In case you are interested in adjustments of a single slider, right click on the slider which value change consequences you want to see, and choose “Animate”. This will capture a series of screenshots for each slider value.
Download some video processing application (like VirtualDub).
Drag the first of your upper created frames, and drop it to VirtualDub working screen. Choose File -> Export -> Animated Gif.
If you want to animate your definition by using multiple sliders, check this video and attached example.