Are you talking about using the front and back sprites to make a 3d rendering? There's probably no effective way to automate that process. Going from 2d to 3d would require extruding parts of the image to give it the 3d effect and although there are tools to kind of do that automatically, last I saw, they aren't very reliable and would require someone to manually edit the result anyway. This problem would be exacerbated by the fact that an animated gif has a few dozen frames and an automated 2d to 3d tool would probably create extrusions in different points on the different frames which would make it look like an undulating mess. I also have to stress that trying to manually edit every individual frame would definitely not be worth it because there are a combined total of somewhere over 20,000 frames in each the front and back sprite mods.