2. There are 2 kinds of  Split mode. Please select a Split mode:

2 segments:

The program splits the AVI file into 2 segments. Drag the slide bar, the output size will change. At last, click the Start button to start splitting the AVI file.

More than 2 segments equally:

The program splits the AVI file into more than 2 segments equally. Change the split number, then click the Start button to start splitting the AVI file.

Note: The program may not output file size precisely.