You can use DVDShrink and compress the whole movie to fit onto a blank dvd. Start Shrink, hit Open Files, find the movie on the hard drive, hit Backup. This will open a small window and I suggest clicking on the box for Deep Analysis and the box for Adaptive error compensation under the Quality Tab.
Once you have your targets set the way you want, hit OK and it will start the compression process.
Burn the resulting dvd video with the burning program of your choice. I personally would set DVDShrink to output as an ISO and burn with ImgBurn, but you don’t have to do that.
There are many guides to using DVDShrink. I suggest going through some of them. www.mrbass.org or www.dvdshrink.info
If you want higher quality output with full backups, I also think you should look into a program called DVDRebuilder. There is a free version available.