So the three screens are vertically striped in Portrait mode, then merged together?
OBS does not have any native functionality to treat multiple monitors as one larger contiguous monitor, no, since it is not meant for use as a local presentation software suite or video-wall driver.
It's a livestreaming tool first and foremost, even if people have started using it for a LOT of unintended and totally unrelated tasks.
That said, I can think of one or two ways to make it DO it, but at-best they would be a janky hack, and likely would lose a lot of resolution in one of the methods.
thank you, I feel better the fact that you understood me, I have looked for several solutions, and sincerely your idea is right but not practical, I have explored several possibilities but all are impractical, so I have two solutions left, either change graphics card and go to the invidia RX series or go to arena type software or other to successfully send it.
It is true that when I discovered OBS during the confinement of the last year, I said to myself that it is very beautiful to be true, despite an interface not at all attractive, now more and more providers in events use it
Most straightforward would be to create four scenes. Your 'control' scene would include all images/assets/etc. On each of the other three scenes, you'd add the first scene as a Source, apply a rotation transform, and set up the transform so each of them only showed a different third of the first scene. Then just Fullscreen Projector each of the three secondary scenes to each of the three outputs, as appropriate. You'd have quite a bit of resolution loss due to the scaling+rescaling being done multiple times, and working with a smaller source scene.
Again, janky hack, but could potentially work.
Just like you can drive in screws with a hammer... but finding a tool intended for the job is really a much better idea.
