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Convert Autodesk Color Transform Format to spi3d

  1. Download and install the latest version of Filestar.

  2. Right click on one or more Ctf file(s) on your desktop and select Convert with Filestar.

  3. Type convert to spi3d in the search box.

  4. Press Convert.

  5. Or let an AI agent do it: filestarcli -i file.ctf -c "convert to spi3d" (how).

Let your AI agent convert Autodesk Color Transform Format to SPI3D

Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.

Install Filestar and add it to your agents:

npm install -g filestar
filestarcli agent install

Or add it in one click:

Claude Code:

claude mcp add filestar -- npx -y [email protected] mcp

Then ask your agent:

“Convert the Autodesk Color Transform Format files in my Downloads folder to SPI3D”

Or run it yourself:

filestarcli -i file.ctf -c "convert to spi3d"

Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.

Can my AI agent convert Autodesk Color Transform Format to SPI3D?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.ctf -c "convert to spi3d" on your computer, so your files stay on it.

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between Autodesk Color Transform Format and .spi3d?

Name
Autodesk Color Transform Format
Sony Imageworks 3D LUT
Extension
.ctf
.spi3d
Format
Text
Text
Category
Color Lookup Table
Color Lookup Table
Developer
Autodesk
Sony Pictures Imageworks
Description
A CTF file of this kind is an Autodesk Color Transform Format file from Flame and OpenColorIO: XML that chains lookup tables, matrices and other colour operators, an extension of the Common LUT Format.
An SPI3D file is a three-dimensional colour lookup table in the text format of Sony Pictures Imageworks, used by OpenColorIO. It starts with SPILUT 1.0 and lists output colours with their grid indices.
MIME Type
application/xml
text/plain
Sample
sample.spi3d

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