super DVD ripper. A very beautiful individuation interface. Disk Cleaner has some useful tools to help you remove the junk from your PC . You can save a backup file of your setting so that everything is easy . Whether read-only file or system file and so on , Disk Cleaner all can process according to your setting . Advanced option has useful option to scan the empty folder , the zero-bit file , and the file of not accessing .