Hi, there, I downloaded a copy of DVD files from the net. Unfotunately, they were not iso format or any image formats. I see all Vob, Ifo, and Bup files. I have played with PowerDVD, Media Player Classic. Yet, I am not sure which files are missing or broken. Is there any way to identify which files I need or broken? Any way to verify all DVD files are there? Thanks to your kind advice!!