Hi Dave thanks for your reply. The graphic I was hoping to overlay would be a semi-transparent 2D coloured line to indicate the path of the route. The graphic does not have to change perspective or cling to buildings, but float in space above the footage. I would see the graphic extending from bottom frame up to half to 3/4 quarters. Is this a possibility and have I explained what I am after. I am an After Effects novice and therefore may not be giving enough information or terminology. Thanks again. Douglas McLeod