Chromakey

This FX allows you to do key compositing based on the chromatic range of a layer.

Primary Color:

You can select the color you want to remove by clicking on the green rectangle

Or you can directly pick the color from the live input.

Secondary/Third color:

if your green background is not homogeneous, you can use a second and third color.

Just select secondary or third color and choose it as explained above

Color Mode:

Select YUV or HSV (Hue Saturation Value) color mode.

Green plate:

Gamma Enable with RGB value: Default neutral value =1
Will adjust the gamma on the whole image which is used as a green plate to create the mask.

Mask:

Draw Mask	allows you to display the mask generated
Threshold	green color value threshold. If 0 the green key value is exactly the same than the chosen green value
Opacity Range	Transition between black and white pixel in the mask. If zero the mask is binary … if you increase it you have a semi-transparent transition zone
Enable Gamma	Enables the gamma
Gamma value	makes a gamma on the distance between the pixel color and the reference color (Gamma=1 neutral)
Luma Weight	Takes into account luminance variations to remove the color from the key. if 100% we take into account the luminance variations

Despill:

Despill function allows you to remove green reflection due to studio lighting.

without despill

with despill

Enable	Enables despill function
Showdespill	Shows despill mask
Threshold	sets despill threshold

Edge despill:

You can do despill only on the edges

Smooth Edges:

Show Edges:

displays the edges in red