Hi there !
back from my mosaic work. So finally it worked out, so here is what did work and what did not about this time displacement effect :
– adding a global blur directly on the map did not work cause the time displacement effect seems to posterize gradients (and so blurs) from maps it use, so I still get edges, not straight, but edges anyway (with those damn pixels )
– making my comp 2 times bigger nearly worked out, but i still get those bright pixels, they were smaller, but as the source video is globally dark and blured (analogicly it was shot with depth field blurs) so when a “clean” pixel appears somewhere in it, you can’t miss him xD
– what I did first was to lower the time factor of the time diplacement effect (the first parameter, i moved it from 0.6 to 0.2) so the video was less messy but cleaner (lot’s of bright pixels where removed this way).
– and finally I added manually on zones where pixels still appeared some light lens blur using my time displacement map plus a mask on it to just focalized on specifics zones.
and so, no more aliasing and bright pixels ! hope this will help 🙂