Seconded. Nobody’s going to

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Seconded. Nobody's going to sue you unless you're directly trying to financially exploit their intellectual property. As far as the video looking "choppy," naturally, get the best quality you can, compress it as little as possible, and, if the footage is still not up to par, consider presenting it creatively, such as in a smaller frame on the screen, or in one of several boxes that split the screen. By shrinking it down, the quality may appear better. At least for demo purposes. 

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