An AEP file, short for Adobe After Effects Project, is the native project file format used by Adobe After Effects, a leading software application for motion graphics, visual effects, and compositing. This file type stores all the information related to a specific After Effects project, including references to imported media assets (such as video clips, audio files, images, and other graphic elements), compositions, layers, effects, keyframes, expressions, masks, and various project settings. It's crucial to understand that an AEP file does not embed the actual media files themselves; instead, it maintains links to their locations on the user's computer or network. This allows for smaller project file sizes and greater flexibility in managing media. Designers and artists use AEP files to save their work in progress, enabling them to reopen and continue editing complex animations, visual effects sequences, and composite shots. Once a project is complete, the AEP file must be rendered or exported into a standard video format (like MP4, MOV, or AVI) to be viewable outside of After Effects or for distribution.