After Effects Project
Creative ProjectsAEP is an After Effects project storing compositions and resource references. Finished video requires rendering; first check images, footage, fonts and plug-ins.
- What it is used for
- Compositions, compositing and animation authoring
- What the file contains
- Binary data
All sections, questions and sources
Content reviewed： · Editor：Kai
Opening steps
Choose your environment or purpose to see its steps.
Menu labels and support vary by app, OS and version. Preserve the original before making changes.
Troubleshooting by symptom
- Missing footage: supply and relink the correct original files.
- Different image/text: inspect fonts, effects plug-ins and color settings.
- Short output: inspect composition duration, work area and render settings.
- Multiple compositions: distinguish helper compositions from the intended final output.
- Substituting a font changes layout: inspect spacing, line breaks and widths in the render.
- Older-version save changes effects: newer features may be omitted; compare a copy with a reference render.
AEP → rendered video / collected project
- Add the intended composition to a supported render workflow; inspect range, format and audio.
- For handoff, collect dependencies and review required media/environment.
- Verify render boundaries, text, transparency, sound and color; retain the editable project and assets.
Collection does not supply every plug-in/font; retain the original AEP.
AEP role and asset references
AEP holds editable compositions and references; missing media can prevent reproducing the render.
List assets, fonts, plugins and composition settings and retain a reference render for comparison.
Source for these steps：Adobe · Project types in After Effects / Adobe · Working with footage items in After Effects / Adobe · Basics of rendering and exporting in After Effects
Editable transfer versus rendered delivery
A render does not require the recipient’s editing application but does not retain equivalent layers, expressions or keyframes.
Verify original-media and external-effect requirements even in a collected copy; keep the source before resaving in another version.
Source for these steps：Adobe · Project types in After Effects / Adobe · Working with footage items in After Effects / Adobe · Basics of rendering and exporting in After Effects
Related-format differences
| Format | Main role | What to check |
|---|---|---|
| AEP | Standard project | Media/effect environment |
| AEPX | XML project | Distinct from generic XML data |
| AET | Reusable template | Creates a new project |
Handling and security
Projects may include expressions/dependencies; verify their source and avoid unfamiliar scripts or plug-ins.
Questions and answers
Is AEP a video?
It is an editing project; render the video separately.
Does collecting footage guarantee identical results?
No; fonts, plug-ins and version dependencies remain.
Does renaming to AEPX create XML?
No; use a supported save workflow.
Does opening AEP ensure rendering?
Required media/effects may be missing; inspect the output composition and dependencies.
Does Collect Files include every dependency?
Also check fonts/plugins and verify the collected copy on the destination.
Format facts: name, steward and MIME type
- Formal name
- After Effects Project
- Steward / specification
- Adobe
- MIME type
- Depends on the producer or server; an extension alone does not establish a MIME type.
Primary and official sources
- Software documentationProject types in After Effects
Explains XML project saving and project templates.
Adobe · Link checked： - Software documentationWorking with footage items in After Effects
Reference for locating and replacing missing footage.
Adobe · Link checked： - Software documentationBasics of rendering and exporting in After Effects
Documents rendering and collecting source footage.
Adobe · Link checked：