[Marat Narimanov]

Thanks for the reply. It should work for multiple objects, each of which is on it’s layer, but i have a totally different situation – all those vehicles are on one layer and more then that – they can overlap sometimes… So i need a method to change the scale for the whole video, and to change not actually over time (it’s easy), but to change it over the screen area – all objects on the left part should be 100%, and as soon as they move on to the right side of the screen, they should change their scale down to 10%.

[Marat Narimanov]

Yes, the greatest problem is that there is only 1 layer that contains all objects. Actually, i gave those vehicles just as an example. There can be people instead of the vehicles, or people+vehicles or any other object. And, only ONE layer that contains them all.