iF - imagefader - is free and a simple post production tool for timelapse imaging.
iF generates fades between the images to make animations smoother iF can handle jpgs (in a folder) or quicktime as source iF generates numbered jpgs (000001.jpg to 999999.jpg)
tested on 10.6, should work on 10.5 maybe 10.7, tell me please.
download here. ©2012 Wolfgang Oblasser screenshot