Motion Graphics Compositing Techniques

Question 1

What is compositing in motion graphics?

Accepted Answer

The process of combining multiple visual elements into a single frame

Answer

The process of creating 3D models for animation

Answer

The process of adding audio to video

Answer

The process of exporting finished videos

Question 2

Which technique removes a specific color from footage to allow another background to show through?

Accepted Answer

Chroma keying

Answer

Color correction

Answer

Rotoscoping

Answer

Motion tracking

Question 3

What is a matte in compositing?

Accepted Answer

A grayscale image that defines transparency or areas of inclusion and exclusion

Answer

A type of camera filter used during filming

Answer

A color correction tool in After Effects

Answer

A type of motion blur effect

Question 4

What is the purpose of a garbage matte in compositing?

Accepted Answer

To quickly eliminate large unwanted areas before applying a more precise key

Answer

To remove visual noise and grain from footage

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To add realistic shadows to composited elements

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To compress video files for export

Question 5

Which blending mode multiplies the color values of two layers, typically making the result darker?

Accepted Answer

Multiply

Answer

Screen

Answer

Overlay

Answer

Difference

Question 6

In After Effects, what is the difference between a track matte and a layer mask?

Accepted Answer

A track matte uses another layer's alpha or luminance to define transparency, while a mask uses drawn paths on the same layer

Answer

Track mattes use luminance while masks use only vector shapes

Answer

Track mattes only work with video, masks only work with images

Answer

There is no difference; they achieve the same result in the same way

Question 7

What does pre-compositing (pre-comping) accomplish in a compositing workflow?

Accepted Answer

It groups layers into a nested composition to simplify complex layer stacks and apply effects to multiple layers as a unit

Answer

It renders the composition to a video file before the final export

Answer

It optimizes the composition for faster real-time playback

Answer

It converts all layers to 3D layers for depth compositing