You can use the Degrain node to remove grain from any clip in the pipeline. For example, degrain the KeyIn clip by using a Degrain node at the beginning of the Matte branch to make it easier to extract the matte. Similarly, add the Regrain node to the pipeline to add grain to an image. Keep in mind the following when working with Degrain and Regrain nodes:

• You can add the Degrain node to any part of the processing pipeline.
• You can add the Regrain node to any part of the pipeline except to the Front and Matte pipes of MBlend nodes and the Matte pipes of CBlend nodes. This is because these pipes are designed to produce a matte, and the result of the Regrain node is a colour image.
• You can go directly to the Load Setup browser by holding Alt when you drag a node to the schematic.

The Degrain and Regrain menus in the Modular Keyer contain the same set of controls as the Degrain and Regrain menus accessed from the Processing menu on the Desktop (only the menu layout is slightly different). See Adding and Removing Film Grain.