video-subtitles – OpenClaw Skill

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name: video-subtitles description: Generate SRT subtitles from video/audio with translation support. Transcribes Hebrew (ivrit.ai) and English (whisper), translates between languages, burns subtitles into video. Use for creating captions, transcripts, or hardcoded subtitles for WhatsApp/social media.

Video Subtitles

Generate movie-style subtitles from video or audio files. Supports transcription, translation, and burning subtitles directly into video.

Features

• Hebrew: ivrit.ai fine-tuned model (best Hebrew transcription)
• English: OpenAI Whisper large-v3
• Auto-detect: Automatically detects language and selects best model
• Translation: Translate Hebrew → English
• Burn-in: Hardcode subtitles into video (visible everywhere, including WhatsApp)
• Movie-style: Natural subtitle breaks (42 chars/line, 1-7s duration)

Quick Start

# Plain transcript
./scripts/generate_srt.py video.mp4

# Generate SRT file
./scripts/generate_srt.py video.mp4 --srt

# Burn subtitles into video (always visible)
./scripts/generate_srt.py video.mp4 --srt --burn

# Translate to English + burn in
./scripts/generate_srt.py video.mp4 --srt --burn --translate en

# Force language
./scripts/generate_srt.py video.mp4 --lang he    # Hebrew
./scripts/generate_srt.py video.mp4 --lang en    # English

Options

Flag	Description
--srt	Generate SRT subtitle file
--burn	Burn subtitles into video (hardcoded, always visible)
--embed	Embed soft subtitles (toggle in player)
--translate en	Translate to English
--lang he/en	Force input language
-o FILE	Custom output path

Output

• Default: Plain text transcript to stdout
• With --srt: Creates video.srt alongside input
• With --burn: Creates video_subtitled.mp4 with hardcoded subs

Requirements

• uv: Python package manager (auto-installs dependencies)
• ffmpeg-full: For burning subtitles (brew install ffmpeg-full)
• Models: ~3GB each, auto-downloaded on first use

Subtitle Style

• Font size 12, white text with black outline
• Bottom-aligned, movie-style positioning
• Max 42 chars/line, 2 lines max
• Natural breaks at punctuation and pauses