I'm trying to use expressions to simulate camera shake with an improved accuracy over a simple wiggle expression. For now, I am attempting to simulate the shake from one specific motion-tracked shot. Here's the track:
http://dl.dropbox.com/u/9606498/TrackedNull.aep.zip
It appears that the motion path has two types of movement - one broad 'wander' which varies in speed quite a bit, and one fairly continuous, more detailed 'jitter' overlaid on top of that. I tried applying one broad wiggle, temporalWiggle to the results of that, and then further wiggling the results of that all in one expression but it appears that temporalWiggle won't work without keyframes (is that correct?), and stacking a second wiggle onto a wiggle seems to have very little effect at all regardless of the numbers... I must be doing something wrong.
Just wondered if anyone had any pointers?