Working on Wallace's illustration of viewing the Aorist as a "snapshot" and the Imperfect as a "movie", I wanted to insert a filmclip into my powerpoint demonstration for my Greek class to help the students visualise the difference between the two.

Inserting the photograph was easy, but even though I downloaded a filmclip, Powerpoint wouldn't let me insert it into the demonstration.

Does anybody know how to do this?

Thanks.