I have a masthead image of a landscape. there are two or three layers of hills, a layer of buildings, one with cars and one with bikes.
I want to animate this so each layer scrolls from right to left at a different speed, and cycles round and round and round, with the result that it never looks quite the same at any moment in time.
I saw one like it on a website, but they've changed it now.
I know I can create this (very slowly) in Photoshop, but is there an easier (quicker) way?