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oiiotool

Convert image formats and apply color transforms with OpenImageIO's oiiotool.

1|Updated Mar 7, 2026
Search Tags:#batch processing#image processing#format conversion#vfx#exr#color management#oiiotool
One-click install
npx skills add https://github.com/oumad/vfx-skills --skill oiiotool
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: oiiotool
Source: https://github.com/oumad/vfx-skills/tree/main/oiiotool
Command: npx skills add https://github.com/oumad/vfx-skills --skill oiiotool

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides a powerful command-line interface for complex image manipulation, format conversion, and color management tasks, essential for VFX and CGI workflows.

Core Features & Use Cases

  • Format Conversion: Effortlessly convert between numerous image formats (EXR, TIFF, PNG, JPEG, HDR, etc.).
  • Color Management: Apply OCIO/ACES color transforms, including display and view transforms for HDR and SDR content.
  • Image Operations: Resize, crop, rotate, composite, blur, sharpen, and perform advanced channel manipulations.
  • Sequence Processing: Batch process image sequences for rendering outputs or creating videos.
  • Use Case: Convert a sequence of high-dynamic-range EXR render outputs to a web-friendly MP4 video with proper ACES tone mapping applied.

Quick Start

Use the oiiotool skill to convert the file 'input.exr' to 'output.png' with ACES display transform.

Frequently Asked Questions about oiiotool

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I batch process EXR image sequences to apply color management and format conversion for VFX pipelines?▼

Batch processing EXR image sequences uses command-line image operations to apply OCIO/ACES color transforms and convert formats. This handles rendering outputs by applying color space transformations across multiple files for VFX and CGI pipelines.

What is the best way to convert high-dynamic-range EXR files to a web-friendly video format with ACES tone mapping?▼

Converting high-dynamic-range EXR files to web-friendly video requires applying ACES display transforms during sequence processing. This workflow outputs tone-mapped MP4 files suitable for web delivery from HDR rendering inputs.

Does oiiotool support OCIO and ACES color space transformations for HDR and SDR content?▼

OCIO and ACES color space transformations are supported for both HDR and SDR content. The tool applies display and view transforms, enabling proper color management for high-dynamic-range and standard-dynamic-range rendering outputs.

Do I need to install OpenImageIO separately to use this command-line image processing skill?▼

You need oiiotool installed and accessible in your system's PATH to use this command-line image processing skill. The external OpenImageIO dependency must be set up in your environment before executing operations.

How do I resize, composite, and perform channel manipulations on TIFF and PNG files from the command line?▼

Resizing, compositing, and channel manipulations on TIFF and PNG files are executed via command-line image operations. This approach handles image resizing, cropping, rotating, compositing, blurring, and sharpening for format conversion workflows.

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