Center
Position of the rectangle.
Move the mask without changing its dimensions.
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MasksBeginner
Rectangle
Rectangular mask
Creates a rectangular or rounded rectangular mask for isolating areas and shaping graphics.
Rectangle
DaVinci Resolve · Fusion
Rectangle is a fast, parametric mask that is ideal for title plates, windows, local effects and simple reveals.
Overview
What Rectangle does
Rectangle is one of the fastest ways to shape a Background into a graphic card or to limit an effect to a clean rectangular area.
Because it is parametric, size, position, corner radius and softness can be animated without editing individual points.
For irregular objects, Polygon is more appropriate. Rectangle is strongest when the design is intentionally geometric.
Mental model
Rectangle is a reusable stencil: whatever node receives it as an Effect Mask is only affected inside the shape.
Common uses
Create title plates
Mask a blur
Build picture-in-picture frames
Reveal text or graphics
Create rounded UI cards
Limit color or glow effects
Flow anatomy
Inputs & outputs
The port structure shows how this node fits into a Fusion graph.
Generator node — no image input is required.
Rectangle
Fusion node
Mask Output
A grayscale mask used by Effect Mask inputs.
Inspector
Important parameters
Start with these controls before reaching for more complicated workarounds.
Width
Sets the horizontal size.
Height
Sets the vertical size.
Angle
Sets the angle of the element.
Corner Radius
Rounds the rectangle corners.
Useful for modern UI-style cards and lower thirds.
Soft Edge
Feathers the mask boundary.
Use small values for subtle blending and larger values for soft light masks.
Border Width
Sets the width of the mask or shape border.
Solid
Fills the interior of the shape instead of drawing only its border.
Invert
Swaps inside and outside of the mask.
Useful when you want an effect everywhere except the rectangle.
Level
Sets the opacity/level of the Rectangle mask.
Paint Mode
Selects the Paint Mode used by Rectangle.
Practical setup
A reliable workflow
- 1
Create Rectangle.
- 2
Connect its output to a blue Effect Mask input.
- 3
Set Center, Width and Height.
- 4
Add Corner Radius or Soft Edge if required.
- 5
Animate dimensions or position for a reveal.
Typical node chain
Rectangle→
Background→
Merge→
MediaOut
Examples
Where this node fits in real work
Lower-third plate
Rectangle shapes a colored Background before it is merged.
Rectangle → Background maskBackgroundMerge
Local blur
Rectangle restricts Blur to a selected region.
MediaInBlur + Rectangle
Troubleshooting
Common mistakes
Using Rectangle for complex organic shapes.
Over-feathering a crisp graphic plate.
Animating Width and Center inconsistently and causing the mask to drift.
Production notes
Practical tips
Use Rectangle for clean graphic geometry and Polygon for custom silhouettes.
A small corner radius often looks more polished than perfectly square corners.
For animated reveals, decide whether the mask should grow from center or from one edge.
Related nodes