Limiting Output to Specific Channels

Parameters in this group allow you to post-process the output of the effect so as to block certain color information.

Blur applied to all channels (left), to the blue channel (center) and to Chroma only (right)

Blur applied to all channels (left), to the blue channel (center) and to Chroma only (right)

The Select parameter allows you to switch individual channels on/off in a number of color spaces:

  • All: all color information is allowed to contribute to the output.
  • RGB: switch the standard red, green and blue channels on or off.
  • HSB: switch hue, saturation and brightness on or off.
  • CMYK: switch cyan, magenta, yellow and black (subtractive primaries common in printin) on or off.
  • YUV: switch Luminance and either Chroma channels on or off. Colors are represented according to the Y’CbCr standard used in broadcast video.
  • Oklab: switch Lightness and Balance along the Blue/Yellow or Green/Red gradients, as defined by the Oklab perceptual color space.
As you mix color information between the original video frame and the output of the effect, the Alpha parameter allows you to define how the alpha channel is calculated:
  • Blend: an average of the original alpha and the one generated by the effect is used.
  • Foreground: only the alpha channel from the effect is used.
  • Background: only the alpha channel from the original video frame is used.
  • Min: the minimum of the two alpha channels is used.
  • Max: the maximum of the two alpha channels is used.