DivXCAT

This program helps you with cutting DivX/XviD files if you create movies on more than one CD. DivXCAT analyzes your AVI file or (to save time) the log file (divx.log) created by your DivX and tells you where to split to get files of equal size.

It considers both the video and audio bitrate. The program does not split the AVI files itself - it shows you where to split it and use your favourite video editor to perform this action.