Use Matte Curves to adjust the luminance of input mattes.

To access the Matte Curves menu, use:
Batch, then select a node from the Node bin.
Timeline, then use Batch FX (see Creating Batch FX).
The Modular Keyer, then select a node from the Node bin.
This node accepts a front, back and matte clip, and outputs a result.
The Matte Curves node processes gaps in clips set to No Media based on the input tab receiving the information.
| Input | Result |
|---|---|
| Front | Black frames |
| Back | Black frames |
| Matte | No media |