Prism is a video file converter for Windows. It can convert video files from avi, mpg, vob, wmv (Windows Media Video formats) and more into avi, asf or wmv files. Prism Converter is very easy to use. Just add the files you want to convert to the list, select the format you want to use, and then click the convert button. A list of Prism's features follow but a quick way to try it out is to download and install now. You don't need to purchase to download and it only takes a couple of second to complete the process. Prism Converter is free.