More PowerPoint tips: http://www.dvd-ppt-slideshow.com/powerpoint-knowledge/
Actually, we cannot import a PowerPoint file into Windows Movie Maker directly, for Windows Movie Maker's supported input files are video, picture, audio or music, so we have to figure this out with some special methods.
1, Save each slide in PowerPoint presentation to picture.
Open PowerPoint file, go to Save as, on the "Save as type" option, and there are 6 picture formats.
Run Windows Movie Maker, you can import all the pictures and edit them, then generate a beautiful video.
The disadvantage of this method is that it cannot keep the audios and animations in original PowerPoint presentation. To avoid this, I'll show you the second method.
2, Convert PowerPoint presentation to video file.
Don't make fuss about this topic. All we need is this professional tool: Moyea PPT to video Converter. It can convert PowerPoint to almost all popular video formats.
You have to do only three steps:
1, Import PowerPoint presentation
2, Choose output file format
3, start conversion.
A few minutes later, the converted video comes on earth.