Used for compositing camera footage shot using a blue, green, or red screen as a backdrop over a new background video or a still image from a separate file.
Blurs the alpha channel of an image, performs levels and gamma correction on the output of the blur, and composites the output alpha with the initial alpha using the chosen apply mode.
Contracts or expands the edges of the matte to bring them closer to or farther from the foreground. Two Choke controls allow you to smoothly adjust the matte.
Creates a key from a single channel in the source. This type of filter is called a luma key, because the key is usually created from the image luminance, but you can also use any single RGB channel.
The BCC Make Alpha Key filter creates a new alpha channel from one of the existing channels in the filtered image and includes level and gamma correction controls to refine the new alpha channel.
