DSB Streaming Tool

Real-time overlay suite for Splatoon live streams - originally built for the Deutsche Splatoon Bundesliga (DSB).

Overlays run as Browser Sources in OBS and are controlled through a dedicated Control Panel. All data updates in real-time via SignalR.

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Table of Contents

• Quickstart
• Tech Stack & Overlay Routes
• Screenshots
• Contributing
• Credits

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Quickstart

There are start scripts for both Windows and Linux/macOS. They check for required dependencies (Node.js, .NET 9 SDK), start the frontend and backend, and open the Control Panel in your browser automatically.

Platform	Script
Windows	start.bat, start.exe
Linux / macOS	start.sh

Note

The scripts will prompt you to install missing dependencies via WinGet (Windows) or your system package manager (Linux/macOS).

Manual Start

Start frontend and backend manually

Backend

1. Open Backend/DSB.StreamBackend/DSB.StreamBackend.csproj in Visual Studio.
2. Start the project - the server runs on https://localhost:{port} (exact URL shown in the output window).
3. Swagger UI is available at /swagger.

Frontend

cd Frontend/control-panel
npm install
npm start

Angular serves on http://localhost:4200. The Control Panel is at the root URL; overlays are accessible at their respective routes (see Overlay Routes).

Important

The backend must be running for overlays to receive live updates via SignalR.

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Technical Documentation

For in-depth technical documentation, see the docs/ folder.

Tech Stack

Layer	Technology
Frontend	Angular (Control Panel + Overlays)
Backend	ASP.NET Core 9, SignalR, SQLite

Overlay Routes (HTTP)

Route	Description
/overlay/score-box	Score display for both teams during matches
/overlay/map-screen	Map overview
/overlay/commentator-box	Commentator names
/overlay/info-box	General info box
/overlay/start-screen	Start screen with team names and countdown timer
/overlay/end-screen	End screen with Discord and Twitter/X socials

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How to Use

Note

This guide uses OBS Studio. Other broadcasting tools may behave slightly differently.

1. Start the DSB Streaming Tool - see Quickstart. The frontend runs on http://localhost:4200.

2. Open OBS Studio.

3. Add a new Browser Source - in the Sources panel, click the + icon and select Browser.

4. Enter the overlay URL. Each overlay has its own route (see Overlay Routes). For example, to add the score box:

http://localhost:4200/overlay/score-box

5. Set the resolution to match your canvas (typically 1920 × 1080).

6. Click OK - the overlay will appear in your scene and update in real-time as you control it from the Control Panel.

To control scores, maps, commentators, and other overlay data, open the Control Panel in your browser at:

http://localhost:4200/

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Screenshots

Control Panel

Score-Box Overlay

Info-Box Overlay

Map Overview Overlay

Map Overview Overlay (With Counterpicks)

Start Screen

End Screen

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Contributing

Contributions are welcome - whether you are a first-time coder or an experienced developer.

Warning

Please do not use AI-generated code or assets. AI-generated images and other assets will be rejected.

See CONTRIBUTING

Pull Request Process

Every pull request is reviewed by the maintainers defined in the CODEOWNERS file.

Contributor	Role
@Hazeolation	Original Maintainer, Head of Decisions
@iLollek	Original Contributor - ReleaseNoteGenerator, Frontend & Backend
@RubberDuckCollector	Original Contributor - Frontend & Backend
@BucketRaphi	Original Contributor - Frontend

Repository Language Rules

Scope	Language
Code & Documentation	English
Comments	English
UI Texts	German

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How to Support

If you like this Project, please leave a star! ⭐

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Credits

Name	Description
@CrispyNugget99	Created Designs for the UI