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Chroma Shift

Chroma Shift · screenshot coming soon

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What this node does

Chroma Shift moves the red and blue color channels away from the green channel, horizontally and vertically. Small offsets read as lens chromatic aberration; large offsets give a bold RGB-split glitch effect. If all four offsets are zero, the clip passes through unchanged. This is a rendered stage — it needs a ▶ Run and uses an ffmpeg chromashift filter. In goes COMFYTV_VIDEO, out comes COMFYTV_VIDEO. To hand the result to a native ComfyUI node, insert a Bridge. See bridges.md.

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When to use it

  • Fake lens chromatic aberration at the frame edges.
  • Create an RGB-split glitch / retro-VHS look.
  • Add a subtle color fringe for a stylized grade.

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Parameters

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shift_rh / shift_rv

Each -255.0–255.0 (step 1.0), default 0.0. Horizontal (rh) and vertical (rv) shift of the red channel, in pixels.

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shift_bh / shift_bv

Each -255.0–255.0 (step 1.0), default 0.0. Horizontal (bh) and vertical (bv) shift of the blue channel, in pixels.

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shift_edge

smear or wrap, default smear. How the exposed edge (revealed when a channel is shifted) is filled — smear stretches the edge pixels, wrap wraps the channel around from the opposite side.

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Outputs

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Tips

  • Nudge red one way and blue the opposite way for a symmetric, believable aberration.
  • Leave all four at 0 and the node is a no-op (identity pass-through).
  • Only red and blue can be shifted — green stays fixed as the reference channel.
  • Pseudocolor — remap luminance to a color palette (false color).
  • Video Stylize — other one-click stylized looks.