The BCC Snow filter is an auto-animated snow generator which can composite
snow over a sky color or an image layer. The ﬁlter offers extensive options
for customizing the effect and allows you to create drifts or make ﬂakes pile
up along the edges of an alpha channel.
The built in PixelChooser, with integrated mocha planar tracking allows for
greater control over which areas of the image the ﬁlter should affect.