Select your movie options. You can opt for the video to loop until you click to the next slide. This can be useful if you want to give introductory comments while the title is on-screen.
also see the option to Zoom to Fullscreen. If you select this, PowerPoint will stretch the video to fill your screen. PowerFinish Video Backgrounds look best if you set your slide show to
800X600 resolution. If you choose to use another resolution, you should test with the movie to ensure that the quality is sufficient at the resolution you choose.