A dedicated portrait canvas that lives inside OBS, so you can broadcast to TikTok, YouTube Shorts and Reels in the same breath you run your normal stream.
Once the aitum vertical plugin is installed, you are not opening a second editing app or fiddling with a window capture. You get a genuine second canvas bolted straight onto OBS Studio, with its own list of vertical scenes and its own list of vertical sources. The first time you flip back to the normal canvas you realize how natural it feels, like the tool was supposed to be there all along.
Just below that sits the vertical scene transitions dock, which lets you store distinct transitions between your portrait scenes without affecting the horizontal ones at all. It is a small nuance, but it saves you from accidentally forcing a fancy stinger onto the wrong aspect ratio.
The plugin lives in separate docks, so your existing OBS profile keeps behaving exactly as it did before. Nothing gets rewritten, nothing gets renamed. The only change is a new bucket of vertical tools sitting ready for you.
The single biggest quality-of-life trick in aitum vertical is something called linked scenes. Right-click any vertical scene, hover over linking, tick the horizontal scene you want, and from that second on they travel together. Move to your gameplay scene on the main canvas and your vertical canvas hops to its own linked version automatically.
That magic extends to people who run their whole show through a Stream Deck. Put your scene buttons on the deck for the horizontal canvas and the portrait feed just follows along, because the plugin listens to the normal OBS scene switch under the hood.
Linking flows one way: changing the vertical scene yourself will not move the horizontal canvas. Keep all your scene changes on the normal canvas so the pair stays perfectly matched.
Head to the download page, pick your system, and let OBS accept the plugin the usual way. Simple.
The Dock menu in View brings the vertical scenes, vertical sources and transitions into view when you need them.
Every install question is answered over on the Aitum support links, with clear guides to keep you from getting stuck mid-setup.
Here is where the setup multiplies without duplicating your effort. Once the vertical stream canvas is good, aitum multistream lets you push both outputs outward together: your normal landscape broadcast to Twitch or YouTube, and a portrait version to TikTok, from the same machine and the same OBS. Separate outputs, separate bitrates, no downscaling compromises.
Some creators skip live-streaming the vertical to a whole second feed and instead run it as a recording canvas for clips. Either way the two tools become natural partners, because they were built by the very same team to think together.
When the vertical feed is paired into an aitum multistream and the second output sits ready in the dock, going live becomes one calm moment rather than a carefully ordered chain of half a dozen small tasks.
The magic of aitum really pays off when you attach the automation app on top. Imagine a Twitch follow that flips your vertical chat scene and fires a thank-you message at the TikTok at the same breath, handled by a simple cause-and-effect pair you set once. You can queue a confetti overlay, bump the clip of your "starting soon" card, or park a welcome message without lifting a hand.
It sounds more elaborate than it is. The building blocks are triggers and actions, and the whole design exists for people who do not want to learn a single line of scripting to make their show feel alive. Add a fade on scene change and the whole thing feels polished enough to ship as a trailer.
The time people spend in a vertical feed is not shrinking. Whether it is TikTok, Shorts on YouTube or an Instagram Live, that audience is real and it is tapping the very same live moment sitting upused. Grab the free install, add one scene, link it, and go live. The rest is just a monitor facing the fun.