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VRT — Voice Record & Translate

Upload an audio file → speaker-separated transcription → translated — all in one desktop app.

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2026-03-20.3.online-video-cutter.com.1.mp4

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Features

• Audio transcription (MP3, M4A, WAV, OGG, FLAC, AAC, WMA, Opus)
• Speaker diarization — auto-detect Speaker 1 / Speaker 2, rename supported
• Automatic chunked processing for files over 150 minutes
• Correction + translation in one step — supports 20 languages
• Export SRT subtitle files (original / translated)
• Session save & resume

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Download

→ Download the latest version from Releases

OS	File
macOS	VRT-macos.zip
Windows	VRT-windows.zip

macOS Installation

1. Unzip VRT-macos.zip
2. Move VRT.app to the Applications folder
3. Double-click to launch — if you see "developer cannot be verified":
   • Open System Settings → Privacy & Security
   • Scroll down to find the blocked VRT message
   • Click "Open Anyway"
   • Confirm by clicking "Open" in the dialog

Windows Installation

1. Unzip VRT-windows.zip
2. Run VRT/VRT.exe
3. If Windows SmartScreen blocks the app:
   • Click "More info"
   • Click "Run anyway"

If you're on Windows 10 version 1803 or earlier, install Edge WebView2 Runtime separately.

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Configuration

Enter your API keys in the settings screen on first launch.

Item	Provider
Soniox API Key	soniox.com
OpenAI API Key	platform.openai.com

Billing note: Both transcription (Soniox) and translation (OpenAI GPT-4.1) use paid APIs. Settings are saved to ~/.vrt/config.json.

Estimated cost — 1 hour of audio (assuming ~130 words/min, ~80% speech ratio):

Service	Estimated Cost
Soniox transcription	~$0.10
OpenAI GPT-4.1 translation	~$0.25
Total	~$0.35

Actual costs vary by speech density, language pair, and current API pricing. Check current pricing: Soniox · OpenAI

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Development

Requirements

• Python 3.10+
• Node.js 20+

Install & Run

# Install dependencies
pip install -e ".[dev]"

# Install frontend dependencies
cd frontend && npm install && cd ..

# Development mode (frontend hot-reload)
# Terminal 1
cd frontend && npm run dev
# Terminal 2
VRT_DEV=1 vrt

# Run tests
pytest tests/ -v

# Build and run production
make run

Build App (PyInstaller)

make build-app-macos    # → build/dist/VRT.app

Windows builds run automatically via GitHub Actions (on tag push).

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Tech Stack

Area	Technology
Backend	Python, Flask, pywebview
Frontend	React, TypeScript, Tailwind CSS v4
Transcription	Soniox (speaker diarization)
Translation	OpenAI GPT-4.1 (Structured Output)
Packaging	PyInstaller, GitHub Actions