FUSION · NODE REFERENCE

Switch

Select one active input branch

Chooses one of several connected inputs and passes only the selected source downstream.

Utility / RoutingBeginner

Switch

Overview

What Switch does

A Switch can expose several inputs while producing one output. The Source control determines which connected branch is currently passed through.

Because the downstream graph does not change, Switch is useful for template variants, A/B comparisons and production setups where a single branch should be selected by an expression or keyframe.

Switch changes routing, not compositing. If several branches must be visible together, use Merge, MultiMerge or a system-specific merge node instead.

When to use it

A/B source comparison
Template design variants
Select alternate keyed plates
Route different precomps into one downstream chain
Drive variants with expressions

Switch in context

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**Switch Controls: Source Input0/Input1**
Example for Switch.
Original image

**Switch Config: Number of Inputs and input names**
Example for Switch.
Original image