aetx

.aetxAdobe After Effects Project (Binary)

Adobe · 2006

Developer
Adobe
Category
Video
MIME Type
application/vnd.adobe.aftereffects.project
First Released
2006
Open Format
No
File Signature
Not publicly documented or consistent across versions.
At a Glance
.aetx
Adobe After Effects Project (Binary)

.aetx is the binary project file format for Adobe After Effects, used to save and reopen motion graphics and visual effects projects.

Reviewed on June 7, 2026
Compression
Binary (optimized)
Transparency
N/A (project file, not an image/video output)
Editability
High
Best for
After Effects projects

Key Features

  • Stores all project elements including layers, effects, and keyframes.
  • Optimized binary structure for faster loading compared to .aep.
  • Native project file for Adobe After Effects.
  • Enables non-destructive editing of complex motion graphics.

Best For

  • Saving and reopening Adobe After Effects projects during production.
  • Maintaining the integrity of complex animation timelines and effects.
  • Ensuring compatibility with different versions of After Effects (within limits).
  • Projects requiring extensive visual effects and compositing.

Less Ideal For

  • Distributing final rendered videos (use MP4, MOV, etc.).
  • Sharing static images (use JPG, PNG, TIFF).
  • Storing raw or intermediate uncompressed footage.
  • Cross-platform compatibility with non-Adobe software.

Common Use Cases

  • Saving ongoing motion graphics projects in After Effects.
  • Archiving completed project files for future reference.
  • Collaborating on visual effects projects with other After Effects users.
  • Creating templates for reusable motion graphics sequences.

How to Open It

  1. Open Adobe After Effects.
  2. Go to File > Open and navigate to your .aetx file.
  3. Double-click the .aetx file if After Effects is set as the default application for this file type.

What is a .aetx file?

The .aetx file format is a binary project file used by Adobe After Effects. It stores all the information needed to reconstruct your motion graphics and visual effects project, including layer settings, keyframes, effects, and compositions. Unlike the older .aep format which is text-based, .aetx is optimized for faster loading and smaller file sizes. It's essentially the native working file for After Effects, allowing you to save your progress and continue editing complex animations and visual sequences.

Programs That Open .aetx Files

PlatformProgram
WindowsAdobe After EffectsPaidOfficial
macOSAdobe After EffectsPaidOfficial

How to Convert .aetx Files

FormatMethod
.AEPSave As in After Effects
.MP4Export Render Queue in After Effects
.MOVExport Render Queue in After Effects

Common Problems with .aetx Files

⚠️ File won't open
Ensure you have a compatible version of Adobe After Effects installed. Older versions may not support newer .aetx files.
⚠️ Project is slow or crashing
Check system requirements, free up RAM, or consider optimizing the project by pre-rendering complex sections.

Frequently Asked Questions

What is the difference between .aetx and .aep?

.aetx is a binary version of the After Effects project file, generally faster to load and smaller than the older text-based .aep format.

Can I edit an .aetx file without Adobe After Effects?

No, .aetx files are proprietary project files and can only be opened and edited within Adobe After Effects.

Technical Details

This format is a proprietary binary file that encapsulates project data, including compositions, layers, effects, masks, and timing information. It's designed for efficient storage and retrieval of After Effects project elements, differentiating it from the older, XML-based .aep format by its performance characteristics.

Did You Know?

The .aetx format was introduced to improve performance and file management for After Effects projects.
While .aetx is binary, the older .aep format is essentially XML, making it human-readable but less efficient for large projects.

Security Information

As a project file, .aetx itself doesn't typically pose security risks, but always ensure you download project files only from trusted sources to avoid potential malware embedded within scripts or linked assets.

Related Extensions