On 30 Oct 2012, at 17:39, John Emmas wrote: > > 30 x 1000 / 1001 is not the right formula for achieving 108 dropped frames per hour. > > 30 x 999 / 1000 is the correct formula. > Or, to be pedantically specific.... (30 x 999 /1000) * 3600 is the correct formula :-) Joh