🎙️ Offline AI Multilingual Subtitle Generator

📺 Full step-by-step explanation is in the video:
https://youtu.be/VIDEO_ID
(Watch this first if you want a guided walkthrough of the code and setup.)

Turn any audio/video file into:

• ✅ An English transcript (.txt)
• ✅ English subtitles (.srt)
• ✅ Subtitles in multiple languages (.srt per language)

All offline, free, and no API keys.

Powered by:

• OpenAI Whisper for speech-to-text
• Argos Translate for offline translation
• Streamlit for the web UI

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✨ Features

• 🧠 Speech → English text using Whisper
• 🌍 Multi-language subtitles via Argos Translate (e.g. French, Spanish, Hindi…)
• 🎬 Standard .srt format with proper timestamps
• 🔒 100% offline after first model downloads
• 🖥️ Simple browser UI (Streamlit) – just upload & click

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🏗️ Architecture Overview

High-level pipeline:

1. Upload audio/video file (mp3, wav, m4a, mp4, etc.)
2. Whisper:
   • Detects language
   • Transcribes + translates to English
   • Returns timestamped segments (start, end, text)
3. Subtitle builder:
   • Builds English .srt from Whisper segments
4. Argos Translate:
   • Translates each subtitle line English → target language
   • Builds .srt for each selected language (same timestamps)
5. Streamlit UI:
   • Shows English transcript preview
   • Exposes Download buttons for all generated files

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📂 Project Structure

.
├─ app.py             # Streamlit UI (file upload, settings, downloads)
├─ transcriber.py     # Core logic: Whisper, Argos, SRT generation
├─ requirements.txt   # Python dependencies
└─ README.md