Features

Compositing tools and workflows.

63 built-in nodes, a shared Color Picker and local AI tools.

01 / Workspace

Graph editor and backdrops

Group branches under named, colored backdrops for plate preparation, keying or cleanup. Input thumbnails identify source footage, and Dots route connections between branches.

A Comp node graph with colored backdrops, source thumbnails and routing Dots.

Workspace

Content browser

Input opens the content browser by default. Preview sequences, frame counts and AOVs before choosing a source, or drop folders into the graph to import several sources at once.

02 / Keying and mattes

Keying, despill and edge treatment

Build the matte with Keyer, MultiKeyer or the ScreenColor / ScreenKey pair, then remove spill and refine the edges.

MultiKeyer combines color probes using operations such as minimum and maximum.
Despill, apDespill and CCdespill provide different spill-removal methods.
EdgeReconstruct estimates foreground RGB around a supplied matte.
BlendSpill uses a spill guide and the final background to treat despilled edges.
Erode changes matte size; EdgeBlur softens edges. ColourSmear extends foreground color, and Keymix blends through a matte.

A diagonal wipe comparing green-screen footage with a keyed composite in Comp.

03 / RotoPaint

RotoPaint and Motion Takes

Draw animated masks and paint or clone directly in the Viewer.

Edit spline points, tangents, feathering and stroke width.
Track image motion for one selected closed spline with RGB Motion Tracking.
Store tracking in Motion Takes, separate from hand-animated shape keys. Mute, retrack, adjust strength or bake it into keys.
Use Stroke, Stamp/Clone, Luma, Chroma, Detail and Texture tools with downstream previews.
Select Stroke Alpha for stroke coverage.
Convert raster mattes into shapes. Animated conversion is experimental.

RotoPaint clone-stamp cleanup of a tracking marker on a green screen.

04 / Tracking

Point and planar tracking

Track points or flat surfaces for stabilization and matchmove. Export CornerPin animation from tracking or affine Roto motion.

Tracker supports multiple points with pattern and search regions.
PlanarTracker includes confidence information and tracking-recovery controls.

A planar-tracked sign replacement composited onto a wall in Comp.

05 / Lenses and warps

Lens distortion and warps

LensDistortion includes nine 3DE models for distortion and undistortion. Import supported 3DE Nuke-format lens exports, including animated coefficients.

Undistort the plate, composite, then reapply lens distortion. Expanded image bounds retain pixels beyond the output format.

Radial, fisheye, anamorphic and stabilizer models.
Filtering, border handling and Crop to Format controls.
Transform, Reformat, CornerPin, GridWarp, iDistort and STmap for other image transforms.

Lens and warp nodes

An undistorted autumn plate in Comp, with the expanded image bounds visible beyond the output format.

06 / Color and EXR

Layered EXRs and color management

Choose the project working space and display transform through OpenColorIO. Read layered EXRs and apply corrections to selected AOVs or channels.

Correct color with Grade, Exposure and Saturation.
Route, add or rename channels with Shuffle, ChannelMerge and ChannelModify.
Use custom channel selections for individual operations.
Control RGB and alpha association with Premult and Unpremult.
Inspect metadata and luminance with Metadata and LumaInspect.

Color nodes

Comp project settings with OCIO, working color-space and display controls.

Color and EXR

HueCorrect

Adjust hue, saturation, luminance and spill with hue-based curves. Target a color range or clean up screen spill after keying.

Preserve luminance, blend the correction with Mix and choose luminance math for the working space, Rec. 709, Rec. 2020 or ACES.

The HueCorrect parameter panel with hue curves and channel-adjustment controls.

07 / Color Picker

HSV, CIE and HDR color

Choose colors with an HSV wheel or CIE u′v′ diagram. Preview them through the project's display transform.

Edit working RGBA, including HDR values above one.
Adjust temperature, magenta/green balance and intensity.
Sample a Viewer pixel or average a region using original working RGB and alpha.
Show working-gamut, sRGB / Rec.709, P3-D65 and Rec.2020 overlays in the CIE view.
Reuse recent colors and ten saved slots; copy and paste full-precision RGBA.
Convert sRGB hex values into working space, or enter working RGBA directly.

The Comp Color Picker with gamut overlays, working RGBA, TMI, HSV and saved colors.

08 / Detail and motion

Defocus, filters and motion vectors

Defocus supports depth maps and a Varying Kernel that changes aperture shape and angle across the frame. Create elliptical or swirling bokeh.

Use MotionVector's optical-flow analysis to drive VectorBlur.

Blur, DirectionalBlur, EdgeBlur, Glow and GodRays for blur, edge and light effects.
Denoise for temporal noise reduction.
Constant, Noise and Grain for solid colors, UV maps, checkerboards, procedural textures and grain.

A tree canopy processed with the Defocus Varying Kernel, showing spatially varying bokeh in Comp.

09 / Animation

Parameter animation

Keyframe numeric parameters in the Curve Editor, or drive them with expressions.

Edit curves and place keys at fractional frames.
Copy values and expressions between parameters. Paste animation at its original frames or relative to the current frame.
Use frame values, comp settings and references to other parameters in expressions.
Hold frames with FrameHold, or interpolate with FrameBlend, including optical flow where enabled.

Expression reference

PlanarTracker corner animation with editable keys in the Comp Curve Editor.

10 / AI tools

AI segmentation and keying

AutoMatte uses SAM3 to select subjects and MatAnyone2 to refine mattes across frames. CCkey keys green screens locally and is based on Corridor Crew Keyer 1.

Compatible model bundles are required for the local runtime.
Choose where to store AutoMatte analysis results.
AutoMatte can also use an external Worker.

AI setup

A split view comparing source footage with AutoMatte subject-matte output in Comp.

11 / Camera and 3D

Camera import and projection

Import FBX or Alembic camera animation, project footage onto cards and inspect the setup in the 3D Viewer. Render it back into the 2D composite with 3D Renderer.

Separate cameras for projection and rendering.
Editable camera animation and Viewer handles for 3D controls.
Source layers and channels retained in the rendered image.
Depth plus per-object UV, motion-vector and alpha passes. Object alpha accounts for foreground transparency.
Camera and card motion blur, overscan and Crop to Format controls.

Scene elements are cameras and cards. Camera import supports perspective cameras; Alembic import uses Ogawa.

Cameras and textured cards arranged in the Comp 3D projection workspace.

12 / Viewers

Multiple Viewers

Compare source footage, mattes and composites in separate Viewers, each connected to a different node. Save the panel arrangement as a workspace layout.

A composite and its green-screen source shown side by side in two Comp Viewers.

13 / Smart cache

Re-render less. Refine more.

Comp caches node results and reuses them when the inputs and settings still match. Revisiting a frame or changing downstream controls can avoid reprocessing the whole branch.

Lossless cache compression fits more frames in memory without altering pixels. Set the budget in Performance settings and check memory use by the cache, local AI and the system.

Comp Performance settings with the memory-cache budget and a breakdown of cache, local AI and system memory.

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