There are many methods to convert PowerPoint to video: Method 1: Upload your PPS file to
authorstream.com , a powerful online presentation sharing engine that not only allows you upload PowerPoint presentations online for free, but also convert the presentation (PPS) to video.
But there are limitations to the PPS you upload to it. The maximum file size is 1GB, and you can upload maximum of 10 PPS files. If there is no complex animation effect in your PPS, you can try this way.
Method 2: Use Acoolsoft PPT to Video Pro to convert PPS file to video
It is an all-in-one PowerPoint to video converter, which supports converting PPTS, PPS, PPTX, PPT to all popular video formats such as AVI, WMV, MPEG, MP4, MOV, FLV and 3GP. All visual elements in the original PPS will be retained after the conversion.
For more help see this discussion :
Converting your PowerPoint presentation to video.