avx

.avxAutodesk Animation Extension

Autodesk · 2010

Developer
Autodesk
Category
3D & CAD
MIME Type
application/vnd.autodesk.avx
First Released
2010
Open Format
No
File Signature
Not publicly documented or consistently identifiable across all versions.
At a Glance
.avx
Autodesk Animation Extension

AVX is a proprietary Autodesk format for storing detailed 3D animation data, commonly used for transferring and archiving motion within Autodesk software.

Reviewed on July 18, 2026
Compression
Compressed
Transparency
N/A
Editability
Low
Best for
Animation data

Key Features

  • Stores detailed 3D animation data, including keyframes and curves.
  • Supports skeletal animation and motion capture data.
  • Proprietary format optimized for Autodesk applications.
  • Facilitates transfer and archiving of animation projects.

Best For

  • Preserving intricate animation details.
  • Seamless integration with Autodesk animation software.
  • Efficient storage of large animation datasets.
  • Transferring animation between compatible Autodesk products.

Less Ideal For

  • General 3D model interchange (use FBX, OBJ, GLTF).
  • Storing static 3D assets.
  • Editing animation data in non-Autodesk software.
  • Web-based 3D rendering.

Common Use Cases

  • Transferring character animations between Maya and 3ds Max.
  • Archiving complex animation scenes from a production pipeline.
  • Storing motion capture data for later retargeting.
  • Exporting animation rigs for use in game development pipelines.

How to Open It

  1. Import AVX files directly into Autodesk Maya or 3ds Max.
  2. Use Autodesk's provided tools or plugins for specific animation workflows.
  3. Attempt to use third-party animation software that supports AVX import, though compatibility may vary.

What is a .avx file?

The AVX file format is primarily used by Autodesk software for storing animation data. It's a proprietary format designed to hold complex information related to character rigging, motion capture, and scene animation. AVX files are typically used to transfer animation sequences between different Autodesk applications or to archive animation projects. While not easily editable by external software, they are crucial for maintaining the integrity and fidelity of detailed 3D animations within the Autodesk ecosystem. This format ensures that complex animation nuances are preserved.

Programs That Open .avx Files

PlatformProgram
WindowsAutodesk MayaPaidOfficial
Autodesk 3ds MaxPaidOfficial
macOSAutodesk MayaPaidOfficial
LinuxAutodesk MayaPaidOfficial

How to Convert .avx Files

FormatMethod
.FBXAutodesk Maya Export, Autodesk 3ds Max Export
.ABCAutodesk Maya Export, Autodesk 3ds Max Export

Common Problems with .avx Files

⚠️ AVX files cannot be opened in non-Autodesk software.
Use Autodesk software like Maya or 3ds Max to import the AVX file, and then export it to a more universally compatible format like FBX or Alembic (.abc).
⚠️ Animation data appears corrupted or incomplete after import.
Ensure you are using the correct version of Autodesk software compatible with the AVX file, and check if any specific plugins or extensions are required for import.

Frequently Asked Questions

Is AVX a 3D model format?

No, AVX is specifically for storing 3D animation data, not the 3D model geometry itself.

Can I edit AVX files directly in Blender?

Typically, no. Blender does not natively support importing or exporting AVX files directly. You would need to convert the animation data to a format Blender supports, like FBX or Alembic (.abc).

What's the difference between AVX and FBX?

Both are used for animation data, but AVX is proprietary to Autodesk and focused on its internal pipelines, while FBX is a more widely adopted industry standard with broader compatibility across different software.

Technical Details

AVX files are binary in nature and contain specific animation curves, keyframes, and structural information for 3D models. They are designed for efficient storage and retrieval of complex animated sequences, often including data for skeletal animation and blend shapes. The format is tightly integrated with Autodesk's proprietary animation pipelines.

Did You Know?

AVX files are often used in conjunction with character rigs to transfer complex skeletal deformations.
The AVX format's design prioritizes the fidelity of motion capture data and procedural animation.

Security Information

AVX files are proprietary binary files from a trusted developer (Autodesk) and are generally safe. However, as with any file, avoid opening files from unknown or untrusted sources, as malicious software could theoretically be embedded within associated data.

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