I haven’t actually used any of these software products, but I’ve read about them before. A good way to backup your DVDs that you use all the time, and don’t want to lose…
As it’s name implies, DVD Shrink allows for putting a 2 layer disc onto a single layer DVD-R. It does it either by increasing the compression, or by you telling it you don’t want everything. That includes not including subtitles, certain audio tracks, extras, menus etc.
PC:
Download and install DVD Shrink. There are links to tutorials written by users.
Download and install Nero
Run DVD Shrink and choose “Backup!”.
MAC:
Download and install DVDBackup
Download and install DVD2oneDownload and install Toast