Maybe everyone else knew this except me. I was writing a script that sequenced layers out every so many seconds. I noticed that they were drifting in longer comps. I thought it was a problem with the drop-frame timecode we use(NTSC). I went in to try to figure out how to get things fixed and could not get it to work, my calculations were off by a frame or two consistently. I was using time in seconds to dictate my times. Finally I tried using the simple equation of
x represents time expressed in frames. My script now works like a charm. This is very frustrating that AE doesn't compensate somehow for Drop Frame timecode. I'm hoping that AE7 has rectified these descrepancies.
[/end rant]