Rain filter adds falling rain to your clip. The main controls (first 3 sliders) allow you to adjust the overall rain speed, rain direction (wind simulation) and raindrop shape (raindrop lenght). The next two slider groups control the raindrop density and opacity of the far and near rain plane. Parameters: Speed Controls how fast the raindrops are falling. Wind Controls how much the raindrops drift to left or right side. Length Controls the visual length of the raindrops. Rain Far plane rain density. Opacity Controls the opacity of the far plane raindrops. Chaos Controls how irregular the far rain plane is. Drops Near plane rain density. Opacity Controls the opacity of the near plane raindrops. Free* Free effects are fully functional even in AnyFX DEMO. See also other simulations: Snow - add falling snow to your clip.