'zhujunsan'
Not sure I understand what you are saying. The min intervalometer increment is 100, thus I am interpreting this to mean ML will stop after 100 images and not one less. Thus, if I play it back at, say, 30 fps, I will have just over 3 secs of 'video'.
Bottom line: I think ML is telling me I can stop after 100, 200, 300 etc images.