Presentations to Video Converter transforms your pptx, ppsx, ppt and pps presentations into any video format supported by your system so that you can instantly create AVI, ASF, WMV, MPEG, VOB, MP4, a flash files in SWF format, Animated GIF and burn your presentation to DVD.
Btw Presentation To Video Converter has trial version without time limit, so you don't need rapidshare.........
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I used Presentation to Video Converter ( geovid ) for transforming presentation into video... May be help you...