Loudnorm PRO

🎬 Loudnorm PRO – Audio Normalization Tool (FFmpeg GUI)

Loudnorm PRO is a cross-platform GUI tool for batch audio normalization of video files using FFmpeg.

Supports modern hardware acceleration:

• NVIDIA (NVENC)
• AMD (AMF on Windows, VAAPI on Linux)
• CPU (x265)

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🚀 Features

• 🎧 EBU R128 loudness normalization (2-pass loudnorm)

• 🎬 Batch processing (multiple files or folders)

• ⚡ Hardware encoding support:

  • HEVC NVENC (NVIDIA)
  • HEVC AMF (AMD Windows)
  • HEVC VAAPI (Linux AMD)
  • HEVC x265 (CPU fallback)

• 📊 Audio track preview (language detection)

• 🔁 Resume interrupted jobs

• 🧠 Smart overwrite system (safe temp handling)

• 🎨 Dark / Light UI

• 🌍 Multi-language (DE / EN)

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📦 Downloads

Windows

• Installer: Loudnorm_PRO_Setup_v1.0.3.exe
• Portable: Loudnorm_PRO_v1.0.3_portable.zip

Linux

• Archive: Loudnorm_PRO_linux_x86_64.tar.gz

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🖥️ Requirements

General

• FFmpeg (required)
• FFprobe (required)

Windows

• FFmpeg included OR installed in:

  • C:\ffmpeg\bin
  • PATH

Linux

• Install dependencies:

sudo apt install ffmpeg

or

sudo pacman -S ffmpeg

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▶️ Usage

Windows

Run:

Loudnorm PRO.exe

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Linux

Extract:

tar -xzf Loudnorm_PRO_linux_x86_64.tar.gz
cd Loudnorm_PRO
chmod +x Loudnorm_PRO
./Loudnorm_PRO

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⚙️ Configuration

Settings file location:

Windows

%LOCALAPPDATA%\Loudnorm PRO\loudnorm_settings.json

Linux

~/.local/share/Loudnorm PRO/loudnorm_settings.json

Example:

{
  "temp_work_dir": "/mnt/fastssd/loudnorm_temp"
}

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⚠️ Notes

• Overwrite replaces original file only after successful processing
• Temporary files are used to prevent data loss
• Hardware encoding availability depends on your system and drivers

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🧪 Tested Systems

Windows

• NVIDIA RTX 5090 → NVENC ✔
• AMD RX 9070 XT → AMF ✔

Linux

• AMD RX 9070 XT → VAAPI ✔

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🛠️ Known Limitations

• VAAPI options depend on driver support
• AMF encoder is sensitive to parameter combinations
• FFmpeg must be properly installed and accessible

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❤️ Credits

• FFmpeg (https://ffmpeg.org/)
• tkinter / tkinterdnd2

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📄 License

GNU GPL v3

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© Loudnorm PRO