Nodes · Keying
Keyer
Keyingv2coreConcat: Pointwise
Overview
A luminance/channel keyer: pulls a matte from brightness or a chosen channel. For skies, windows, and simple extractions.
How to
How-to
- Pick the channel or luminance to key on; set
low/highfor the range that becomes the matte and the falloffs for its softness. view = matteto judge; skies, windows and simple extractions.
Inputs
| Input | What it takes |
|---|---|
| in | the image this node works on |
| insideMask | — |
| outsideMask | — |
| mask | limits the effect to this matte — the engine's universal mask slot, applied for every node that declares it |
Outputs
| Output | Type |
|---|---|
| out | Image |
Parameters
| Parameter | Type | Default | What it does |
|---|---|---|---|
| operation | Choice | luma | The maths used to combine the inputs. lumagreenblueredgreen_channelblue_channelsaturationminmax |
| low | Float | 0.0 | Where the key starts rising: values at or below this are 0. |
| high | Float | 1.0 | Where the key reaches 1. Between low and high it ramps. |
| falloff_start | Float | 1.0 | Where the key starts falling again on the high side (a band-pass key). Active when falloff_end > falloff_start. |
| falloff_end | Float | 1.0 | Where the falling side reaches 0. |
| invert | Bool | false | Swap inside and outside: 1 − the result. |
| view | Choice | result | What the viewer shows: the keyed result, the matte alone, a status map, or the overlay. resultmattestatusoverlay |
| 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). |