I've been playing a bit with GIF animations and there are two things I'd like to do but haven't found any trivial solution for.

1) I have a background type of layer and several smaller ones. I want to make an animation where these additional layers appear and disappear. The hard way to animate this is to duplicate the background and merge in all variations I want and create an animation from that. This has three drawbacks: a) It's a rather long handiwork to do it b) by default it produces a full-frame animation that needs to be optimized c) the default differential optimization might not produce the best result in terms of size.

My question for the more experienced ones is: Is it possible to script creation of such images without creating a full fledged plugin? Example: I have background and layer1 through layer8 as small overlaying layers. I want to create a blinking/glowing effect by turning on and off layer1-8 in a random(like) way. Let's say I create a dozen of such layer on/offs and cycle the result as a GIF animation.

2) Once I created an optimized GIF animation (differential) is there an easy way to convert it back to a full-frame layer structure? (This has practical sense for example with a couple of frames taken from a video).


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