File encrypted by Advanced Encryption Package (AEP), a program used for securing files for storage and transfer; can be password protected and secured using one of the various encryption methods provided by the software.

An AEP file is a video editing project created with Adobe After Effects. It contains a video composition that includes audio, images, and video clips, a timeline, and various effects that can be applied to the movie. AEP files are used for creating professional-quality video productions.

AEP file open in Adobe After Effects 2020 The AEP file is one of two file types used to save video editing projects in After Effects. The main format is the AEP file, which is saved in binary format. The other format projects may be saved in is the .AEPX file, which is a text-based XML project file. After Effects projects may be saved as templates. One file type used to store templates is the .AET binary project and the .AETX XML project. To create an After Effects project, select File → New → New Project then click File → Save or Save As → Save As.... To open an After Effects project, select File → Open Project....