GreenX is a multifunctional calculator for DivX. You can calculate the
bitrate, file size, movie time, bits/pixel, resolution and "Quick Config.
CLI"-string to get best results with DivX. GreenX is one GUI with one
small box for special settings. It always calculates at once - no need to
click a button or switch to another interface. You can use a special
preview-screen to see the resolution you have chosen and resize it as
desired. You always know the number of bits per pixel which is very
important to get good results with DivX.