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Background Plate Subtract

Background Plate Subtract

Updated: 2 Oct 2025

Removes the background from a video using a background plate.

image

Example .dfx

Method #

This node removes the background from a video by first supplying the node with a background image without the subject in it, it then keeps track of anything that moves in front and attempts to remove the background.

Parameters

These properties control the core behaviours of the node.

ParameterDetails
Active Enables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance.
Blend Amount Changes the opacity of the new effect over the original image.
Blend Mode Choose how the image blends with the scene. See Blend Modes for details.
Blend Mode (Alpha) Change how the generated effect blends with the parent image alpha.
Affected Channels Toggle which of the RGBA channels are affected by the effect.
Capture Background Plate Capture the background plate
Difference Threshold Difference between the 2 images
Difference Scale Difference Scale
Output Mask Show generated mask
Show Background Plate Show the used backround plane

Inputs

NameDescriptionTypical Input
Background PlateImage of background without subject in it.Video Loader