This video explains the difference between layer types, including Text, Solids, Cameras, Lights, Nulls, Shapes, and Adjustment layers.
Table of contents:
0:00 - Introduction
0:58 - Media Layers
2:08 - Text Layers
3:11 - Solids
4:24 - Lights
5:20 - Cameras
6:16 - Null Objects
7:07 - Shape Layers
7:47 - Adjustment Layers
8:12 - File layers
8:39 - Outro
This video was recorded in January 2016 using After Effects CC 2015. Features may differ from earlier or later versions of the software.