is anybody know what video codec for cucusoft avi program

i have a cucusoft avi to dvd converter software,when i convert movie,it come out a note,which said i need a video codec,but i download all video codec pack in but it still said i miss the video codec in my computer,so did anubody know the codec for this program please help thank you

http://www.avi-vcd.com/codec.asp