SublyAI - AI Video Translator & Subtitle Generator

Backend Setup

Prerequisites

• .NET 8 SDK
• FFmpeg (must be installed and available in PATH)
• OpenAI API Key

Installation

1. Install FFmpeg

   • Windows: Download from https://ffmpeg.org/download.html and add to PATH
   • Or use: winget install ffmpeg
   • Verify installation: ffmpeg -version

2. Configure OpenAI API Key

   • Open SublyAI/appsettings.json
   • Add your OpenAI API key:

   "OpenAI": {
     "ApiKey": "your-api-key-here",
     "Model": "gpt-4"
   }

3. Restore NuGet Packages

   dotnet restore

4. Run the Application

   dotnet run --project SublyAI

5. Access Swagger UI

   • Navigate to: http://localhost:5000 or https://localhost:5001
   • Swagger UI will be available at the root URL

API Endpoints

• POST /api/videos/upload - Upload a video file
• POST /api/videos/{videoId}/transcribe - Transcribe video audio
• POST /api/videos/{videoId}/translate - Translate transcription
• POST /api/videos/{videoId}/subtitles - Generate SRT subtitle file
• GET /api/videos/{videoId}/subtitles/download - Download subtitle file

Storage

Videos and generated files are stored locally in the Storage directory (configurable in appsettings.json).

Logging

Logs are written to:

• Console
• File: logs/sublyai-YYYYMMDD.txt

CORS

CORS is configured to allow requests from http://localhost:4200 (Angular default). Update appsettings.json to add more origins.