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5 Right-click the Layer Mixer node, and choose Overlay from the Composite Mode submenu to blend the Ext Matte node most effectively with the grade.
6 If necessary, you can use the grading controls of the Corrector node to which you’ve attached the EXT MATTE node to change the characteristics of the texture clip, desaturating it for instance. You can also select the EXT MATTE node itself, open the Key palette, and use the Transform, Offset, Loop, or Freeze controls described later to change how the matte appears.
TIP: If you want the texture you create to be unaffected by blur or sharpening operations within the grade, be sure to add it to the very end of the node tree.
TIP: If you want the texture you create to be unaffected by blur or sharpening operations within the grade, be sure to add it to the very end of the node tree.
TIP: If you want the texture you create to be unaffected by blur or sharpening operations within the grade, be sure to add it to the very end of the node tree.
The resulting texture effect, blended with the grade using the Overlay composite mode
Using External Mattes to Create Transparency
You can also use an EXT MATTE node to create transparency in a clip, for compositing with clips underneath it on the Timeline.
1 Right-click any node, and choose the attached matte you want to use from the Add Matte submenu of the contextual menu.
Adding an EXT MATTE node to a Clip grade applies the effect to only that clip, whereas adding an EXT MATTE node to a Track grade applies the effect to the entire Timeline.
2 Right-click any empty area of the Node Editor, and choose Add Alpha Output to reveal the Node Tree output on the right that lets you assign a key to be used to define clip transparency.
3 Connect one of the EXT MATTE node’s triangular key outputs to the Alpha output at the right of the Node Editor.
The node setup for using an external matte to composite two layer