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How Do I Create a Custom Shape Mask in After Effects?

Published in After Effects Masking 2 mins read

Create custom shape masks in After Effects using the Shape or Pen tools to draw directly within the application, or by importing vector paths from programs like Adobe Illustrator or Photoshop.

Methods for Creating Custom Shape Masks

There are several ways to achieve this:

1. Drawing Directly in After Effects:

  • Use the Shape tool to quickly create basic shapes like circles, squares, or stars. These shapes can be instantly converted into masks.
  • Employ the Pen tool for more precise control and the creation of complex, custom shapes. This offers precise Bezier curve manipulation. Drawing a mask path is very similar to drawing a shape path.

2. Importing from External Programs:

  • Design your shape in Adobe Illustrator or Photoshop.
  • Copy the vector path from your design program.
  • Paste it into After Effects. This path can then be easily converted into a mask. This method is ideal for intricate designs.

3. Converting Shape Layers to Masks:

  • Create a shape layer in After Effects.
  • Select the shape layer's path property.
  • Copy and paste this path directly onto your mask path property on the layer you're working with. This allows you to leverage the animation capabilities of shape layers directly into your mask.

Example Workflow (Using the Pen Tool):

  1. Select the layer you want to mask.
  2. Choose the Pen tool.
  3. Click on the layer to create the points of your mask. Precisely manipulate the curve handles to adjust the shape.
  4. Close the path to form a complete shape. Your mask is created!

Additional Tips

  • Use keyframes to animate your mask's shape, size, or position over time. This allows for dynamic and engaging visual effects.
  • Experiment with feathering to soften the edges of your mask for a smoother transition.
  • Combine multiple masks on a single layer for intricate effects.
  • Refer to the Adobe After Effects help documentation (https://helpx.adobe.com/content/help/en/after-effects/using/creating-shapes-masks.html) for more advanced techniques.

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