Will I delete files while using DVD Shrink?

I'm trying to make a Backup! of my files using DVD Shrink. The only problem is when I insert the DVD home video in my computer to "Backup!" on DVD Shrink it says: "The folder you specified already contains DVD files! DVD Shrink requires these files to be deleted before you... show more I'm trying to make a Backup! of my files using DVD Shrink. The only problem is when I insert the DVD home video in my computer to "Backup!" on DVD Shrink it says:

"The folder you specified already contains DVD files! DVD Shrink requires these files to be deleted before you continue."

What does that mean? Is it going to delete the files on the personal DVD I inserted into the computer?
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