I came across this crazy-simple video converter: FreeMake. It offers a one-click interface to convert your videos from just about any format to just about any format. This can be very helpful if you receive a video that you want to include in a PowerPoint presentation but it's not in a format that plays nicely with Microsoft products (which, unfortunately, is most of them). Grab the software and point to your source video then click the button on the bottom row that corresponds with the video format you want to output. For PowerPoint the WMV (Windows Media Video) format will be compatible. That's it. You're done. Now you can link to that video in PowerPoint and it should play without a hitch.
Merry Christmas to you.
Freemake Video Converter 2.0 from Freemake on Vimeo.