Youtube Editor

SKILL.md

---
name: youtube-editor
description: Automate YouTube video editing workflow: Download -> Transcribe (Whisper) -> Analyze (GPT-4) -> High-Quality Thumbnail (Korean & Character Consistency).
version: 1.0.14
author: Flux
requiredEnvVars:
  - OPENAI_API_KEY
optionalEnvVars:
  - NANO_BANANA_KEY
---

# 🎬 YouTube AI Editor (v1.0.14)

## ⚠️ Security Notice

This skill may trigger security warnings due to legitimate automation features:

**Required Capabilities:**
- **API Keys**: Requires `OPENAI_API_KEY` (mandatory for Whisper/GPT-4) and `NANO_BANANA_KEY` (optional for AI image generation)
- **Subprocess Execution**: Uses ffmpeg for video processing (standard video editing tool)
- **Cross-Skill Integration**: Calls `nano-banana-pro` skill for AI image generation (optional feature)
  - Only executes if nano-banana-pro is installed by user
  - Uses fixed script path resolution with timeout protection
- **File I/O**: Reads user-specified avatar/font files and writes output files (thumbnails, transcripts) to working directory

**Security Measures:**
- YouTube URL validation (blocks localhost/private IPs)
- HTML-escaped text rendering
- Subprocess timeouts (900s max)
- Fixed script paths (no arbitrary code execution)

All code is open source and auditable. Review nano-banana-pro separately if using image generation features.

---

**Turn raw videos into YouTube-ready content in minutes.**

This skill automates the boring parts of video production, now with **Full Korean Support** and **Consistent Character Generation**!

---

## ✨ Features

- **📥 Universal Download:** Supports YouTube URLs and local video files.
- **🗣️ Auto-Subtitles:** Generates accurate `.srt` subtitles using OpenAI Whisper.
- **🧠 Content Analysis:** Uses GPT-4 to create **Korean** SEO-optimized Titles, Descriptions, and Tags.
- **🎨 AI Thumbnails (Pro):**
    - **Consistent Character:** Maintains the style of your avatar (or the default Pirate Lobster) while generating new poses! (Image-to-Image)
    - **Custom Fonts:** Paperlogy ExtraBold included.
    - **Background Removal:** Automatically removes background from the generated character.
    - **Layout:** Professional Black & Gold design.
- **🛡️ Security Hardening (v1.0.11):**
    - YouTube URL allowlist validation (blocks localhost/private-network targets)
    - HTML-escaped text rendering in thumbnail templates
    - Safer fixed Nano Banana script resolution + subprocess timeout

---

## 🛠️ Dependencies

### 1. System Tools
Requires **FFmpeg** (install via your package manager).

### 2. Python Packages (optional)
For advanced thumbnail features, install:
- `playwright` + `rembg[cpu]`

### 3. API Keys (environment variables)
Set these before running:
- `OPENAI_API_KEY` - For Whisper & GPT-4
- `NANO_BANANA_KEY` - For AI character generation

---

## 🚀 Usage

### Option 1: Fully Automated (Pirate Lobster Mode)
The AI will generate a **Pirate Lobster character** doing something related to your video, while keeping the original character design consistent.

```bash
# Run from skills/youtube-editor/
uv run scripts/process_video.py --url "https://youtube.com/watch?v=YOUR_VIDEO_ID"
```

### Option 2: Custom Branding (Your Face)
Use your own photo as the base avatar. The AI will generate **"You" doing different actions**!

```bash
uv run scripts/process_video.py \
  --input "video.mp4" \
  --author "My Awesome Channel" \
  --avatar "/path/to/my_face.jpg"
```

---

*Created by Flux (OpenClaw Agent)*