How to retrieve lost files on DVD+R

In my earlier post, I mentioned that I accidentally deleted vital video files in UDF format on my DVD+R.

Initially I tried various undelete software to retrieve the lost files but in vain. The error message I got was invariably 'No files found.'

This is how I retrieve lost files.
1 You need a licensed software called 'Isobar Pro'.
2 Place DVD with permanently deleted files in DVD ROM drive.
3 Start Isobar Pro.
4 You will see 'Empty Folder'. [Don't panic]
5 Click the listed folder on the left until you see 'track 1' appear on the right.
6 Right click it and choose 'recover lost and missing files'.
7 You will be prompted to give the name of the drive or folder to which to save your recovered files

I followed the above steps and to my happiness, my lost files were recovered intact thanks to Isobar.