# TypesettingTools/Aegisub

Cross-platform advanced subtitle editor

Repository: https://github.com/TypesettingTools/Aegisub
Canonical: https://ross.abutalabs.com/products/aegisub
Homepage: http://www.aegisub.org
Language: C++
License: NOASSERTION
License Family: other
Last push: 2026-08-26T20:32:34+00:00

## Health v2 (maintenance only)
Score: 79/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 40, longevity 100
- inputs: {"age_days": 3079, "days_push": 7, "days_rel": 597, "gap_med": 12.0, "n_releases_24m": 3}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1928, forks 639 (observed 2026-08-28T04:05:55.797141+00:00)

## What it is
Aegisub is a free, cross-platform advanced subtitle editor for creating and modifying subtitles. It provides audio-based timing, powerful styling tools, and a built-in real-time video preview.

## Use cases
- time subtitles to audio
- create and edit subtitle files
- style and typeset subtitles with real-time video preview
- edit ASS/SSA karaoke subtitles
- translate and localize video subtitles

## When to choose
- you need advanced subtitle timing synced to audio
- you want fine-grained styling and typesetting for ASS subtitles
- you work with karaoke effects or fansubbing workflows

## When to avoid
- you only need simple SRT editing with a lightweight tool
- you need automated batch subtitle processing rather than interactive editing
- you want a web-based or headless subtitle converter

## Facets
- artifact type: application
- maturity: active
- function: editor, gui, audio-processing, video-processing, internationalization
- domain: media, desktop-applications, cross-platform
- platform: windows, cross-platform
- tags: subtitle-editor, subtitles, typesetting, karaoke, ass-format, fansubbing, localization, macos, linux, desktop

## Member repositories
- TypesettingTools/Aegisub (main) score 79

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:55.797141+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:09:06.790590+00:00, confidence not recorded.
  - readme: https://github.com/TypesettingTools/Aegisub (fetched 2026-08-28T04:05:55.797141+00:00, sha 77e2b4f00ed2)
  - homepage: http://www.aegisub.org (fetched 2026-08-29T10:48:35.143862+00:00, sha 1b7d475d9119)
  - site_page: https://aegisub.org/docs (fetched 2026-08-29T10:48:35.155192+00:00, sha 3639f4cbfa2d)
  - site_page: https://aegisub.org/changelog (fetched 2026-08-29T10:48:35.153212+00:00, sha 84fd2585cc4f)
- Data as of 2026-08-30T08:39:29.467469+00:00.