What it does
A luminance keyer effect for Resolume Arena and Avenue, built on the official Resolume FFGL SDK. It measures the perceptual Rec. 709 luminance of each pixel and drives that pixel's alpha from it, so dark — or bright — areas of an incoming clip become transparent and let lower layers show through.
A quick way to key a black background, composite add-blend-style content, or pull a shadow or highlight matte, without needing a dedicated key colour.
- Threshold — the luma level at the centre of the key edge; pixels darker than it are keyed out
- Softness — the width of the soft edge, from a hard cut to a gradual falloff
- Invert — remove bright pixels instead of dark ones
- Works on straight colour internally and outputs premultiplied, clamped to LDR, matching Resolume's pipeline
- Universal macOS bundle and a Windows DLL
Where it stands
Released at v1.0.1. Needs Resolume Arena or Avenue 7.3.1 or newer. The before/after image is rendered with the plugin's exact shader maths rather than captured from Resolume.