Adobe Plug-ins are small software modules—with filename extensions such as .aex, .pbk, and .pbg—that add functionality to an application.[1]
Format Information
AEX files are executables on Windows and identify as PRONOM fmt/900, but a bundled app on MacOS.
References
- ↑ https://helpx.adobe.com/after-effects/using/effects-animation-presets-overview.html