Software for live video mixing to large screen

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1

I got an event coming up this summer where there might be a need to show live video and audio from 3-4 cameras on a large screen. I was wondering if this could be done on a laptop with suitable software rather that renting pro equipment. Searching brought me to Snowmix, which is in AUR and looks like exactly what I need, but last updated 4 years ago, which makes me think the software is obsolete. Does anyone know of any software suitable for this that is still maintained?

2

search the net for the phrase “linux live broadcasting”
there’s a lot more to find to this problem.

3

Thanks. OBS studio looks promising…

4

OBS seems popular amongst the YouTube content creators who use Linux. I have it on my other installation, but haven’t made any real use of it yet … it does look like a good option, though.

I would have suggested Webcamoid, but they butchered it and made a more decent “paid” version.

5

Do you have video capture hardware and cables to connect 4 video cameras to the laptop?
If not, rent the professional hardware

If video capture is not a problem, OBS Studio can use multiple audio and video sources.
Sources Guide | OBS
There are also youtube tutorials for how to configure multiple video sources and create different scenes

6

I don’t know if the cameras and connections work. Also I don’t know if the laptop is capable of processing. I’ll just have to try. My old windows laptop was able to record from 4 cameras at the same time. I imagine that 4x recording puts higher load on the system than choosing one for showing live on monitor.

Searching for software like this is somewhat complicated, as all results aim for online streaming. They never mention if the software is able to display the resulting video in full screen. I’m looking for offline displaying on projector or big screen. I basically need to have the controls on one monitor and the result show in full screen on connected display. Sure a workaround could be to stream the result, and use another pc to show the stream in full screen… Not a good solution, but it should work.