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Vray ACES Convert

by SimonBourgeois·Workflow

Illustrative cover generated by AnyPlugins — no product screenshot available.

Why we like it

Earns its place in the scriptspot library for automating a tedious color-space migration across V-Ray materials, lights, and scatter bitmaps, with batch handling that extends to .mat files and proxy material matching.

What is Vray ACES Convert?

Vray ACES Convert is a 3ds Max script from SimonBourgeois for moving Gamma Workflow scenes over to ACES OCIO. It converts any kind of Vray material, along with VrayLight, Vray displacement modifiers, VrayFur, Chaos Scatter, and Forestpack bitmaps. The process runs automatically: it first turns any 3ds Max bitmap into a VrayBitmap, then sets diffuse, reflect, translucent, self illum, fog color, and environment bitmaps to srgb-srgb, or to none-raw when the bitmap is .exr or .hdr, while other bitmaps are set to none-raw.

Maps that need splitting are uninstanced even in complex setups such as ColorCorrection, Multitex, and Composite, and where possible the script creates only two versions of the same bitmap. You can apply it to the current selection or all objects, batch process max files from a folder with or without subfolders, browse and select one or more files, or batch convert .mat files.

Installation is drag and drop of the .mzp file into the 3ds Max viewport. It has been tested on 3ds Max 2024 and 2025, with support for 2026 added in update 2.2. Version 2.3 stores user settings when the script closes and reloads them on open.

Who is Vray ACES Convert best for?

Vray ACES Convert is best for 3ds Max artists working in V-Ray who need to migrate Gamma Workflow scenes and materials to ACES OCIO, including batch conversion across max files and .mat libraries.

How much does Vray ACES Convert cost?

Vray ACES Convert is completely free to download and use.

Key features

  • Converts Gamma Workflow scenes to ACES OCIO across Vray materials, VrayLight, Vray displacement modifiers, VrayFur, Chaos Scatter, and Forestpack bitmaps
  • Automatically converts 3ds Max bitmaps to VrayBitmap and assigns srgb-srgb or none-raw color spaces, with .exr and .hdr files set to none-raw
  • Uninstances (splits) maps in complex setups like ColorCorrection, Multitex, and Composite, creating only two versions of a bitmap where possible
  • Batch options for the current selection, all objects, a folder with or without subfolders, or one and multiple selected files
  • Batch converts .mat files, backing up and overriding the original when a matching .vrmesh is found, or adding a *_ACES.mat suffix otherwise
  • Stores user settings on close and reloads them on open

Tags

#V-Ray#ACES#OCIO#3ds Max#color management#batch conversion#materials

Frequently asked questions

What 3ds Max versions does Vray ACES Convert support?

Vray ACES Convert has been tested on 3ds Max 2024 and 2025, and update 2.2 added support for 3ds Max 2026. It works with V-Ray materials along with VrayLight, Vray displacement modifiers, VrayFur, Chaos Scatter, and Forestpack bitmaps, converting them from a Gamma Workflow scene to ACES OCIO. If you run a version outside this range, check the developer's page for the latest compatibility notes before relying on it in production.

How do I install Vray ACES Convert?

Vray ACES Convert installs by dragging and dropping the .mzp file into the 3ds Max viewport and following the on-screen instructions. The first time you launch it, the script asks you to generate a request code, which you send to the developer by email. Once your payment is validated, you receive a license that is tied to your computer name and CPU ID, so it runs only on that machine. If you switch computers or reinstall under a different name, the developer issues a new license.

Is Vray ACES Convert free?

Vray ACES Convert is listed here as free, and for current licensing terms you should check the developer's page. In practice, the first launch asks you to generate a request code to send to the developer, and once validated you receive a license tied to your computer name and CPU ID. That license runs only on the machine it was issued for, but if you change computers or reinstall under a different name, the developer provides a new one at no cost.

Can Vray ACES Convert batch process multiple files?

Vray ACES Convert offers several batch options beyond a single scene. You can apply the conversion to the current selection or to all objects, and you can batch process max files by pointing it at a folder, with or without subfolders. It can also browse and convert one or more selected files, and batch convert .mat files. When converting a .mat, if a matching .vrmesh sits in the same folder it backs up and overrides the original .mat; otherwise it appends a *_ACES.mat suffix.

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