Originally posted by: BlueWeasel
One thing I've done before in this situation, is do multiple "shrinks" by using customized media (under options) and setting the size higher than a standard 4.36GB DVD.
Example: Assume the movie (no extras) is really long and just the movie takes up 7400MB. In order to fit on a single disc, it would have to be compressed around 60% or less, and I don't want it.
I'll set the custom size to 6000MB, which results in ~80% compression. I'll go ahead and back it up, and then use DVD Shrink to open the first backup. Set the size back to DVD5 under options and do another backup...the second time around the compression should be another 80% or so.
Granted, the quality will probably suffer so using this method simply because of the high amount of compression being used. But, I've been satisified the few times I've done this, and I can live with it since it's just a backup copy.