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An AET file is commonly treated as a reusable AE starting project, letting users open it and save a fresh project each time to preserve the template, and it contains the full design of the animation—compositions, timelines, layer structures, keyframes, effects, expressions, cameras, lights, render settings, along with organizational components such as folder layouts and interpretation rules.

An AET usually does not carry the actual footage; instead it holds references to external video, audio, and images, which is why template packs often come zipped with an assets/Footage folder and why missing-file dialogs appear if media gets excluded, and since AETs may require certain fonts or plugins, opening them on another system can trigger substituted fonts until you install or relink what’s needed, with the added note that file extensions can overlap, so confirming the true source via "Opens with" or the file’s origin folder is the best way to know what program created it.

An AEP file functions as the main project you keep modifying, holding all your comps, effects, and imported media, whereas an AET is intended as a template, meaning you reopen an AEP to keep editing but open an AET to form a new project so you don’t overwrite the template.

That’s why AETs are widely used for packaged motion-graphics templates such as intros, lower-thirds, and slideshows: the creator keeps the AET as the master and each time a new video is needed you open it, immediately Save As a new project (becoming your own AEP), then swap text, colors, logos, and media, and although both formats can store the same project elements—comps, layers, keyframes, effects, expressions, cameras/lights, and settings—and both usually reference external footage, the AET is built to protect the master for repeatable work while the AEP serves as the editable file you keep updating.

An AET file is meant to store the framework and behavior of a motion-graphics project rather than the footage itself, offering compositions with resolution, frame rate, duration, and nesting, and keeping the entire timeline of text, shape, solid, adjustment, and precomp layers, with properties such as position, scale, rotation, opacity, masks, mattes, blending modes, parenting, and all animation elements including keyframes, easing curves, markers, and optional expressions.

In case you loved this short article and you would want to receive more information regarding AET file opening software generously visit our own webpage. On top of that, the template stores all effects and their settings—color correction, blurs, glows, distortions, transitions, and more—along with any 3D setup such as cameras, lights, 3D layer properties, and render/preview settings, plus project-level organization like folders, label colors, interpretation rules, and sometimes proxies, but it typically does not bundle full footage, images, audio, fonts, or plugins, instead keeping links and dependencies that may trigger missing-asset or missing-plugin warnings on another computer until everything is relinked or installed.