Nodes · Keying
KeyerScreen
Keyingv1coreConcat: Pointwise
Overview
The screen keyer: sample the green/blue backing, get a matte plus despilled RGB. The daily green-screen tool.
How to
How-to
- Wire the green- or blue-screen plate and pick the screen colour: sample it with the eyedropper on a clean patch.
- Tighten
screen_rangeuntil the screen goes clean, then loosen until the edges come back. - Switch the view to the matte to judge it, then back; despill with SpillKill after.
- Chain KeyerScreenClean or CleanScreen upstream on an uneven screen before keying.
Inputs
| Input | What it takes |
|---|---|
| in | the image this node works on |
| insideMask | — |
| outsideMask | — |
Outputs
| Output | Type |
|---|---|
| out | Image |
Parameters
| Parameter | Type | Default | What it does |
|---|---|---|---|
| screen_color | Color | [0.1, 0.7, 0.15, 1.0] | The screen colour. Pick it from a clean patch of the plate. |
| screen_gain | Float | 1.0 | How hard the key pulls: raise it to clean thin screen, lower it to keep fine edge detail. |
| screen_balance | Float | 0.5 | Which of the two non-screen channels the key measures against (0 = one, 1 = the other, 0.5 = both). Slide it toward the side that reads cleaner on this plate. |
| clip_black | Float | 0.0 | Matte values below this become 0 — solidify the background. Clip the CORE matte hard; never clip the edge matte. |
| clip_white | Float | 1.0 | Matte values above this become 1 — solidify the subject. |
| despill | Bool | true | Also remove screen spill from the RGB. Turn OFF when this keyer only supplies a matte. |
| view | Choice | result | What the viewer shows: the result, the matte, a status map (core / edge / screen), the overlay, or the despill alone. resultmattestatusoverlaydespill |
| disabled | Bool | false | Bypass: the node passes its first input through untouched (D in the graph). The knobs keep their values for when it comes back. |
| label | Text | A note shown under the node in the graph — what this node is FOR. Never affects the render or the cache. | |
| hide_input | Bool | false | Draw the node without its input wire — a tidy graph for a node whose source is obvious (a Dot, a viewer tap). |