Prism is the most stable and comprehensive multi-format video converter available and is very easy to use. Convert or compress video files within minutes. Universal video converter supporting all popular formats. Batch video conversion to convert thousands of videos. Adjust Video Settings Easily Prism lets you set compression / encoder rates, resolution and frame rate of output files. Prism supports everything from HD to high compression for smaller files. You can even set a specific size for output files. Convert Many Video Formats Prism converts avi, mpg, vob, asf, wmv, mp4 and all video formats that have a DirectShow based codec. If you can play the video file using Windows Media Player, you can convert it using Prism. Video formats supported by Prism.