If you add animation to one or more slides, or timed transitions between them, you can save the presentation as a high resolution video that is sized for the big screen. This video shows you how to export a slide that’s already created, not how to create the slide and add animations (I’ll create a different video for that).
Note: I recorded this video in PowerPoint 2013, and although the output provides the option for 1080p resolution, native PowerPoint would only output to 720p. UPDATE: I’ve found an Add-In from a PowerPoint expert that outputs to 1080p. http://skp.mvps.org/videotools.htm
Let me know what you think about this video. How can I improve my videos?