Summary  
This chapter introduces how to apply a set of effects to multiple elements simultaneously by using a shared parent layer that propagates the effects downward, and how to encapsulate groups of elements into a single composite module to simplify and organize complex structures.

General domain of usage  
Video compositing

There are two essential tools for managing effects across multiple layers — **Adjustment Layers** and **Pre-Comps**. These features help you organize your project and apply changes more efficiently.

**Adjustment Layer** looks like an ordinary empty layer, but in reality, it applies all the effects added to it to all the layers below.

**Pre-Comp** is essentially a smaller composition inside your main composition. As your project grows in complexity, pre-composing groups of layers helps keep your main composition cleaner and improves workflow efficiency.

Definition

**In this chapter, you've learned**:
- How to use Adjustment layers to apply effects to multiple layers;
- How to Pre-Compose layers to simplify and organize complex projects;
- How these tools improve workflow and project management.


What is the function of an Adjustment Layer in After Effects?


What is the main purpose of Pre-Composing layers?

Ce cours offre une introduction complète à Adobe After Effects, couvrant les outils et techniques essentiels pour l’animation, le motion design et les effets visuels. Vous pratiquerez de manière précise, en apprenant à réaliser des animations complètes et des transitions avancées dans des chapitres dédiés. À la fin, vous maîtriserez la création d’animations dynamiques et de contenus vidéo de haute qualité à travers des projets pratiques.

Découvrez l’interface principale et les fonctionnalités d’After Effects, en abordant la navigation dans les compositions, les calques et les outils essentiels. Approfondissez l’organisation efficace des projets et développez une compréhension solide des transformations de base, constituant le socle pour des travaux d’animation plus avancés.

Adjusment Layer and Pre-Compose

Mentioned shortcuts

1. What is the function of an Adjustment Layer in After Effects?

2. What is the main purpose of Pre-Composing layers?