You'll have to decrypt the restriction on disc and extract the movie contents from it and then transcode to PowerPoint compatible format.
However, since most of commercial DVDs you purchase are copy protected, ripping a disc to a video that works with PowerPoint slide is not always an easy task. It may be to your advantage in the long run to convert a common video to Microsoft PowerPoint compatible format before you put it into the presentation project. Let's say, you are making a PowerPoint (PPT) to give a presentation in class or business meeting to illustrate an idea or concept, and you want to pull little pieces of a movie or a documentary (a minute of half of hour in duration) from a DVD and embed it into a PowerPoint presentation. The file size needs to be reasonable and the Power Point presentation will be connected to a high definition projector. I'm a teacher at a University, I'm trying to capture a short clip from DVD's video so I can embed it as one of the slides on a Power Point presentation at work.
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