Merge Nodes

Merge nodes deal with layering multiple images together. The default mode is over, which simply places one image on top of another.

Absminus

Merges images using the difference algorithm: abs(A-B).

AddMix

Merges images using over, but also premultiplies the result.

Blend

Creates a weighted average of all inputs.

ContactSheet

Generates a contact sheet displaying all inputs.

CopyBBox

Copies the bounding box from the A input onto the B stream.

CopyRectangle

Copies a rectangular area from one input on top of another.

Dissolve

Creates a weighted average of two inputs.

In

Merges images using the in algorithm: Ab.

KeyMix

Copies input A to input B where the mask is non-black.

LayerContactSheet

Generates a contact sheet displaying all layers in the input.

Matte

Merges images using the matte algorithm: Aa+B(1-a).

Max

Merges images using the matte algorithm: max(A,B).

Merge

Merges multiple images together using various algorithms.

MergeExpression

Merges two images using Tcl expressions.

Min

Merges images using the min algorithm: min(A,B).

Multiply

Merges images using the multiply algorithm: AB, A if A<0 and B<0.

Out

Merges images using the out algorithm: A(1-b).

Plus

Merges images using the plus algorithm: A+B.

Premult

Multiplies the input’s rgb channels by its alpha channel.

Screen

Merges images using the screen algorithm.

Switch

Switches between any number of inputs.

TimeDissolve

Dissolves between two inputs using a curve over time.

Unpremult

Divides the input’s rgb channels by its alpha channel.

ZMerge

Merges input images together at their appropriate 3D depths.