Matte effects

  1. After Effects User Guide
  2. Beta releases
    1. Beta Program Overview
    2. After Effects Beta Home
  3. Getting started
    1. Get started with After Effects
    2. What's new in After Effects 
    3. Release Notes | After Effects
    4. After Effects system requirements
    5. Keyboard shortcuts in After Effects
    6. Supported File formats | After Effects
    7. Hardware recommendations
    8. Planning and setup
    9. Setup and installation
  4. Workspaces
    1. General user interface items
    2. Get to know After Effects interface
    3. Workflows
    4. Workspaces, panels, and viewers
  5. Projects and compositions
    1. Projects
    2. Composition basics
    3. Precomposing, nesting, and pre-rendering
    4. View detailed performance information with the Composition Profiler
    5. CINEMA 4D Composition Renderer
  6. Importing footage
    1. Preparing and importing still images
    2. Importing from After Effects and Adobe Premiere Pro
    3. Importing and interpreting video and audio
    4. Preparing and importing 3D image files
    5. Importing and interpreting footage items
    6. Working with footage items
    7. XMP metadata
  7. Working with text and graphics
    1. Text
      1. Formatting characters and the Character panel
      2. Text effects
      3. Creating and editing text layers
      4. Formatting paragraphs and the Paragraph panel
      5. Extruding text and shape layers
      6. Animating text
      7. Examples and resources for text animation
      8. Live Text Templates
    2. Motion Graphics
      1. Work with Motion Graphics templates in After Effects
      2. Use expressions to create drop-down lists in Motion Graphics templates
      3. Work with Essential Properties to create Motion Graphics templates
      4. Replace images and videos in Motion Graphics templates and Essential Properties
  8. Drawing, painting, and paths
    1. Overview of shape layers, paths, and vector graphics
    2. Paint tools: Brush, Clone Stamp, and Eraser
    3. How to taper shape strokes
    4. Shape attributes, paint operations, and path operations for shape layers
    5. Use Offset Paths shape effect to alter shapes
    6. Creating shapes
    7. Create masks
    8. Remove objects from your videos with the Content-Aware Fill panel
    9. Roto Brush and Refine Matte
  9. Working with layers
    1. Selecting and arranging layers
    2. Blending modes and layer styles
    3. 3D layers
    4. Layer properties
    5. Creating layers
    6. Managing layers
    7. Layer markers and composition markers
    8. Cameras, lights, and points of interest
  10. Animation, keyframing, motion tracking, and keying
    1. Animation
      1. Animation basics
      2. Animating with Puppet tools
      3. Managing and animating shape paths and masks
      4. Animating Sketch and Capture shapes using After Effects
      5. Assorted animation tools
      6. Work with Data-driven animation
    2. Keyframe
      1. Keyframe interpolation
      2. Setting, selecting, and deleting keyframes
      3. Editing, moving, and copying keyframes
    3. Motion tracking
      1. Tracking and stabilizing motion
      2. Face Tracking
      3. Mask Tracking
      4. Mask Reference
      5. Speed
      6. Time-stretching and time-remapping
      7. Timecode and time display units
    4. Keying
      1. Keying
      2. Keying effects
  11. Transparency and compositing
    1. Compositing and transparency overview and resources
    2. Alpha channels, masks, and mattes
  12. Adjusting color
    1. Color basics
    2. Use the Adobe Color Themes extension
    3. Color management
    4. Color Correction effects
  13. Effects and animation presets
    1. Effects and animation presets overview
    2. Effect list
    3. Simulation effects
    4. Stylize effects
    5. Audio effects
    6. Distort effects
    7. Perspective effects
    8. Channel effects
    9. Generate effects
    10. Transition effects
    11. The Rolling Shutter Repair effect
    12. Blur and Sharpen effects
    13. 3D Channel effects
    14. Utility effects
    15. Matte effects
    16. Noise and Grain effects
    17. Detail-preserving Upscale effect
    18. Obsolete effects
  14. Expressions and automation
    1. Expression
      1. Expression basics
      2. Understanding the expression language
      3. Using expression controls
      4. Syntax differences between the JavaScript and Legacy ExtendScript expression engines
      5. Editing expressions
      6. Expression errors
      7. Using the Expressions editor
      8. Use expressions to edit and access text properties
      9. Expression language reference
      10. Expression examples
    2. Automation
      1. Automation
      2. Scripts
  15. Immersive video, VR, and 3D
    1. Construct VR environments in After Effects
    2. Apply immersive video effects
    3. Compositing tools for VR/360 videos
    4. Tracking 3D camera movement
    5. Work in 3D Design Space
    6. Preview changes to 3D designs real time with the Real-Time Engine
    7. Add responsive design to your graphics 
  16. Views and previews
    1. Previewing
    2. Video preview with Mercury Transmit
    3. Modifying and using views
  17. Rendering and exporting
    1. Basics of rendering and exporting
    2. Export an After Effects project as an Adobe Premiere Pro project
    3. Converting movies
    4. Multi-frame rendering
    5. Automated rendering and network rendering
    6. Rendering and exporting still images and still-image sequences
    7. Using the GoPro CineForm codec in After Effects
  18. Working with other applications
    1. Dynamic Link and After Effects
    2. Working with After Effects and other applications
    3. Sync Settings in After Effects
    4. Collaborate with Team Projects
    5. Share and manage changes with Team Project collaborators
    6. Creative Cloud Libraries in After Effects
    7. Plug-ins
    8. CINEMA 4D and Cineware
  19. Memory, storage, performance
    1. Memory and storage
    2. Improve performance
    3. Preferences
    4. GPU and GPU driver requirements for After Effects

