Since the program is not available for testing, I believe it allows you to capture an unlimited number of frames or to put it more simplistic, it can capture the frames for as long as you have free space on the target driver where the output file is going to be saved. I have checked various websites and have seen configuration images, but there is nowhere specified about the total number of frames. If you have the application, go to Help > Contents to read about this features and functions.
