Dvdfab to Shrink files to big

Hi this is probably a dumb question.
I’ve used DvdFab decrypter to to back up a dvd title and I’ve open it with Dvd Shrink and the file is to big to burn onto a Dvd, How do I fix this problem?

You probably don’t have enough free space on your target HDD, example .
Make sure there is at least 4500 MB (4.4GB) free.