hours:minutes:seconds:frames

10:00:10:21 + 10:01:02:10 = 10:01:13:07

....the last two numbers are frames and thats why 24=1 second

10:01:02:10 - 00:00:10:21 = 10:00:51:13

I am just a video guy who doesnt know programming and would really be happy
if someone could help me with this...I have 400 codes to calculate....so if I
could just put them inside excel....that would be great.....thnx