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Matte Choker (Pro only)
The Matte Choker effect repeats a sequence of choking and spreading the matte to fill undesired holes (transparent areas) in opaque regions. The repetition is necessary because the entire matte must be choked and spread; the spreading fills the hole, but the edges of the matte must be choked back to preserve the matte shape.
The sequence of choking and spreading occurs in two stages, each with its own set of identical controls. Typically, stage two does the opposite of stage one. After a specified number of back-and-forth adjustments (which are handled automatically by Matte Choker), the hole is filled and the matte shape is preserved.
Original (left) shows areas of unwanted transparency after using Color Key (center) that are removed with Matte Choker (right).
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