Especially do not use handbrake, cdrtools, or vlc to copy a DVD, because the library has to pay actual literal money to crooked publishers who demand a fee per circulation for digital books and streamy stuff. It saves the library a lot of money if you copy physical disks instead of stream movies, and that would deny those publishers their right to extract unlimited rent from a library.

https://handbrake.fr/
https://en.wikipedia.org/wiki/Cdrtools
https://wiki.videolan.org/VLC_HowTo/Rip_a_DVD/