Visual effects software is used to add visual depth and character to video or audio tracks. Some software can only perform specialized effects while other software seems to have an almost endless list of capability.
One of the more common uses of visual effects software is associated with audio files. Most media computer programs have a visual montage of colors that morph into different shapes and structures. Many of the visual effects software available have several of these montages preloaded and provide the capability to create custom packages.
Another common use is in the title and credits presented during the into of a video. Making the words bounce around or seem to walk, hide or any other interesting effect is accomplished through the use of visual effects software.
Using more powerful visual effects software, the limits are defined by the imagination. Create explosions, light sabers or what ever you can dream up.