OBS Multistream Setup 2025 | Horizontal + Vertical Streaming & Chat Overlay

Set up OBS Multistream in 2025 the right way! 🚀 In this step-by-step guide, I’ll show you how to stream horizontally and vertically at the same time, connect your stream key, add sources, customize layouts, and use tools like StreamElements Live and Social Stream Ninja for a multi-platform chat overlay. Perfect for creators who want to go live on YouTube, Twitch, Kick, Facebook, and TikTok all at once.


OBS:
https://obsproject.com/

Stream Ninja:
https://socialstream.ninja/

SE Live Plugin:
https://streamelements.com/selive


YouTube Chapter

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00:00 Intro: OBS Multistream Guide
00:43 Install OBS Studio
01:56 First Time Opening OBS
03:20 What is a Stream Key?
04:22 Auto-Configuration Setup
04:51 Canva for Stream Assets
04:57 OBS Settings Overview
05:42 Starting Your Stream Setup
06:37 Adding Sources
06:49 Setting Up Webcam
07:20 Positioning Sources
07:39 Adding Audio
07:49 Microphone Setup
08:14 Multistream Setup (Other Platforms)
08:30 Download StreamElements Live
08:53 Setup StreamElements Live
09:48 Using the Activity Feed
09:58 Multi-Streaming Tool
10:30 Add Vertical Stream Layout
10:57 Customize OBS Docks
11:08 Selecting Platforms
11:23 Share Camera Vertically
11:48 Create Vertical Scenes
12:49 Multi-Stream Chat Overlay
13:23 Install Social Stream Ninja
14:12 Start Social Stream Ninja
15:29 Add Chat Overlay
16:34 Adjust Dock Sizes
16:51 View Chat in OBS
17:24 Creating Scenes
18:42 Gaming Scene Setup
19:04 Browser Scene Setup
19:11 Adjust Gaming Source
19:43 Fix Hidden Audio Bar
20:02 Adjust Vertical Game Scene
21:29 Link Vertical & Horizontal Scenes
22:05 Another Browser Scene
24:04 Starting a Stream
24:40 Stream Key Setup
25:55 Going Live! 🎬

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