I'm not sure what he wants to do? It sounds like he thinks
DVD Shrink makes movies more compatible...no that would be the DVD writer, Media & Authoring...nothing to do with DVD Shrink or CSS.
Only DVD-ROMs can do CSS, I believe DVD Authoring drives & -R Authoring disks can...but the cheapest I found one was about $3,000 USD. Unless you own a CSS key and have the script file you cannot place the keys on the DVD-R(A) disk.