macOS
brew install libultrahdrlocal Homebrew formula metadata
brew / rang 610
Consultez les chemins d'installation, exécutables, métadonnées et notes de sécurité de libultrahdr pour les workflows d'agents IA.
installation
brew install libultrahdrlocal Homebrew formula metadata
sudo dnf install libultrahdrFedora Rawhide package metadata · libultrahdr · Source: dl.fedoraproject.org
nix profile install nixpkgs#libultrahdrnixpkgs package indexes · pkgs/by-name/li/libultrahdr/package.nix · Source: api.github.com
sudo pacman -S libultrahdrArch Linux sync databases · libultrahdr · Source: geo.mirror.pkgbuild.com
aperçu
Reference codec for the Ultra HDR format
historique
libultrahdr is Google's reference codec for Ultra HDR, a backward-compatible HDR image format that stores an SDR base image plus a gain map and metadata so legacy JPEG readers can still display the SDR rendition.
Android's Ultra HDR specification defines a JPEG-based format that encodes a logarithmic range gain map. libultrahdr implements the codec side: it can compute a gain map from SDR and HDR renditions, store the base image, gain map, and metadata, and decode them back into an HDR rendering on compatible displays.
The GitHub release history starts with version 1.0.0 on October 24, 2023. The 1.1.0 release in August 2024 added image-quality features, command-line tool updates, editing support, and ISO 21496-1 standard support. The 1.4.0 release in January 2025 added per-channel content boost configuration and alternate color-space handling.
Ultra HDR entered Android developer workflows with Android 14 API level 34 support for displaying Ultra HDR images. Android documentation tells app developers to detect gain maps and switch windows into HDR color mode when displaying these images.
Google's Android Developers Blog described Instagram as an early adopter that began implementing Ultra HDR in late September 2023, highlighting the format's movement from platform feature to high-volume social media use.
Developers use libultrahdr to encode HDR still images into a backward-compatible JPEG container and to decode Ultra HDR images for HDR-capable displays. The bundled ultrahdr_app command-line tool makes it useful for testing encodes, decodes, performance, and format behavior outside Android app code.
libultrahdr matters to package nerds because it turns a mobile platform media feature into a portable codec library that distributions can ship. It also captures the practical transition from SDR-only JPEG workflows to gain-map HDR images that still degrade cleanly in old software.
posture de sécurité
library-like package without higher-risk signals.
risque vert · confiance faible · appliance
Avant une utilisation sans surveillance par un agent, vérifiez si l'outil lit des identifiants en clair, écrit un état distant, publie des artefacts ou lance des plugins.
exécutables
| Commande | Type | Exposition | Note |
|---|---|---|---|
ultrahdr_app | cli | exécutable global |
fraîcheur
Ces signaux séparent l'âge de génération de la page, l'activité du gestionnaire de paquets et la comparaison avec les versions amont. Un retard de version n'est signalé que lorsqu'une URL de preuve et des versions comparables sont présentes.
https://github.com/google/libultrahdr
métadonnées d'installation
| Clé du paquet | brew:libultrahdr |
|---|---|
| Version | 1.5.1 |
| Gestionnaire de paquets | Homebrew |
| Page du gestionnaire de paquets | https://formulae.brew.sh/formula/libultrahdr |
| Page d'accueil | https://developer.android.com/media/platform/hdr-image-format |
| Dépôt | https://github.com/google/libultrahdr |
| Docs amont | https://developer.android.com/media/platform/hdr-image-format |
| Licence | Apache-2.0 |
| Archive source | https://github.com/google/libultrahdr/archive/refs/tags/v1.5.1.tar.gz |
| Dépendances | jpeg-turbo |
| Dépendances de compilation | cmake |
| Bouteille | disponible (sur arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| post-install Homebrew | non défini |
| Service | aucun déclaré |
faits du registre
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | libultrahdr |
| Version Scheme | 0 |
| Revision | 0 |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
correspondances dans les bases sources
Les correspondances proviennent d’index externes de gestionnaires de paquets et restent séparées des liens de paquets Automic Vault locaux.
libultrahdr
nix profile install nixpkgs#libultrahdrlibultrahdr 1.4.0^20251202git8cbc983-2.fc45
Reference codec for the Ultra HDR format
https://github.com/google/libultrahdr
sudo dnf install libultrahdrlibultrahdr-devel 1.4.0^20251202git8cbc983-2.fc45
Development files for libultrahdr
https://github.com/google/libultrahdr
sudo dnf install libultrahdr-devellibultrahdr 1.5.1-1
The reference codec for the Ultra HDR format
https://github.com/google/libultrahdr
sudo pacman -S libultrahdrpiste source
Cette page est servie par av-web depuis l'artéfact SQLite privé des paquets généré par scripts/generate-pkg-sqlite.py.
View the package source record on GitHub.