Hi, I have several DVD-R discs that are saved in the standard DVD format to be played on a DVD player. Of the 28 discs I have, three repeatedly give me errors when trying to copy them using iRip. The files are visible via Finder but some will not copy using Finder either. I have cleaned the discs, but they seem neither dirty nor scratched. What is the best way to get salvageable video off of these discs? Are the .VOB files the only really essential ones or are some of the other files essential too? Is there any way to retrieve the damaged .VOB files so that they will play? Thanks for your help!