What does pause/stop mean

Tried to play a DVDs and the pause/stop symbol both appear I have rented this DVDs from two different red boxes both do the same thing only with this movie. What does it mean? Why won't it play?

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does the DVD player work with other DVD ? Did you check the surface of the DVD for imperfections or grease?Do you have access to another DVD player either stand alone or in a computer that you can test the DVD?

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