Thanks for all the advice all of these things are really useful. The video is a David Bowie video which i have turned into a series of stills. Its like a simplified portrait you see for an art video.
Am i right in thinking the basic thought then is to either use flash frame by frame or to take my existing photoshop footage and use it with masks in after effects? Is that correct? So do i use a motion blur mask in after affects.
I will try out all of these things!
I also love that A-ha video but for this instance the jittery affect would be too hand drawn, it needs to be more mechanical and smooth to work with the rest of my animation (i think).