Effects » Mix » User Effects » Key tools

Key tools
Release date: July 3, 2018
Creation date: July 2, 2018
License: unknown

Lightworks user effect KeyTools.fx

This effect is predominantly a combination of two earlier effects, "Adjustable blend"
and "Alpha adjust", both of which have now been withdrawn. The feathering section is
taken from the "Super blur" effect.

It is designed to help when the alpha channel may not be quite as required. Alpha
may be inverted or scaled, gamma, gain, contrast and brightness can be adjusted, and
the alpha channel may also be feathered. Feathering only works within the existing
alpha boundaries.

As well as the alpha adjustments the video may be premultiplied, and transparency
and opacity may be adjusted. Those last two behave in different ways: "Transparency"
adjusts the key channel background transparency, while "Opacity" is a standard key
opacity adjustment.

It has been placed in the "Mix" category because it's felt to be closer to the blend
effect supplied with Lightworks than it is to any of the key effects.
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