New Script: Demucs Stem Splitter for Vegas Pro (AI Audio Separation)

kjetil wrote on 8/17/2025, 11:57 AM

Hi everyone,

I’ve been working on a script for Vegas Pro that integrates Demucs to separate audio tracks into stems (vocals, drums, bass, guitar, piano, etc.) and then automatically imports them as separate audio tracks inside Vegas.

I’m now sharing my current build in case anyone wants to test it, play around with it.

What’s included

  • demucs_cli.exe (required AI engine, ~5.6 GB unpacked – zipped download provided)
  • Vegas Pro .dll script file
  • Configuration .ini file
  • Demo screenshot (JPG)
  • Demo video (MP4)
  • install.txt with simple installation instructions

How to use

  1. Download and unzip the package (link below).
  2. Follow the steps in install.txt to copy the files into your Vegas Pro script folder.
  3. Run the script on an audio event – Demucs will process it and bring the stems back into your Vegas project as new tracks.

Download

👉 Google Drive link to package: https://drive.google.com/drive/folders/1Iw3w6y_2MVOLo5zN6YYIYvdL6W2xq_GX?usp=sharing

(Please note: the AI engine is large – around 5.6 GB when unpacked.)

Demo

Here’s a short preview video showing how it works:

Here is a screenshot of the menu showing options

Important

  • This is an early build and provided as-is.
  • Tested in Vegas Pro 21/22 (should also work in other recent versions).
  • Performance depends on your system (GPU recommended).
  • No warranties – use at your own risk.

Thanks,
Kjetil

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