Two possible options here...
1. Is this a retail DVD?
If so, then it may have a new form of "copy protection" (intentional corruption of the data by the studio), that cannot be understood by the legacy software DVD Decrypter.
You'll want to try ripping the disc with the newer applications that are available. I'm not a fan of the workflow or features of modern rippers, so I suggest only using them on discs when needed. DVD Decrypter is fine for most discs, especially TV shows and most "non-
blockbuster" type movies. In other words, the $5 bin movies at
Walmart will work fine in DVD Decrypter, while this week's newest movie (Avatar, for example) probably won't.
These include:
There's also the
free-while-Beta DVDFab Passkey (an AnyDVD-like program), but I'm not a fan of beta testing software. It may not only
not work, beta software can sometimes screw up a computer.
2. Is the disc good?
The DVD uses error correction for DVD-Video players, and DVD players have the ability to gloss over finer errors. A DVD player need not read bit-for-bit accurate to mostly playback a video.
But a computer does need bit-for-bit accuracy, and will fail to read the disc image/data if it's not good data.
ISO Puzzle is a great tool for recovering data on bad discs, but you'll have to use AnyDVD or
DVDFab Passkey for copy-protected discs. More on
using ISO Puzzle for optical disc data recovery, and some other methods, at
http://www.digitalFAQ.com/forum/show...a-bad-421.html
...
That's really the only two options. Good luck!
And remember ... post a reply, to let us know what works! (That goes for anybody reading this post -- yes, you!)