BitrateCalc is a little utility that gives you the optimum bitrate for encoding video and audio for making DVD and DivX video discs. Simply enter the length of the video in hours, minutes and seconds, choose your media type, select your audio bitrate, and click the Calculate button. That's it!
BitrateCalc then shows you the maximum video bitrate possible for the media type, as well as the size of authoring overhead and audio bitrate. With this information, you can accurately enter the best possible bitrate into your encoding application of choice.