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Compositing and transparency overview and resources

  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. After Effects for Apple silicon
    9. Planning and setup
  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. Detect edit points using Scene Edit Detection
    8. XMP metadata
  7. 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
      5. Animate faster and easier using the Properties panel
  8. Drawing, Painting, and Paths
    1. Overview of shape layers, paths, and vector graphics
    2. Paint tools: Brush, Clone Stamp, and Eraser
    3. 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. Layers, Markers, and Camera
    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, Keyframes, 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 and masks
    3. Track Mattes and Traveling Mattes
  12. Adjusting color
    1. Color basics
    2. Color management
    3. Color Correction effects
    4. OpenColorIO and ACES color management
  13. Effects and Animation Presets
    1. Effects and animation presets overview
    2. Effect list
    3. Effect Manager
    4. Simulation effects
    5. Stylize effects
    6. Audio effects
    7. Distort effects
    8. Perspective effects
    9. Channel effects
    10. Generate effects
    11. Time effects
    12. Transition effects
    13. The Rolling Shutter Repair effect
    14. Blur and Sharpen effects
    15. 3D Channel effects
    16. Utility effects
    17. Matte effects
    18. Noise and Grain effects
    19. Detail-preserving Upscale effect
    20. Obsolete effects
  14. Expressions and Automation
    1. Expressions
      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. Advanced 3D Renderer
    5. Import and add 3D models to your composition
    6. Import 3D models from Creative Cloud Libraries
    7. Image-Based Lighting
    8. Extract and animate lights and cameras from 3D models
    9. Tracking 3D camera movement
    10. Cast and accept shadows
    11. Embedded 3D model animations
    12. Shadow Catcher
    13. 3D depth data extraction
    14. Modify materials properties of a 3D layer
    15. Work in 3D Design Space
    16. 3D Transform Gizmos
    17. Do more with 3D animation
    18. Preview changes to 3D designs real time with the Mercury 3D engine
    19. 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. H.264 Encoding in After Effects
    3. Export an After Effects project as an Adobe Premiere Pro project
    4. Converting movies
    5. Multi-frame rendering
    6. Automated rendering and network rendering
    7. Rendering and exporting still images and still-image sequences
    8. 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
      1. Export After Effects project as Premiere Pro project
    3. Sync Settings in After Effects
    4. Creative Cloud Libraries in After Effects
    5. Plug-ins
    6. Cinema 4D and Cineware
  19. Collaboration: Frame.io, and Team Projects
    1. Collaboration in Premiere Pro and After Effects
    2. Frame.io
      1. Install and activate Frame.io
      2. Use Frame.io with Premiere Pro and After Effects
      3. Frequently asked questions
    3. Team Projects
      1. Get Started with Team Projects
      2. Create a Team Project
      3. Collaborate with Team Projects
  20. Memory, storage, performance
    1. Memory and storage
    2. How After Effects handles low memory issues while previewing    
    3. Improve performance
    4. Preferences
    5. GPU and GPU driver requirements for After Effects
  21. Knowledge Base
    1. Known issues
    2. Fixed issues
    3. Frequently asked questions
    4. After Effects and macOS Ventura
    5. How After Effects handles low memory issues while previewing

Compositing overview

To create a composite from multiple images, you can make parts of one or more of the images transparent so that other images can show through. You can make portions of a layer transparent using any of several features in After Effects, including the following:

To make an entire layer uniformly transparent or semi-transparent, modify its Opacity property.

Layers can also be composited together without modifying the transparency of the layers themselves. For example, you can use blending modes or some of the Channel effects to blend image data from multiple layers into a composite. (See Blending modes and layer styles and Channel effects.)

After Effects also includes the mocha shape for After Effects (mocha shape AE) plug-in, which converts paths from mocha-AE into mattes in After Effects. (See Resources for Imagineer mocha shape for After Effects.)

Adobe Photoshop is an excellent application for performing many compositing tasks, including defining areas of transparency using its selection and painting tools. You can use Adobe Photoshop together with After Effects for optimum efficiency and best results when doing compositing work.

Online resources for compositing

Mark Christiansen provides a detailed overview of compositing—covering masks, mattes, blending modes, and alpha channels—in a chapter from his After Effects Studio Techniques book posted on the Adobe Press website.

Rich Young collects tutorials and resources for creating light wraps on the After Effects Portal website.

Rich Young collects resources and tutorials for various methods of creating vignettes.

Chris Zwar provides tips on color keying and compositing on his website.

Compositing fire, explosions, muzzle flashes

Mark Christiansen provides tips and detailed techniques for creating and compositing fire, explosions, muzzle flashes, bullet hits, and energy blasts in the “Pyrotechnics: Creating Fire, Explosions, and Energy Phenomena in After Effects” chapter of After Effects Studio Techniques on the Peachpit Press website.

Compositing fog, smoke, and clouds

Mark Christiansen provides tips and detailed techniques for creating and compositing fog, smoke, mist, rain, and snow in the “Climate: Air, Water, Smoke, Clouds in After Effects” chapter of After Effects Studio Techniques on the Peachpit Press website.

Daniel Broadway provides tips for compositing fog or mist into a scene on his website.

 Adobe

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