I made an inconsequential mistake: : (5590.835 sec)*(24/1.001 fps) = 134045.[994005..] frames, i.e., 481..134046 should be : (5590.835 sec)*(24/1.001 fps) = 134045.[994005..] frames, i.e., 0..134045 It does not change the '-to' argument. Please excuse my error. --Mark.