# a52dec を Homebrew, apk, dnf, MacPorts, Nix, pacman, zypper, apt でインストール

a52dec 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:a52dec
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install a52dec
```

  証拠: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install a52dec
```

  証拠: MacPorts ports tree: audio/a52dec/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

### Linux

- apk (92%):

```sh
sudo apk add a52dec
```

  証拠: Alpine Linux edge package indexes: a52dec from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz

- dnf (92%):

```sh
sudo dnf install a52dec
```

  証拠: Fedora Rawhide package metadata: a52dec from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst

- Nix (92%):

```sh
nix profile install nixpkgs#a52dec
```

  証拠: nixpkgs package indexes: pkgs/by-name/a5/a52dec/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

- pacman (92%):

```sh
sudo pacman -S a52dec
```

  証拠: Arch Linux sync databases: a52dec from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz

- zypper (92%):

```sh
sudo zypper install a52dec
```

  証拠: openSUSE Tumbleweed package metadata: a52dec from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst

- Debian apt (92%):

```sh
sudo apt install liba52-0.7.4
```

  証拠: Debian stable package indexes: liba52-0.7.4 from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

## パッケージ情報

- **パッケージキー:** brew:a52dec
- **パッケージマネージャ:** Homebrew
- **バージョン:** 0.8.0
- **ソース概要:** Library for decoding ATSC A/52 streams (AKA 'AC-3')
- **ホームページ:** <https://git.adelielinux.org/community/a52dec/>
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- a52dec (エイリアス)
- extract_a52 (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: 0.8.0
## プロジェクトの歴史と使われ方

a52dec is the command-line test decoder and distribution package for liba52, a C library for decoding ATSC A/52 audio streams, also known as AC-3.

### プロジェクトの歴史

The project started publicly as ac3dec in 1999 and evolved into a52dec/liba52 in 2001. The official ChangeLog records the first public ac3dec release in June 1999, the 0.7.0 liba52-era release in August 2001, and the 0.7.4 release in July 2002.

The project then had a very long quiet period after the 2004 0.7.5 development snapshot. In 2022, Adelie Linux imported the historically available SourceForge code into Git, declared the Adelie GitLab URL canonical for source control and issue tracking, and took over maintenance while trying to minimize churn.

### 採用の歴史

The README names xine, VideoLAN, MPlayer, FFmpeg, drip, and GStreamer as projects that used liba52, which explains why distributions kept shipping a small standalone a52dec package long after upstream development slowed.

### 使われ方

The a52dec program decodes ATSC A/52 files and can demultiplex MPEG-1 and MPEG-2 program streams. Typical use is running a52dec against an AC-3/A52 file, with options for multiplexed streams, output layer selection, optimization control, and dynamic range compression.

### パッケージ好きにとっての重要性

a52dec is interesting to package maintainers because it is a classic codec-library package with a tiny CLI, old CVS-era history, GPL licensing, dormant upstream years, and a later distribution-led maintenance handoff.

### タイムライン

- 1999: First public ac3dec release.
- 2001: a52dec/liba52 0.7.0 release introduces a new library interface and major speedups.
- 2002: a52dec 0.7.4 release marks liba52 as fully reentrant.
- 2004: a52dec 0.7.5 development snapshot adds fixed-point support and other improvements.
- 2022: a52dec 0.8.0 imports historical SourceForge code into Git and updates the maintenance situation.

### Related projects

- Related users and peers include xine, VideoLAN/VLC, MPlayer, FFmpeg, GStreamer, and other media playback or transcoding projects that needed AC-3/A52 decoding.

### ソース

- <https://git.adelielinux.org/community/a52dec/-/raw/current/ChangeLog>
- <https://git.adelielinux.org/community/a52dec/-/raw/current/README>
- <https://git.adelielinux.org/community/a52dec/-/raw/current/configure.ac>


## セキュリティノート

broad file, network, media, or database tool signal.

- **Geiger リスク:** blue / 中
- broad file, network, media, or database tool signal

## 他のパッケージマネージャ記録

- Debian apt - liba52-0.7.4 - 0.7.4-20+b3: normalized package name match | Debian stable package indexes: liba52-0.7.4 from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | library for decoding ATSC A/52 streams | http://liba52.sourceforge.net/
- Debian apt - liba52-0.7.4-dev - 0.7.4-20+b3: normalized package name match | Debian stable package indexes: liba52-0.7.4-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | library for decoding ATSC A/52 streams (development) | http://liba52.sourceforge.net/
- Nix - a52dec: normalized package name match | nixpkgs package indexes: pkgs/by-name/a5/a52dec/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- Ubuntu apt - liba52-0.7.4 - 0.7.4-20build1: normalized package name match | Ubuntu 24.04 LTS package indexes: liba52-0.7.4 from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | library for decoding ATSC A/52 streams | http://liba52.sourceforge.net/
- Ubuntu apt - liba52-0.7.4-dev - 0.7.4-20build1: normalized package name match | Ubuntu 24.04 LTS package indexes: liba52-0.7.4-dev from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | library for decoding ATSC A/52 streams (development) | http://liba52.sourceforge.net/
- apk - a52dec - 0.8.0-r11: normalized package name match | Alpine Linux edge package indexes: a52dec from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | A free library for decoding ATSC A/52 streams. | https://liba52.sourceforge.net/
- apk - a52dec-dev - 0.8.0-r11: normalized package name match | Alpine Linux edge package indexes: a52dec-dev from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | A free library for decoding ATSC A/52 streams. (development files) | https://liba52.sourceforge.net/
- apk - a52dec-doc - 0.8.0-r11: normalized package name match | Alpine Linux edge package indexes: a52dec-doc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | A free library for decoding ATSC A/52 streams. (documentation) | https://liba52.sourceforge.net/
- apk - a52dec-static - 0.8.0-r11: normalized package name match | Alpine Linux edge package indexes: a52dec-static from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | A free library for decoding ATSC A/52 streams. (static library) | https://liba52.sourceforge.net/
- dnf - a52dec - 0.7.4-54.fc45: normalized package name match | Fedora Rawhide package metadata: a52dec from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | Small test program for liba52 | http://liba52.sourceforge.net
- dnf - liba52 - 0.7.4-54.fc45: normalized package name match | Fedora Rawhide package metadata: liba52 from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | A free ATSC A/52 stream decoder, also known as AC-3 or AC3 | http://liba52.sourceforge.net
- dnf - liba52-devel - 0.7.4-54.fc45: normalized package name match | Fedora Rawhide package metadata: liba52-devel from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | Development files for liba52 | http://liba52.sourceforge.net
- pacman - a52dec - 0.8.0-3: normalized package name match | Arch Linux sync databases: a52dec from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | Library for decoding ATSC A/52 (AC-3) audio streams | https://git.adelielinux.org/community/a52dec/
- zypper - a52dec - 0.8.0-1.10: normalized package name match | openSUSE Tumbleweed package metadata: a52dec from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | ATSC A/52 stream decoder library | https://git.adelielinux.org/community/a52dec/
- zypper - liba52-0 - 0.8.0-1.10: normalized package name match | openSUSE Tumbleweed package metadata: liba52-0 from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | ATSC A/52 stream decoder library | https://git.adelielinux.org/community/a52dec/
- zypper - liba52-0-32bit - 0.8.0-1.10: normalized package name match | openSUSE Tumbleweed package metadata: liba52-0-32bit from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | ATSC A/52 stream decoder library | https://git.adelielinux.org/community/a52dec/


## Combined YAML source

View the package source record on GitHub. [combined/a52dec.yml](https://github.com/mxcl/pkgdb/blob/main/combined/a52dec.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