Voicext - Local AI Transcription Tool

Voicext is a high-performance desktop application built with Electron and React that provides local, private, and fast speech-to-text transcription. It leverages the power of GPU-accelerated AI to convert audio files into professional subtitle formats.

📸 Screenshots

_{Main Dashboard}	_{New Transcription}
_{Processing & Results}	_{Built-in SRT Editor}
_{AI Model Management}	_{Professional Output}

A modern, glassmorphic UI designed for speed and clarity.

🚀 Key Features

Local Processing: Your data never leaves your machine. Privacy by design.
GPU Acceleration: Utilizes DirectCompute and CUDA for lightning-fast transcription using the Windows-optimized Whisper implementation.
Built-in SRT Editor: Edit your transcriptions instantly within the app with a real-time preview.
Smart SRT Fixing: Custom algorithm to ensure SRT files are 100% compatible with Adobe Premiere Pro and other NLEs.
Model Management: Download and switch between different AI models (Tiny, Base, Small, Medium, Large) directly from the interface.
Modern UI: A sleek, responsive interface built with React, Tailwind CSS, and Framer Motion.
Turkish Optimization: Specialized handling for Turkish character encoding and language models.

🧠 How It Works

The transcription process follows a robust pipeline to ensure accuracy and compatibility:

Hardware Detection: The app automatically detects if an NVIDIA GPU is available to enable hardware acceleration.
Engine Initialization: It spawns a background process using the whisper.exe CLI, passing the audio file and selected model.
Stream Processing: Real-time feedback is captured from the engine's stdout, providing the user with live progress updates.
Post-Processing (SRT Fixer):
- Timestamp Normalization: Corrects overlapping or negative duration segments.
- Segment Merging: Automatically merges micro-segments that often occur in long-form audio.
- Encoding Correction: Ensures the output is UTF-8 encoded, specifically handling Turkish characters to prevent encoding errors.
- NLE Compatibility: Formats the SRT specifically for high-end video editors like Adobe Premiere Pro.

🛠️ Technology Stack

Core: Electron
Frontend: React with Vite
Styling: Tailwind CSS & Framer Motion
Engine: Const-me/Whisper (Windows-optimized C++ implementation)
State Management: Zustand

⚙️ Setup & Installation

Prerequisites

Node.js (v18 or higher)
NVIDIA GPU (Recommended for speed, but supports CPU)

Installation Steps

Clone & Install:

git clone https://github.com/truncgil/voicext.git
cd voicext
npm install

Setup Binaries: The application requires the Whisper executable and AI models. Run the automated setup script:
```
node scripts/setup-binaries.js
```
Run Application:
```
npm run dev
```

📄 License

This project is licensed under the MIT License.

Developed with ❤️ by Truncgil Software.

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