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🦀 ClawHub

Youtube Transcriber

by @edisonchenai

One-command YouTube video transcription. Automatically downloads audio and transcribes using OpenAI Whisper API — works even when YouTube subtitles are disab...

Versionv1.0.0

Downloads686

Installs2

#writing #video #audio #legal #automation

View on ClawHub →

TERMINAL

clawhub install youtube-transcriber

📖 About This Skill

name: youtube-transcriber description: One-command YouTube video transcription. Automatically downloads audio and transcribes using OpenAI Whisper API — works even when YouTube subtitles are disabled. Use when asked to "transcribe this video", "get transcript", "what does this video say", or when YouTube captions are unavailable.

YouTube Transcriber

One-command transcription for any YouTube video — even when subtitles are disabled.

How it works: 1. Tries to fetch existing YouTube subtitles first (free, instant) 2. If subtitles are disabled/unavailable → downloads audio → transcribes via OpenAI Whisper API

Prerequisites

yt-dlp — brew install yt-dlp or pip install yt-dlp

ffmpeg — brew install ffmpeg

OPENAI_API_KEY environment variable set

Usage

# Basic — auto-detect best method
{baseDir}/scripts/transcribe.sh "https://www.youtube.com/watch?v=VIDEO_ID"
Specify language (improves accuracy for non-English)
{baseDir}/scripts/transcribe.sh "https://www.youtube.com/watch?v=VIDEO_ID" --lang zh
Custom output path
{baseDir}/scripts/transcribe.sh "https://www.youtube.com/watch?v=VIDEO_ID" --out /tmp/transcript.txt
Force Whisper (skip subtitle check)
{baseDir}/scripts/transcribe.sh "https://www.youtube.com/watch?v=VIDEO_ID" --force-whisper
Keep downloaded audio file
{baseDir}/scripts/transcribe.sh "https://www.youtube.com/watch?v=VIDEO_ID" --keep-audio

Options

| Option | Description | Default | |--------|-------------|---------| | --lang | Language hint (ISO 639-1: en, zh, ja, ko, etc.) | auto-detect | | --out | Output transcript file path | /tmp/yt_transcript_.txt | | --force-whisper | Skip subtitle check, always use Whisper API | off | | --keep-audio | Keep the downloaded audio file after transcription | off (deletes audio) | | --audio-bitrate | Audio compression bitrate | 64 |

`How It Works`

YouTube URL
    │
    ├─► Try yt-dlp subtitles (free, instant)
    │       │
    │       ├─ Found → Clean & output transcript ✓
    │       │
    │       └─ Not found / disabled
    │               │
    │               ▼
    └─► Download audio (yt-dlp + ffmpeg)
            │
            ├─ Compress to mono, low bitrate (fit 25MB API limit)
            │
            ▼
        OpenAI Whisper API → transcript ✓

`Cost`

With subtitles available: Free (uses existing captions)


Whisper API: ~$0.006/minute of audio → 23-min video ≈ $0.14
Supported
Any YouTube video URL (full URL, youtu.be short link, or video ID)
All languages supported by Whisper (99+ languages)
Videos up to ~4 hours (audio compressed to fit 25MB API limit)
Troubleshooting
403 from YouTube: Update yt-dlp (pip install -U yt-dlp)
File too large for Whisper: Lower bitrate with --audio-bitrate 32
Missing API key: Set OPENAI_API_KEY environment variable

`💡 Examples`

# Basic — auto-detect best method
{baseDir}/scripts/transcribe.sh "https://www.youtube.com/watch?v=VIDEO_ID"
Specify language (improves accuracy for non-English)
{baseDir}/scripts/transcribe.sh "https://www.youtube.com/watch?v=VIDEO_ID" --lang zh
Custom output path
{baseDir}/scripts/transcribe.sh "https://www.youtube.com/watch?v=VIDEO_ID" --out /tmp/transcript.txt
Force Whisper (skip subtitle check)
{baseDir}/scripts/transcribe.sh "https://www.youtube.com/watch?v=VIDEO_ID" --force-whisper
Keep downloaded audio file
{baseDir}/scripts/transcribe.sh "https://www.youtube.com/watch?v=VIDEO_ID" --keep-audio

`⚙️ Configuration`

| Option | Description | Default | |--------|-------------|---------| | --lang | Language hint (ISO 639-1: en, zh, ja, ko, etc.) | auto-detect | | --out | Output transcript file path | /tmp/yt_transcript_.txt | | --force-whisper | Skip subtitle check, always use Whisper API | off | | --keep-audio | Keep the downloaded audio file after transcription | off (deletes audio) | | --audio-bitrate | Audio compression bitrate | 64 |

`📋 Tips & Best Practices`

403 from YouTube: Update yt-dlp (pip install -U yt-dlp)


File too large for Whisper: Lower bitrate with --audio-bitrate 32
Missing API key: Set OPENAI_API_KEY environment variable