| .AAF | Avid Technology | Archivos de video | Advanced Authoring Format File | Adobe After Effects | Adobe Systems Incorporated |
| .AEC | MAXON Computer | Archivos de video | Cinema 4D After Effects Import Composition File | Adobe After Effects | Adobe Systems Incorporated |
| .AEP | Adobe Systems Incorporated | Archivos de video | After Effects Project | Adobe After Effects | Adobe Systems Incorporated |
| .AES | Open Source | Archivos codificados | AES Crypt Encrypted File | Adobe After Effects | Adobe Systems Incorporated |
| .AET | Adobe Systems Incorporated | Archivos de video | After Effects Project Template | Adobe After Effects | Adobe Systems Incorporated |
| .AETX | Adobe Systems Incorporated | Archivos de video | After Effects XML Project Template | Adobe After Effects | Adobe Systems Incorporated |
| .AEX | Adobe Systems Incorporated | Archivos de plugin | After Effects Plug-in | Adobe After Effects | Adobe Systems Incorporated |
| .AMX | Valve | Archivos de plugin | AMX Mod Plugin File | Adobe After Effects | Adobe Systems Incorporated |
| .AOM | Adobe Systems Incorporated | Archivos de configuración | After Effects Output Module | Adobe After Effects | Adobe Systems Incorporated |
| .ARS | Adobe Systems Incorporated | Archivos de configuración | After Effects Render Settings File | Adobe After Effects | Adobe Systems Incorporated |
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