🎬 AI Video Caption Generator

A simple web app that automatically generates subtitles for videos using AI.

Built with Streamlit, OpenAI Whisper, and MoviePy.

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🚀 Features

• 📤 Upload video files (MP4, MOV, AVI, MKV)
• 🎧 Extract audio from video
• 🧠 Transcribe speech using Whisper (multilingual support)
• 📝 Generate subtitles in SRT format
• 🎬 Burn subtitles directly onto video
• 📥 Download SRT file and final video

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🧠 How It Works

1. Upload a video
2. Audio is extracted using MoviePy
3. Whisper model converts speech → text
4. Transcription is converted into SRT subtitles
5. Subtitles are added to video
6. Download results

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🛠️ Tech Stack

• Python
• Streamlit (UI)
• Whisper (speech-to-text)
• MoviePy (video processing)
• SRT (subtitle formatting)
• Pydub (audio handling)

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📦 Installation

pip install -r requirements.txt

(Better is to create a virtual environment before this command either using venv or conda)

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▶️ Run the App

streamlit run app.py

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📁 Supported Formats

• Video: MP4, MOV, AVI, MKV

• Output:

  • .mp4 (video with subtitles)
  • .srt (subtitle file)

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⚠️ Notes

• Processing time depends on video length and model size
• Whisper runs locally (no API required)
• Large videos may take longer to process

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🔮 Future Improvements

• Better subtitle styling (fonts, colors)
• GPU acceleration for faster processing
• Real-time captioning
• Multi-language subtitle export

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🙌 Acknowledgements

• OpenAI Whisper for speech recognition
• MoviePy for video processing
• Streamlit for UI framework

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📌 Author

Manish Tiwari (predictivemanish) (Built as part of learning AI & real-world applications)