OBS Scale To Sound

A plugin for OBS Studio that adds a filter which makes a source scale based on the audio levels of any audio source you choose

There are a few properties so you can fine tune how it behaves

OBS forums post
This plugin is not extensively tested, you may come across bugs

Installation

Get the archive for your OS from the releases.

Windows

Make sure the folders get merged. Be careful to not overwrite the existing folders with the ones in the zip file
Extract in the OBS installation folder, default is C:\Program Files\obs-studio

macOS

Extract in /Library/Application Support/obs-studio/plugins

Linux

Extract in ~/.config/obs-studio/plugins

Flatpak

Available in Flathub. You can find it on OBS Studio's page under Add-ons.

AUR

If you're on Arch Linux or an Arch-based distro, you can get the AUR package.
Use the AUR helper of your choice, or install it manually like this

# Pre-built binaries can be installed using the obs-scale-to-sound-bin package
git clone https://aur.archlinux.org/obs-scale-to-sound.git  
cd obs-scale-to-sound  
makepkg -i

Thanks

brodi1 and tytan652 for the AUR Packages
Exeldro for the GitHub Actions workflow
OBS Studio team and contributors for making such a great tool