Layered Shader Problem

[CGmaniak]

I have a layered shader with 13 layers ,first 12 are .gif files with text and no background,and 13-th is a wall texture with bump map.The problem is that I like the look of each picture but I dont know how switch between first 12 so that I have a animation where 1 picture(layer) shows in 1-72 frame than it vanishes and next layer turns visible until frame 152......What should I key(I can't key transparency because it is mapped from .gif file)? :confused:

[glick_c]

Why don't you use a layered texture and animate the 'is visible' checkbox?

Or all your GIFs in a layered texture -> the layered shader with 2 nodes, your 'animate' shader and your 'background' shader ?

[laxman]

You could also make each file a numbered sequence, then key the frame increment so it changes frames whenever you want.