---
title: Step 9 - Garbage Mattes
slug: arsuite/step-9-garbage-mattes
docTags: 
createdAt: 2022-11-25T12:51:59.000Z
---

:::hint{type="danger"}
You can't use SkyAtmospher in combination with the garbage matte.
:::

When using the virtual studio camera BP from the AR Suite content folder it is possible to add garbage matte objects to the scene. These are typically used to extend a CG background beyond the extent of the physical green screen area of the set.

Garbage matting is configured in the following way:

- Add a "NcVirtualStudioCameraBP" camera actor to the scene
- From the **NcamARSuite Content > UECamera > Meshes > GarbageMatteObjects** folder drag the garbage matte mesh into your level
- Add as many meshes as required, and scale and position them accordingly. Ensure that the meshes are "moveable"
- Select the NcVirtualStudioCameraBP actor and navigate to the pipeline component
- Expand the "Film" section and add the Garbage matte meshes in the level to the Garbage matte objects Array, and enable the "Enable Masking" checkbox

::Image[]{src="https://api.archbee.com/api/optimize/Qn0sdcVrDcDbwMFmH0oYn/6gLHEkBECr1yYR7wqpR0W_image.png" size="48" width="640" height="1462" position="center" showCaption="false"}

### Inverting the Garbage Matte

It is possible to invert the effect of the garbage matte.  In this case everything **outside **of the garbage matte will be rendered full CG, and the garbage matte itself will be rendered as a holdout showing the camera image.  This can be done by changing the "Masking material" in the Film section to the "**ApplyInverseGarbageMatte**" material

::Image[]{src="https://api.archbee.com/api/optimize/Qn0sdcVrDcDbwMFmH0oYn/xr-Ejp0nAkZaX1nlVFF8n_image.png" size="50" width="644" height="505" position="center" showCaption="false"}

##