YouTube Korean Subtitle Translator

Downloads a YouTube video, translates its captions to Korean with real context, burns them in.

Tested · Works

Test report

Verdict
Tested · Works
Score
8.8/10
Tested
Jul 15, 2026
Environment
Claude Code 2.x (agent harness)
Upstream re-checked
Aug 10, 2026 · 76f27b5

Ran the full pipeline live on a real 19s YouTube video end to end: download, SRT overlap-fix + sentence grouping (6 raw captions merged into 4 coherent units), Korean translation, timestamp merge, and libass burn-in all produced a real Korean-subtitled MP4; the only miss is the prerequisites section doesn't mention FFmpeg needs libass, which caused a cryptic 'No such filter: subtitles' failure on a minimal FFmpeg build with no actionable message from the script.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

  • Installs cleanly 5/5
  • Triggers reliably 5/5
  • Output vs. baseline 8/10
  • Docs & honesty 4/5

What YouTube Korean Subtitle Translator does

Downloads a YouTube video and its English captions with yt-dlp, has Claude translate the subtitle text using video metadata and web research for terminology consistency, then hardcodes the Korean subtitles into the video with FFmpeg. Trigger it with requests like 'add Korean subtitles to this YouTube video' or 'translate this YouTube video to Korean'.

How to install YouTube Korean Subtitle Translator

git clone https://github.com/Koomook/claude-skill-youtube-kr-subtitle
cd claude-skill-youtube-kr-subtitle
mkdir -p ~/.claude/skills
cp -r .claude/skills/youtube-kr-subtitle ~/.claude/skills/youtube-kr-subtitle

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger YouTube Korean Subtitle Translator

  • /youtube-kr-subtitle Downloads a YouTube video, translates its captions to Korean with real context, burns them in.

It also activates on plain-language prompts like these:

  • 유튜브 링크 줄게, 영어 자막을 한국어로 번역해서 영상에 입혀줄 수 있어?
  • 이 브이로그 유튜브 영상을 한국어 자막이 박힌 버전으로 만들어서 다시 보내줄 수 있어?
  • 영어 자막 달린 이 유튜브 강의 영상을 한국어로 번역해서 자막으로 넣어줘

Frequently asked questions

Is the YouTube Korean Subtitle Translator skill free?
Yes. The skill itself is free from Koomook/claude-skill-youtube-kr-subtitle. SkillProof publishes the install command and an independent test verdict at no cost.
Does YouTube Korean Subtitle Translator work with Claude Code?
We tested it with Claude Code 2.x (agent harness) on Jul 15, 2026. Verdict: Tested · Works. Ran the full pipeline live on a real 19s YouTube video end to end: download, SRT overlap-fix + sentence grouping (6 raw captions merged into 4 coherent units), Korean translation, timestamp merge, and libass burn-in all produced a real Korean-subtitled MP4; the only miss is the prerequisites section doesn't mention FFmpeg needs libass, which caused a cryptic 'No such filter: subtitles' failure on a minimal FFmpeg build with no actionable message from the script.
What is the YouTube Korean Subtitle Translator SkillProof Score?
8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 4/5.
How do I install YouTube Korean Subtitle Translator?
Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use YouTube Korean Subtitle Translator with Cursor, Copilot, Gemini CLI, Codex or other AI tools?
The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.