PowerPoint supports .swf, .asf, .avi, .mpg or .mpeg, .wmv rather than .mp4 videos. So, first, you need to convert your video format. There are many free video converter in l
…eawodotcom. Then, follow the steps below: 1.On the Insert menu, point to Movies and Sounds, and then click Movie from File. 2.Click the video you want to use and then click OK. My way on how to insert videos in powerpoint 2007: You can also go to freefileconvertdotcom and download onto your desktop or somewhere you won't loose that file(FOR VIDEOS, If you are using a school computer all I know is that the powerpoint 2007 supports mpg. video files that you can download into your documents or wherever you want them). After doing that, I THINK that you DON'T NEED INTERNET CONNECTION, but I AM UNSURE ABOUT THAT. If you want to show a video from, let's say YouTube, you can watch this video but I AM SURE THAT YOU NEED INTERNET FOR THIS WAY. (MORE)