# 使用 Homebrew, scoop 安装 alass

查看 alass 的安装路径、可执行文件、元数据以及面向 AI 代理工作流的安全说明。

## 安装

```sh
sudo av install brew:alass
```

其他安装命令:

### macOS

- Homebrew (100%):

```sh
brew install alass
```

  证据: local Homebrew formula metadata

### Windows

- Scoop (92%):

```sh
scoop install main/alass
```

  证据: Scoop official bucket manifest trees: bucket/alass.json from https://api.github.com/repos/ScoopInstaller/Main/git/trees/master?recursive=1

## 软件包事实

- **软件包键:** brew:alass
- **软件包管理器:** Homebrew
- **版本:** 2.0.0
- **来源摘要:** Automatic Language-Agnostic Subtitle Synchronization
- **主页:** <https://github.com/kaegi/alass>
- **仓库:** <https://github.com/kaegi/alass>
- **已生成:** 2026-08-03T19:37:03+00:00

## 可执行文件

- alass-cli (别名)

## 安装行为

- Bottle: 不可用

## 版本和新鲜度

- 页面生成时间: 2026-08-03
- 管理器版本: 2.0.0
## 项目历史与用法

alass is a Rust command-line tool for Automatic Language-Agnostic Subtitle Synchronization. It aligns subtitle timing to a movie or to another subtitle file, correcting offsets, splits, and framerate differences without depending on the spoken language.

### 项目历史

The public GitHub repository was created in February 2017. The README ties the algorithmic basis to the author's bachelor's thesis and presentation, and notes that the program was previously called `aligner` before being renamed to `alass` because the old name was hard to find in search engines.

The workspace is split into `alass-core`, the reusable algorithm library, and `alass-cli`, the official command-line tool for end users. That split lets downstream code reuse the synchronization algorithm while package managers expose the practical CLI.

### 采用历史

Official releases provide Windows and Linux executables, while source builds use Rust and Cargo. The supplied package-manager facts show distribution through Homebrew as `alass` and Scoop as `main/alass`.

The tool's adoption sits in the media-maintenance niche: users with mismatched subtitle files, different cuts, advertisement breaks, or framerate drift can run a local binary instead of manually editing subtitle timestamps.

### 使用方式

Basic use is `alass movie.mp4 incorrect_subtitle.srt output.srt`, or using a reference subtitle instead of a video file. For video references, `ffmpeg` and `ffprobe` are used to extract audio, with paths overridable through `ALASS_FFMPEG_PATH` and `ALASS_FFPROBE_PATH`.

The README documents tuning with `--split-penalty` and a faster `--no-splits` mode when only a constant shift is desired. Supported subtitle formats include `.srt`, `.ssa`, `.ass`, and `.idx`, while common video formats are supported through FFmpeg.

### 为什么软件包爱好者会关心

alass is a neat package-manager specimen because it wraps a specialized media algorithm into a normal CLI install. The package saves users from compiling a Rust workspace and C voice-activity component just to fix one badly timed subtitle file.

It also shows the recurring package-manager pattern where the executable name differs from the crate/workspace internals: Homebrew users get `alass-cli`, while the human-facing project name remains simply `alass`.

### 时间线

- 2017: Public GitHub repository created.
- Initial project period: README documents the bachelor's thesis and presentation behind the algorithm.
- Later: Project renamed from `aligner` to `alass` for searchability.
- 2023: Repository metadata shows continued activity into late 2023.

### Related projects

- alass-core: reusable library crate containing the synchronization algorithm.
- alass-cli: official command-line tool for end users.
- FFmpeg and ffprobe: external tools used by alass to extract audio from video references.

### 来源

- <https://api.github.com/repos/kaegi/alass>
- <https://github.com/kaegi/alass>
- input source_facts.package-manager


## 安全说明

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

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

## 其他软件包管理器记录

- Scoop - main/alass: normalized package name match | Scoop official bucket manifest trees: bucket/alass.json from https://api.github.com/repos/ScoopInstaller/Main/git/trees/master?recursive=1


## Combined YAML source

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


## 来源

- 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