I'm trying to create a composition that freezes the input movie-
stream a certain number of times over a given time-period (creating
the effect of a reduced frame-rate). The Accumulator node does the
job of freezing the image just fine, but I need to be able to set a
minimum time so that the Accumulator's 'Accumulate' parameter is
always turned on for a minimum of 1 frame. I'm currently finding that
the Accumulator is sometimes not switched on for long enough to
'catch' a frame. This varies according to the frame-rate the
composition is running at and can lead to unpredicatable behaviour.