Chroma Keying and Working with Green Screens >

# Setting Up the Nodes and Media to Pull a Key

To pull a key, you must first set up your composite in the Modular Keyer.

To set up the composite in the Modular Keyer:

1. From the timeline, select your front clip segment.
2. Click FX and select Create ConnectFX.

   You are taken to the ConnectFX view. The schematic is displayed and your front clip is connected to the output node.

3. From the ConnectFX node bin, drag the Modular Keyer node between the front clip and the output node and release it when the connection goes from red to yellow.

   The front clip is connected to the front (red) input of the Modular Keyer node, which is connected to the output node.

4. Double-click the back (green) input of the Modular Keyer node.

   You are taken to the Viewing panel and the cursor becomes a green arrow, prompting you to select a back clip.

5. In the Viewing panel, click on the clip you want as your back.

   You are taken back to the ConnectFX schematic and your back clip is connected to the back input of the Modular Keyer node.

6. Double-click the matte (blue) input of the Modular Keyer node.

   You are taken to the Viewing panel and the cursor becomes a blue arrow, prompting you to select a matte clip.

7. In the Viewing panel, click on the clip you want as your matte.

   You are taken back to the ConnectFX schematic and your Matte clip is connected to the matte input of the Modular Keyer node.

   Your front, back and matte clips are now connected to the front, back and matte inputs of the Modular Keyer node. You are ready to start creating your key.

8. Double-click the Modular Keyer node.
9. Click the Edit button that appears at the bottom of the screen.

   The Master Keyer processing pipeline appears. The Master Keyer is the default keyer.

   NoteOnce inside the Modular Keyer, the Modular Keyer node bin is displayed at the bottom of the screen. Though very similar to the Connect FX Node bin, the Modular Keyer node bin contains only nodes that are relevant for keying. To return to the ConnectFX view, click Return.
10. Double-click the Master Keyer node to display the Master Keyer menu at the bottom of the screen.

After you have set up the nodes and media, set up the viewports for keying.

#### Related Information

- Chroma Keying and Working with Green Screens