Скачать или смотреть UE5 Pixel Streaming Tutorial | Send JSON from Frontend to Unreal on Launch

In this tutorial, you’ll learn how to send custom messages from your frontend to Unreal Engine 5 automatically when your application starts, using StreamPixel’s Pixel Streaming platform.

This method helps developers trigger Unreal Engine logic right at startup — whether it’s loading a specific scene, setting parameters, or initializing gameplay — without building a custom frontend.
By simply appending parameters in the URL, StreamPixel allows you to pass data directly to Unreal Engine over WebRTC, making integration much faster and easier.

You’ll learn how to:

Set up the Pixel Streaming Input Component in Unreal Engine

Handle and read JSON messages inside Blueprints

Use the URL Generator tool or manually encode URL parameters

Automatically trigger Unreal Engine events on application launch

This approach is ideal for interactive web projects, digital twins, configurators, and browser-based Unreal experiences where you need Unreal to react dynamically as soon as the stream loads.

If you want to send messages later in runtime (for example, on a button click or interaction), check out our next tutorial on sending messages from a custom frontend to Unreal Engine.

Why It’s Useful

No need to create or host a separate frontend

Makes your Unreal Engine app dynamic from the very first frame


Fully compatible with UE5 Pixel Streaming and Streampixel’s orchestration tools

🌐 Try it yourself:
👉 Visit www.streampixel.io to learn more
🚀 Start your Free Trial at www.dashboard.streampixel.io

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URL GENERATOR TOOL
https://urlgenerator.streampixel.io/

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CHAPTERS
00:00 Introduction
00:12 The Problem
00:45 Unreal Setup
04:42 Outro

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Video Code
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Keywords
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