Creative Effects > Modular Keyer > Setting Up the Processing Pipeline >

# Adding Clips to the Pipeline

You can add clips to the pipeline to use with nodes that require extra clips. For example, the Difference Matte node requires two clips.

You can also add new clips to use in place of the Front, Back, or Key-In clips you selected when you opened the Modular Keyer. You may want to replace an existing clip temporarily to see the result, or process the final composite with the new clip.

NoteWhen you access the Modular Keyer from Action, Action uses the original Front, Back, and Key-In clips. If you want to replace these clips, you must return to Action and replace them using the Layers menu.

To add a clip to the schematic:

1. Drag the Desk or Library node from the node bar to the schematic.
2. Do one of the following:
   - If you used the Desk node, select the clip you want to bring into the schematic by clicking its upper-left corner.
   - If you used the Library node, select the clip and then click Load.

   You are returned to the Modular Keyer and the clip appears in the schematic.

To attach the new clip to a node:

1. Select Move from the Edit Mode box.
2. Move the clip to the left of the node you want to attach it to.
3. Select Parent from the Edit Mode box.
4. Drag the cursor from the right edge of the new clip to the appropriate source tab of the node. If it is a single input node, drag the cursor to the left side of the node.

   The clip is connected to the node.

NoteFor more information on using particular types of nodes, see Modular Keyer Node Reference.

To replace an existing clip:

1. Select Move from the Edit Mode box.
2. Move the clip near the existing clip.
3. Select Parent from the Edit Mode box.
4. Detach the old clip from the pipeline by dragging the cursor across the part of the pipeline between the old clip and the rest of the pipeline.
5. Connect the new clip to the pipeline by dragging the cursor from its right edge to the appropriate source tab of the first node on the branch.

To replace a clip that was added to the pipeline:

1. Double-click the clip.

   If you added the clip with the Desk node, you are brought back to the EditDesk. If you added the clip with the Library node, you are brought back to the library.

2. Select another clip.

   It replaces the previous clip in the pipeline.

TipDo not leave unused clips in the schematic: each time you process or play the clip, the Modular Keyer reads all clips off the framestore, even if they are not a part of the pipeline.