Sometimes you want to be sure that the DVD works through your presentations. That's when you rip them first, and play the files instead of the DVD directly.
So, how do you do it. There is a ton of programs to do this for you. One program is Any Video Converter Ultimate, which will cost you money. If you don't want to pay for it, one way would be to to first rip the film with MakeMKV to make a .mkv file. Then you install the Any Video Converter Free and convert the .mkv file into eg .mpg (choose output Video Files, MPEG-II Movide (*.mpg)) . The .mpg file can be used directly in ProPresenter.
But you don't want the adware, so remember to choose "Custom Installation (Advanced)", and turn off "Download and install SafeFinder toolbar" when you install Any Video Converter Free.