# fdk-aac を Homebrew, apk, apt, Nix でインストール

fdk-aac のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。

## インストール

```sh
sudo av install brew:fdk-aac
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install fdk-aac
```

  証拠: local Homebrew formula metadata

### Linux

- apk (92%):

```sh
sudo apk add fdk-aac
```

  証拠: Alpine Linux edge package indexes: fdk-aac from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz

- Debian apt (92%):

```sh
sudo apt install aac-enc
```

  証拠: Debian stable package indexes: aac-enc from https://deb.debian.org/debian/dists/stable/non-free/binary-amd64/Packages.xz

- Nix (92%):

```sh
nix profile install nixpkgs#fdk_aac
```

  証拠: nixpkgs package indexes: pkgs/by-name/fd/fdk_aac/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

## パッケージ情報

- **パッケージキー:** brew:fdk-aac
- **パッケージマネージャ:** Homebrew
- **バージョン:** 2.0.3
- **ソース概要:** Standalone library of the Fraunhofer FDK AAC code from Android
- **ホームページ:** <https://sourceforge.net/projects/opencore-amr/>
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- aac-enc (エイリアス)

## インストール挙動

- Bottle: 利用不可

## バージョンと鮮度

- ページ生成日: 2026-08-03
- マネージャ版: 2.0.3
## プロジェクトの歴史と使われ方

FDK AAC is the standalone packaging of Fraunhofer's FDK AAC encoder and decoder code as distributed through the opencore-amr project. In Unix package-manager terms it matters because it gives command-line and library users access to a widely used AAC implementation that originally arrived through the Android Open Source Project ecosystem rather than as a conventional desktop audio library.

### プロジェクトの歴史

The opencore-amr SourceForge project describes itself as audio codecs extracted from the Android Open Source Project and includes AMR, VisualOn AAC, and a modified Fraunhofer AAC decoder and encoder. The fdk-aac subproject changelog records an initial fdk-aac release with an autotools build system, VBR bitrate mode support, and an example encoder tool, followed by updates tracking Android-derived upstream source drops.

The project made a larger jump with the 2.0.0 release, where the changelog says the upstream source base moved to FDKv2 with new profiles and features plus numerous crash and fuzzing fixes. Later 2.0.x releases continued to focus on upstream refreshes, build-system maintenance, and hardening fixes.

### 採用の歴史

The supplied package facts show fdk-aac packaged across Homebrew, Alpine, Debian/Ubuntu under aac-enc, and Nix. SourceForge file listings also show continued download activity for modern fdk-aac tarballs, so the project is not just archival source code; it remains a packaging target for audio stacks that need AAC encoding or decoding.

Because AAC patent and licensing history made AAC implementations unevenly available across distributions, fdk-aac became one of the names package maintainers and media users recognize when they need a specific AAC implementation rather than a generic codec wrapper.

### 使われ方

Homebrew exposes the aac-enc executable from this package. Typical users do not treat fdk-aac as an end-user media application; they install it as a codec library or small encoder utility used by audio conversion workflows and other media packages.

### パッケージ好きにとっての重要性

Package nerds care about fdk-aac because it sits at the intersection of Android source drops, codec licensing, and Unix media plumbing. It is the kind of package whose formula name, binary name, and distribution policy can differ by ecosystem, which makes accurate metadata valuable.

### タイムライン

- 2012: fdk-aac 0.1.0 tarball published on SourceForge.
- 2018: fdk-aac 2.0.0 released with the FDKv2 upstream source base.
- 2023: fdk-aac 2.0.3 tarball published on SourceForge.

### Related projects

- opencore-amr hosts related Android-derived AMR codec code.
- vo-aacenc and vo-amrwbenc are sibling codec repositories under the same SourceForge project.

### ソース

- <https://sourceforge.net/projects/opencore-amr>
- <https://sourceforge.net/projects/opencore-amr/files/fdk-aac/>
- <https://sourceforge.net/p/opencore-amr/fdk-aac/ci/master/tree/ChangeLog?format=raw>
- <https://formulae.brew.sh/formula/fdk-aac>


## セキュリティノート

library-like package without higher-risk signals.

- **Geiger リスク:** グリーン / 低
- library-like package without higher-risk signals

## 他のパッケージマネージャ記録

- Debian apt - aac-enc - 2.0.3-1: normalized package name match | Debian stable package indexes: aac-enc from https://deb.debian.org/debian/dists/stable/non-free/binary-amd64/Packages.xz | Fraunhofer FDK AAC Codec Library - frontend binary | https://github.com/mstorsjo/fdk-aac
- Debian apt - libfdk-aac-dev - 2.0.3-1: normalized package name match | Debian stable package indexes: libfdk-aac-dev from https://deb.debian.org/debian/dists/stable/non-free/binary-amd64/Packages.xz | Fraunhofer FDK AAC Codec Library - development files | https://github.com/mstorsjo/fdk-aac
- Debian apt - libfdk-aac2t64 - 2.0.3-1: normalized package name match | Debian stable package indexes: libfdk-aac2t64 from https://deb.debian.org/debian/dists/stable/non-free/binary-amd64/Packages.xz | Fraunhofer FDK AAC Codec Library - runtime files | https://github.com/mstorsjo/fdk-aac
- Nix - fdk_aac: normalized package name match | nixpkgs package indexes: pkgs/by-name/fd/fdk_aac/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- apk - fdk-aac - 2.0.2-r4: normalized package name match | Alpine Linux edge package indexes: fdk-aac from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Fraunhofer FDK AAC codec library | https://gitlab.freedesktop.org/wtaymans/fdk-aac-stripped
- apk - fdk-aac-dev - 2.0.2-r4: normalized package name match | Alpine Linux edge package indexes: fdk-aac-dev from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Fraunhofer FDK AAC codec library (development files) | https://gitlab.freedesktop.org/wtaymans/fdk-aac-stripped
- apk - fdk-aac-doc - 2.0.2-r4: normalized package name match | Alpine Linux edge package indexes: fdk-aac-doc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Fraunhofer FDK AAC codec library (documentation) | https://gitlab.freedesktop.org/wtaymans/fdk-aac-stripped
- Ubuntu apt - aac-enc - 2.0.2-3~ubuntu4: installed executable or alias match | Ubuntu 24.04 LTS package indexes: aac-enc from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Fraunhofer FDK AAC Codec Library - frontend binary | https://gitlab.freedesktop.org/wtaymans/fdk-aac-stripped


## Combined YAML source

View the package source record on GitHub. [combined/fdk-aac.yml](https://github.com/mxcl/pkgdb/blob/main/combined/fdk-aac.yml)


## ソース

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- external package-manager database matches
- cross-ecosystem install command graph