omnicaptions

omni-captions-skills

Captions Made Easy — Claude Code Caption Skills

"I need bilingual captions for this Fireship vibe coding video https://youtube.com/watch?v=Tw18-4U7mts"

One sentence. Claude handles the download, transcription, and translation.

中文文档

Install

npx skills add https://github.com/lattifai/omni-captions-skills

/plugin marketplace add lattifai/omni-captions-skills
/plugin install omnicaptions@lattifai-omni-captions-skills

git clone https://github.com/lattifai/omni-captions-skills.git
claude --plugin-dir ./omni-captions-skills

Try It

❯ Make bilingual captions for this Fireship vibe coding video https://youtube.com/watch?v=Tw18-4U7mts

1
00:00:00,000 --> 00:00:03,200
Mass hysteria satisfies a deep human need.
群体性癔症满足了人类某种深层需求。

2
00:00:03,200 --> 00:00:07,440
Vibe coding is programming without actually writing any code yourself.
Vibe coding 就是不用自己写代码的编程方式。

Skills

Invoke via /omnicaptions:transcribe or /omnicaptions-transcribe

LaiCut: Precise Timing

Standard transcription gives "approximate" timestamps. LaiCut uses LattifAI Lattice-1 model to match text precisely to audio waveforms, achieving word-level accuracy.

Install LaiCut:

# Using uv (recommended, auto-configures package index)
uv pip install "omni-captions-skills[laicut]" --extra-index-url https://lattifai.github.io/pypi/simple/

# Using pip
pip install "omni-captions-skills[laicut]" --extra-index-url https://lattifai.github.io/pypi/simple/

Supported languages: English, Chinese, German, and mixed

Recommended workflow: Align before translate (translated text doesn't match original audio)

Setup

Gemini is only used for video transcription. When a video has no captions, you'll be prompted whether to transcribe — configure then. Translation uses Claude by default, works out of the box.

API keys are prompted automatically and saved to ~/.config/omnicaptions/config.json

OmniCaptions CLI Usage

# With captions: download → align → translate
omnicaptions download "https://youtube.com/watch?v=xxx"
omnicaptions LaiCut video.mp4 video.en.vtt -o video_LaiCut.srt
omnicaptions translate video_LaiCut.srt -l zh --bilingual

# Without captions: transcribe → align → translate
omnicaptions transcribe video.mp4
omnicaptions LaiCut video.mp4 video_GeminiUnd.md -o video_LaiCut.srt
omnicaptions translate video_LaiCut.srt -l zh --bilingual

Credits: @dotey for the transcription prompt | Built on lattifai-captions

MIT License