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15.  Animation Filters

These are animation helpers, which let you view and optimize your animations (by reducing their size). We gathered “Optimize (Difference)” and “Optimize (GIF)” filters together, because they are not much different.

15.1. Optimize

15.1.1. Overview

Figure 16.327. Example for the Optimize animation filters

Example for the Optimize animation filters

In this animation, the red ball goes downwards and past vertical bars. File size is 600 Kb.

Example for the Optimize animation filters

Optimize (Difference): File size moved to 153 Kb. Layers held only the part the background which will be used to remove the trace of the red ball. The common part of layers is transparent.

Example for the Optimize animation filters

Optimize (GIF): File size moved to 154 Kb, a bit bigger in the present example, bur layer size has been reduced. Layers held only a rectangular selection which includes the part of the background which will be used to remove the trace of the red ball. The common part of layers is transparent.


An animation can contain several layers and so its size can be important. This is annoying for a Web page. The Optimize filters let you reduce this size. Many elements are shared by all layers in an animation; so they can be saved only once instead of being saved in all layers, and what has changed in each layer can be saved only.

GIMP offers two Optimize filters: Optimize (Difference) and Optimize (GIF). Their result doesn't look very different.

15.1.2. Activate filters

You can find these filters in the image menu:

  • FiltersAnimationOptimize (Difference)

  • FiltersAnimationOptimize (for GIF)


 
 
  Published under the terms of the GNU General Public License Design by Interspire