For information on the Refine Matte effect and the Roto Brush effect, see Roto Brush effect and Refine Matte effect reference.

Third-party effects in this category included with After Effects:

  • mocha shape effect

Matte Choker effect

The Matte Choker effect repeats a sequence of choking and spreading the matte to fill undesired holes (transparent areas) in opaque regions. The repetition is necessary because the entire matte must be choked and spread; the spreading fills the hole, but the edges of the matte must be choked back to preserve the matte shape.

The process of choking and spreading occurs in two stages, each with its own set of identical controls. Typically, stage two does the opposite of stage one. After a specified number of back-and-forth adjustments (which Matte Choker handles automatically), the hole is filled.

This effect works with 8-bpc and 16-bpc color.

Matte Choker effect: Shows areas of unwanted transparency after using Color Key that are removed with Matte Choker
Original (upper-left) shows areas of unwanted transparency after using Color Key (lower-left) that are removed with Matte Choker (lower-right).

Note:

You can use the Matte Choker effect to only blur the alpha channel. To use this effect as an alpha-channel blur, set Gray Level Softness to 100%.

Close a hole in a matte

  1. Select the layer, and choose Effect > Matte > Matte Choker.
  2. Set stage-one controls (the first three properties) to spread the matte as far as possible without altering its shape, as follows:

    Geometric Softness

    Specifies (in pixels) the largest spread or choke.

    Choke

    Sets the amount of choke. Negative values spread the matte; positive values choke it.

    Gray Level Softness

    Specifies how soft to make the edges of the matte. At 0%, the matte edges contain only fully opaque and fully transparent values. At 100%, the matte edges have a full range of gray values but may appear blurred.

  3. Set stage-two controls (the next three properties) to choke the matte by the same amount as the amount by which you spread it in stage one.
  4. (Optional) Use the Iterations property to specify how many times After Effects repeats the spread-and-choke sequence. You may need to try a few different settings so that the sequence is repeated as many times as necessary to close any unwanted holes.

Simple Choker effect

The Simple Choker effect shrinks or expands the edges of a matte in small increments to create a cleaner matte. The Final Output view displays the image with the effect applied, and the Matte view provides a black-and-white view of the image with black areas indicating transparency and white areas indicating opacity. Choke Matte sets the amount of choke. Negative values spread the matte; positive values choke it.

This effect works with 8-bpc, 16-bpc, and 32-bpc color.

Simple Choker effect: Contains unwanted edges after keying that are removed with Simple Choker
Original (upper-left) contains unwanted edges after keying (lower-left) that are removed with Simple Choker (lower-right).

Adobe logo

Sign in to your account