Need help w/ quicktime files

Ok, so i made a presentation in keynote (iwork '09) and on the third slide I incorporated a movie. When i export the file to quick time it works fine it goes through each slide and on the 3rd slide it will play the movie properly. As soon as I move it to usb and then play it from my wdtv live it starts the video right away at the beginning of the presentation (just the audio) you don’t see the video until you get to the 3rd slide…Any ideas how to fix this?