To start the data recovery, you should use Recover All or Recover Selected option. Unlike Windows standard tools, even if it is impossible to recover all the damaged data, CDRoller recovers the largest part of CD/DVD/BD file, or fills unreadable sectors by zeroes to maintain an internal file structure.
Key Features and Benefits:
If UDF file consists of the different fragments (so called "extents"), you have the opportuntiny to recover each extent separately. Right click the file and select Properties command from the next (pop-up) menu. Go to the UDF Records tab in the Properties dialog.
Select the file extent and click Recover Selected button. After the process is completed, just rename the recovered .dat file to the file with required extension. For example, simply assign .vro, .vob or .mpg extension for video file. A small advice. To change a file's extension in the Windows Explorer, simply right click the file and select Rename in the next (pop-up) menu.