Creating Track Mattes
Grade 8th Grade · Technology · 45 min
What's Included
Learning Objective
I can create a track matte in After Effects to reveal or hide parts of a layer.
Warm-Up Video
Ayudh Creations · 7:26
Understanding Track Mattes in After Effects | Beginner Guide Tutorial
Guided Notes
3 key concepts
- 1
In After Effects, the alpha channel determines the opacity of a layer, where white indicates complete opacity, black indicates complete transparency, and shades of gray indicate partial transparency.
- 2
When using Alpha Matte in After Effects, the layer from which you call the alpha will be turned off, and the target layer will only be visible in the alpha section of the specified layer.
- 3
Luma matte is used when you don't have an alpha channel for a selection, and it uses the luminance or intensity of light emitted from a surface to create transparency; Luma Inverted Matte inverts the Luma.
Practice Questions
9 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“In After Effects, you have a layer of text and a video clip of clouds. Explain how to use an alpha track matte to make the text appear to be filled with the moving clouds.”
Complete Lesson Package
Get all 3 ready-to-use resources:
