Yes. You can make video files with PowerPoint.
Makes sense, since conceptually a video is essentially a slideshow, or a procession of a lot of images, or in case of PowerPoint: slides. And PowerPoint lets you set the presentation in automation without mouse clicks or keyboard presses. More importantly, you don’t need to use any exporter since PowerPoint will let you save it directly in video format such as WMV*. (It used to have MP4, but I messed up my computer once but I did not see any visible effects. Maybe this is one of them)
Anyway, I tested it with a .ppt file and here’s the outcome: (link)