Matte Key

A Matte Key control is available for some video inputs. When enabled it uses a separate image or video source as an alpha mask: areas where the matte is dark become transparent, and bright areas remain opaque.

Type

Selects the matte source.

  • None: Matte Key is disabled.

  • Video: Use another video source in the project as the matte.

  • Image: Use an image file as the matte.

Source

When Type is Video, selects which video source to use as the matte.

Image File

When Type is Image, opens a dialog to select the matte image. Supported formats: .png, .jpg, .jpeg.