you cant with dvd decrypter your have to run it though dvd shrink then burn it with nero or dvd decrypter
The best way to reduce the size of a movie so that it fits on a single DVD is to use DVD Shrink. In fact since that are times that you must use DVD Decrypter before using DVD Shrink, I have gotten in the habit of always running Decrypter then using Shrink before writing the movie to a DVD. You might want to take a look at the three links to instructions on this page of mine: http://mysite.verizon.net/eric.groves/pg48.html