One OBS instance, all your platforms, and a separate quality setting for each of them. That is the whole promise, delivered straight onto your own hardware.
Aitum multistream is not a relay that rounds every platform down to the same preset. Instead each target you add gets its own settings block, so Twitch can receive the bitrate that fits its guidelines while YouTube takes full advantage of the upload you pay for. You pick the encoder, the audio, the resolution, and each service receives exactly what it deserves.
That is the piece worth reading twice. A single feed might go out at 6000 kbps to one site and 20000 kbps to another, both riding off the same in-flow OBS, both using the hardware encoder in your GPU rather than a third-party server in a city you have never visited.
Most relays send everyone the same weakened copy. Aitum multistream drops that compromise entirely: every platform gets its own slice of your real settings, from your real hardware.
Relays cap bitrate, resolution and destination count. Aitum places no such limit on how many services you send to.
Popular services arrive this pre-filled with the fields they expect, so you are not hunting for a stream key while viewers wait.
Because everything runs in your own room, nothing can break mid-broadcast because a third-party service hiccuped.
One of the cleanest combinations in the range is running aitum vertical beside the multistream. Your main canvas ships a landscape broadcast while a portrait canvas ships the same night vertically to a short-form platform. Awkward as it sounds, the setup is surprisingly simple because both pieces ship from one spot, not through a convoluted chain of converters.
That lets you serve an audience watching on a phone with a proper greeting, right orientation and text that actually fits, rather than a horizontal frame squished into a sliver of a screen. The version of your broadcast that reads like a native phone feed is the version that tends to keep viewers around.
Here is the nice bit most guides skip. You run the aitum vertical plugin to manage the portrait canvas, and the aitum multistream plugin to deliver it. Nothing collides because both were designed by the same team against the same OBS. In the multistream settings you will see a vertical outputs tab right where you need it, already aware of the scenes the vertical plugin knows.
Add a vertical platform there, pick a destination, apply the pre-filled settings, and you are set. The horizontal outputs keep their own separate neighborhood, so changing one never tips its neighbor later.
Encoders, audio tracks, bitrates and resolutions. What shares space: your same OBS, same scenes, and the same steady focus on the audience.
When you ship to three platforms, the little jobs multiply fast. You are changing the starting scene, rotating an ad, sending a welcome message on one platform and posting a banner you forgot on another. This is where the wider aitum tool connects the multistream as a single thing rather than a lonely plugin. A follower on TikTok can trigger a scene change across the whole lot.
Even the simpler shortcuts count. A keypress that flips every output to a "be right back" screen at once, or rotates an audio track, is the difference between looking panicked and looking like you have done this a hundred times. After a month with the tools, you kind of have.
Because this runs off your own connection, the sensible rule is to add outputs one at a time and watch your upload. A stable 8000 kbps beats a sputtering 20000 every single night.
Meet the audience that is already waiting on the platform you skipped and stop apologizing for the one you picked years ago. Add your first destination, give it the right bitrate, and press live. You will wonder why you ever paid someone else to do the job your own card can do for free.