Without this, the formula is apply both on start and end time subtitle. Activate this option will allow you to set two different formula for start and end time. The first input is for start formula and the second for end formula. Use
t2 to refer respectively start and end actual time.
Put zero time for negative
If enabled, negatives times will automatically be replaced by
00:00:00,000. Else, negatives times will be replaced by
Use UTF-8 charset
Use this if you have problem with accent. If disabled, charset will be ansi.