My guess is that you will have better luck researching this by looking at different DVD player models, or asking someone who works in an electronics store.
Typically, when video is projected in theatre, it is done through some kind of computer program designed for that purpose, rather than a DVD player. You can trying looking through the manual to the DVD player to see if there is a way to turn that feature off, but other than that I am not sure any of us will be able to help, since we are not familiar with the particular player you are using.
Good luck with your search.