Avi Splitter
AVI Splitter cuts an AVI file into small playable pieces. To allow files to be recombined later in the correct order, Avisplit inserts a unique identifier (GUID) in every split file.
The minimum size of the pieces varies from format to format and depends on how often the key frame has been inserted in the source video. In general, movie quality video cannot be reduced to pieces of less than 1 mb.