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Originally Posted by SlySoft > 2. "mastering defects"
Mastering defects are structural or other errors/mistakes which were made during the mastering of the DVD. Sometimes these errors were made unintentionally ("Menace II Society" US, "Troy" Netherlands), sometimes they are made intentionally as some form of copy protection. These are not manufacturing errors, as all DVDs will have the same error as it was made while the master disc was created.
Some mastering software like Pinnacle Studio can also introduce such problems, or some Standalone DVD recording devices.
All Universal DVDs have an unintentional mastering error in the titleset where the "Macrovision Quality Protection" trailer is located (AnyDVD removes it with the message "removed invalid VOBUs"). |
To clarify myself:
AnyDVD repairs most mastering errors on the fly, there is no need to use "AnyDVD Ripper" for RipGuard, Arccos, Universal DVDs, Pinnacle Studio DVDs.
The problem is, that AnyDVD only looks at the DVD a few seconds. Some defects are inside the .vob files. To see such errors AnyDVD would need to scan (read) the whole disc from beginning to end.
You really don't want that, it would take 15 minutes before the disc would be visible to Windows!
Instead, AnyDVD ripper will scan the disc, repair the structural errors and copy it to your harddisk *at the same time* (it needs to read every sector on this disc anyway to detect all possible errors). It will not take longer than a drag and drop to your harddisk, but all problems are gone.
So, if
CloneDVD or
DVDShrink stops with an error - use AnyDVD ripper and copy the files to harddisk.