I am trying to back up my DVD which is a Kung Fu movie purcahsed from Asia. It is NTSC, all regions, DVD - 9. I think it is of dubious quality as there are a few areas which jitter when the movie is played on the home player. I was hoping that a backup would improve playback. However, the problem is that when I try encoding it (there is no Encryption) using DVD Shrink 3.1, at 82%, this message always comes up: "DVD Shrink encountered an error and cannot continue. Failed to read file "D:\".Data error (cyclic redundancy check)." Does this mean I cannot back this up? Or can I do so with another program? Or is there some way of bypassing that error? I do not really care if the movie has a small glitch. I did try this same thing on another Asian Kung Fu movie which also stops at another spot. These are proper bought movies which I don't think are pirated copies but I think the quality of production is poor. Maybe poorly factory pressed?