2
Table Of Contents
- Motion User Manual
- Contents
- Motion 2 Documentation and Resources
- Getting To Know Motion
- Creating and Managing Projects
- Creating New Projects
- Managing Projects
- Editing Project Properties
- Browsing Media Files in Motion
- File Types Supported by Motion
- Adding Media to Your Project
- Managing Objects in Your Project
- Deleting Objects From a Project
- Exchanging Media in a Project
- Object Media Tab Parameters
- Using Media in the Library
- Organizing Layers and Objects in Motion
- The Background of Your Project
- Selecting Objects and Layers in the Layers Tab
- Reorganizing Objects in the Layers Tab
- Nesting Layers Inside Other Layers
- Grouping and Ungrouping Objects
- Showing and Hiding Layers and Objects
- Fixing the Size of a Layer
- Locking Layers and Objects
- Collapsing and Uncollapsing Layer Hierarchies
- Renaming Layers
- Searching for Layers and Objects
- Sorting Layers and Objects in the Media Tab
- Customizing and Creating New Templates
- Basic Compositing
- Using the Timeline
- Using Behaviors
- Keyframes and Curves
- Using Text
- Working With Particles
- The Anatomy of a Particle System
- Using Particle Systems
- Creating Graphics and Animations for Particle Systems
- Advanced Particle System Controls
- Animating Objects in Particle Systems
- Using Behaviors With Particle Systems
- Applying Filters to Particle Systems
- Particle System Examples
- Saving Custom Particle Effects to the Library
- Using the Replicator
- The Difference Between the Replicator and a Particle System
- The Anatomy of the Replicator
- Using the Replicator
- Advanced Replicator Controls
- Animating Replicator Parameters
- Using the Sequence Replicator Behavior
- Using Behaviors With Replicators
- Applying Filters to Replicators
- Saving Custom Replicators to the Library
- Using Filters
- About Filters
- Working With Filters
- An Introduction to Filters
- Working With Filters
- Enabling, Renaming, and Locking Filters
- Copying, Pasting, and Moving Filters
- Reordering Filters
- Changing Filter Timing
- Blur Filters
- A Fun Effect That Can Be Used With All the Blur Filters
- Border Filters
- Color Correction Filters
- Distortion Filters
- Glow Filters
- Keying Filters
- Matte Filters
- Sharpen Filters
- Stylize Filters
- Tiling Filters
- Working With Third-Party Filters
- Working With Generators
- Using Shapes and Masks
- Working With Audio
- Exporting Motion Projects
- Keyboard Shortcuts
- Video and File Formats
- Supported File Formats
- Standard Definition vs. High Definition Video Formats
- Popular Video Codecs for File Exchange
- What Is Field Order?
- Using Square or Nonsquare Pixels When Creating Graphics
- Differences in Color Between Computer and Video Graphics
- Using Fonts and Creating Line Art for Video
- Scaling Imported High-Resolution Graphics
- Creating Graphics for HD Projects
- Integration With Final Cut Pro
- Using Gestures
- Index
Chapter 12 Using Shapes and Masks 871
Holdout Masks
Sometimes, while pulling a key, you lose part of the image you’re trying to keep. This
can happen when the color of the subject’s clothes is too close to the color of the
background being keyed out, or when you need to use keying values that are too
aggressive. In this example, the shadows on the elephant’s face are accidentally getting
keyed along with the background.
In these cases, you can duplicate the original object, mask the part of the subject that’s
being incorrectly keyed, and composite it over the keyed version to fill it back in.
Note: The Spill Suppression filter can modify the color of the foreground subject as
well. If you’re using the Spill Suppression filter on the keyed object, you may have to
apply the same filter to the holdout mask object to make sure the color matches.
To create a holdout mask:
1 Key and mask the foreground subject.
For more information about using Motion’s keying filters, see “
Keying Filters” on
page 760.
2 Duplicate the keyed object, then move it so that it appears above the original object in
the Layers tab or Timeline.
3 Mask the area of the foreground that is incorrectly keyed. Make sure that the mask is
entirely within the subject being keyed.
01112.book Page 871 Sunday, March 13, 2005 10:36 PM