# arcusmaximus/YTSubConverter

A tool for creating styled YouTube subtitles

Repository: https://github.com/arcusmaximus/YTSubConverter
Canonical: https://ross.abutalabs.com/products/ytsubconverter
Language: C#
License: MIT
License Family: permissive
Last push: 2026-07-27T15:48:45+00:00

## Health v2 (maintenance only)
Score: 86/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 94, release rhythm 68, longevity 100
- inputs: {"age_days": 2853, "days_push": 37, "days_rel": 53, "gap_med": 117.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1080, forks 79 (observed 2026-08-28T04:03:30.483643+00:00)

## What it is
A desktop tool that converts subtitle files into YouTube's SRV3/YTT format, enabling styled subtitles with colors, fonts, positioning, and karaoke timing. It primarily converts .ass files (from Aegisub) to .ytt, and also supports .sbv to .srt and .ttml to .ytt conversions.

## Use cases
- convert ass subtitles to youtube srv3 format
- add bold italic and colored styling to youtube subtitles
- create karaoke timed lyrics for youtube videos
- position subtitles anywhere on a youtube video
- convert sbv subtitles downloaded from youtube to srt
- convert ttml subtitles to ytt for more styling features

## When to choose
- you upload videos to YouTube and need styled subtitles beyond the built-in editor
- you author subtitles in Aegisub and want them to look the same on YouTube
- you need karaoke timing, ruby text, or vertical text in YouTube subtitles

## When to avoid
- you need subtitles for platforms other than YouTube
- you want a command-line or library API rather than a GUI tool
- you only need plain unstyled subtitles

## Facets
- artifact type: application
- maturity: active
- function: video-processing, file-system, developer-tools
- domain: media, web-development
- platform: windows, cross-platform
- tags: subtitles, youtube, ytt, srv3, ass-subtitles, subtitle-conversion, karaoke, video, macos, linux

## Member repositories
- arcusmaximus/YTSubConverter (main) score 86

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:30.483643+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 2026-08-30T06:51:26.650801+00:00, confidence not recorded.
  - readme: https://github.com/arcusmaximus/YTSubConverter (fetched 2026-08-28T04:03:30.483643+00:00, sha c5462cfa2ace)
- Data as of 2026-08-30T08:39:29.467469+00:00.