I have been backing up dvds seamlessly using dvdshrink, and nero to burn. What can be done when the dvd that I am backing up has a portion of it that cannot be read, and the decryption cannot go any further because of a bad read???
You may just be encountering structural copy protection rather than a defective disk. Try running Slysoft's AnyDVD (free 21-day trial) in the background with DVD Decrypter or try the free DVDFab Decrypter. http://www/slysoft.com http://www.afterdawn.com/software/video_software/dvd_rippers/dvdfab_decrypter.cfm Also examine the disk for any obvious defects, scratches, or filth (glue, etc.).