An AI-powered application that analyzes successful UGC (User-Generated Content) advertisement videos and generates new promotional videos for your products based on the same style and techniques.

viral2viral allows marketers to upload a reference UGC advertisement video, extracts key insights using AI (visual style, messaging tone, pacing, engagement techniques), and then generates a brand-new advertisement video for their product while maintaining the successful elements of the original.

Watch Demo on YouTube

Built with GitHub Spec Kit

• Video Upload & Analysis: Upload UGC advertisement videos (MP4, MOV, AVI up to 100MB) and get AI-powered analysis of visual style, messaging, pacing, and engagement techniques
• Product Customization: Input your product details (name, description, image) to personalize the generated advertisement
• AI Prompt Generation: Automatically generate and moderate text-to-video prompts combining insights from the original video with your product information
• Video Generation: Create new advertisement videos using advanced AI video generation services (Sora, Laozhang)
• Side-by-Side Comparison: View original and generated videos together to compare results
• Cloud Storage: All videos and assets are stored securely in AWS S3

• Framework: NestJS (Node.js/TypeScript)
• Video Analysis: Google Gemini 2.5 Flash API
• Text Generation: OpenAI GPT-5 (via Laozhang API)
• Video Generation: OpenAI Sora 2 (via Laozhang API)
• Storage: AWS S3 with presigned URLs
• Architecture: Modular structure with separate services for analysis, generation, prompts, products, storage, and sessions

• Framework: React 18 with TypeScript
• Build Tool: Vite
• Styling: TailwindCSS
• State Management: Custom hooks (useWorkflow)
• API Client: Axios

• Session-based workflow management (no authentication required for MVP)
• RESTful API with modular controllers
• File upload handling with Multer
• Environment-based configuration

viral2viral/
├── backend/              # NestJS API server
│   └── src/
│       ├── modules/      # Feature modules
│       │   ├── analysis/ # Video analysis with Gemini
│       │   ├── generation/ # Video generation orchestration
│       │   ├── prompt/   # Prompt generation & moderation
│       │   ├── product/  # Product information management
│       │   ├── sessions/ # Session state management
│       │   ├── storage/  # AWS S3 integration
│       │   └── video/    # Video upload handling
│       ├── common/       # Shared utilities & types
│       └── config/       # Configuration management
├── frontend/             # React SPA
│   └── src/
│       ├── components/   # UI components
│       ├── hooks/        # Custom React hooks
│       ├── services/     # API client
│       └── types/        # TypeScript definitions
├── scripts/              # Testing & utility scripts
│   └── output/          # Example generated videos
└── specs/               # Spec-First development docs
    └── 001-ugc-video-generator/

See example generated videos in scripts/output/:

• generated-26.11.25.mp4 - Generated advertisement video

• Node.js 18+
• AWS account with S3 bucket configured
• API keys for:
  • Google Gemini API
  • OpenAI API
  • Laozhang API (optional)

1. Clone the repository:

git clone https://github.com/IuriiD/viral2viral.git
cd viral2viral

2. Install dependencies:

# Install root dependencies
npm install

# Install backend dependencies
cd backend
npm install

# Install frontend dependencies
cd ../frontend
npm install

3. Configure environment variables:

# Backend: create backend/.env
cp backend/.env.example backend/.env
# Add your API keys and AWS credentials

# Frontend: create frontend/.env
cp frontend/.env.example frontend/.env
# Configure API endpoint

4. Start the development servers:

# Terminal 1: Start backend (port 3000)
cd backend
npm run start:dev

# Terminal 2: Start frontend (port 5173)
cd frontend
npm run dev

5. Open http://localhost:5173 in your browser

1. Upload Reference Video: Upload a successful UGC advertisement video
2. Analyze: AI extracts key elements (style, tone, pacing, techniques)
3. Edit Analysis: Review and modify the analysis if needed
4. Add Product Info: Enter your product name, description, and upload product image
5. Generate Prompt: AI creates a text-to-video prompt combining insights + product
6. Moderate & Approve: Review and edit the prompt
7. Generate Video: Create your new advertisement video
8. Compare: View original and generated videos side-by-side
9. Download: Save your generated video

See specs/001-ugc-video-generator/contracts/openapi.yaml for full API specification.

• Backend Tests: cd backend && npm test
• Frontend Tests: cd frontend && npm test
• Linting: npm run lint in respective directories
• Formatting: npm run format in respective directories

UNLICENSED - Private project

This project follows spec-first development practices. See specs/001-ugc-video-generator/ for detailed specifications and development plans.