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brew install ctlprovider-native install command
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Install ctl with Homebrew
Programming language for digital color management. Version 1.5.5 via Homebrew; verified 2026-06-06.
install
Additional install commands
overview
Package summary
Programming language for digital color management
Project links
Commands and aliases
- ctlrender
- exr_ctl_exr
- exrdpx
history
Project history and usage
CTL, the Color Transformation Language, is a small domain-specific programming language for digital color management. The official repository presents it as a standalone project maintained in the ACES ecosystem and used to express portable color transforms.
Project history
CTL was designed so color transforms could be distributed as concise programs and interpreted consistently by color-management systems. Its syntax, concepts, and functions are documented in SMPTE RDD 15, and the repository contains the interpreter, libraries, ctlrender command, OpenEXR sample applications, tests, and documentation.
The current official source is maintained under the aces-aswf organization. The README explicitly separates CTL from ACES: ACES uses CTL for reference transforms, but CTL itself can describe any color transform.
Adoption history
The README frames CTL around interchange: two parties using the same CTL program and parameters can apply the identical transform to an image. Installation docs list Homebrew as the quickest macOS path, source builds for Linux, macOS, and Windows, and Docker as an isolated runtime.
How it is used
The main command-line workflow is ctlrender, which applies a CTL transform to image files such as OpenEXR inputs. The package also ships OpenEXR-oriented sample tools used in color-pipeline testing and conversion workflows.
Why package nerds care
CTL matters to package maintainers because it packages a film-industry color DSL together with C++ libraries, OpenEXR integration, command-line rendering tools, and optional containerized builds. It sits at the boundary between media standards, developer tooling, and reproducible color pipelines.
Timeline
- 2007: CTL language material was documented in SMPTE RDD 15.
- 2024: ctl-1.5.3 release published on GitHub.
- 2026: ctl-1.5.5 release published on GitHub.
Related projects
- CTL is maintained in the ACES project ecosystem and is commonly encountered alongside ACES, OpenEXR, and color-management tooling, while remaining a distinct language.
Sources
security posture
Risk level: yellow
generalized runtime or code generation signal.
Risk classifier
yellow risk · medium confidence · runtime
Why
- generalized runtime or code generation signal
Signals
- text:programming language
Install behavior
- No Homebrew bottle metadata was recorded.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
ctlrender | executable | indexed executable | Discovered from the local executable index. |
exr_ctl_exr | executable | indexed executable | Discovered from the local executable index. |
exrdpx | executable | indexed executable | Discovered from the local executable index. |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-08-03
manager version1.5.5
manager updated2026-06-06
local dataunknown
upstreamnot available
latest detectednot detected
- okNo freshness warnings were generated.
install metadata
Package metadata
| Package key | brew:ctl |
|---|---|
| Version | 1.5.5 |
| Package manager | Homebrew |
| Homepage | https://github.com/aces-aswf/CTL |
| Repository | https://github.com/aces-aswf/CTL |
| Last updated | 2026-06-06T04:08:13Z |
| Pulse | updated |
| Bottle | not recorded |
| Service | none declared |
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- curated package history
- pkgdb category and tag curation