A per-app volume mixer plugin for StreamController. Control the volume of individual applications directly from your Stream Deck — with priority sorting, custom icons, page navigation, and live volume display.
Optimized for the Stream Deck MK.2 (3×5). Individual actions work on any model.
- Per-app volume control — Volume Up / Down buttons per active audio app
- Live display — App icon, name, and current volume on the middle button
- Priority list — Define which apps appear first; reorder, hide unwanted apps
- Custom icons — Override auto-detected icons for any app (e.g. Spotify)
- Page navigation — Scroll through more than 4 active apps
- Auto-hide nav — Navigation hides itself when there's only one page
- Configurable labels — Choose what's shown on top/center/bottom of every button
- Settings sync — Change one Volume Up button, sync to all columns automatically
- Export / Import — Back up and restore your full configuration as a ZIP
- Open StreamController and go to Settings → Store
- Enable Custom Repositories and add this URL:
https://github.com/Dav1d-Fn/StreamController-BetterVolumeMixer - Search for Better Volume Mixer in the Store and install it
- Restart StreamController
The plugin ships with a pre-built Better Volume Mixer page. Place the Open Mixer action anywhere on your main page — pressing it switches to the mixer.
[ Back ] [ Vol ▲ ] [ Vol ▲ ] [ Vol ▲ ] [ Vol ▲ ]
[ Next → ] [ App ] [ App ] [ App ] [ App ]
[ ← Prev ] [ Vol ▼ ] [ Vol ▼ ] [ Vol ▼ ] [ Vol ▼ ]
Navigation Slot 0 Slot 1 Slot 2 Slot 3
| Action | Description |
|---|---|
| Open Mixer | Opens the mixer page. Place on your main page. |
| Nav: Back | Returns to your main page. |
| Nav: Next → | Shows the next 4 apps. |
| Nav: ← Prev | Shows the previous 4 apps. |
| Volume Up | Increases volume for the app in this column. |
| Volume Down | Decreases volume for the app in this column. |
| App Display | Shows app icon, name, volume. Click to mute/unmute. |
| Setting | Description |
|---|---|
| Column Slot (0–3) | Which app column this button controls |
| Volume Step (%) | How much to change volume per press (default 5%) |
| Top / Center / Bottom | Volume %, App Name, or Custom Text |
| Custom Icon | PNG, SVG, or GIF for the button |
| Sync settings | Apply to all Volume Up (or Down) buttons at once |
| Setting | Description |
|---|---|
| Column Slot (0–3) | Which app column this shows |
| Show App Icon | Toggle automatic icon |
| Top / Center / Bottom | App Name, Volume %, or Custom Text |
| Sync settings | Apply to all App Display buttons |
| App Priority List | Order apps appear in columns; 🖼 sets a custom icon |
| Hidden Apps | Apps that are never shown in the mixer |
| Setting | Description |
|---|---|
| Custom Icon | PNG, SVG, or GIF |
| Top / Center / Bottom | Page Number or Custom Text |
| Hide if only one page | Hides the button when there's nothing to navigate |
Open the settings of the Open Mixer button and scroll to the bottom:
- Export Settings… — saves priority list, hidden apps, custom icons, and all pages to a ZIP
- Import Settings… — restores a previously exported ZIP (requires StreamController restart)
Better Volume Mixer detects app icons automatically via GTK's icon theme. For apps where this doesn't work (e.g. Spotify via Flatpak):
- Open any App Display button settings
- In App Priority List, click 🖼 next to the app name
- Browse to a PNG or SVG and click Set Icon