How to organize an online broadcast from several smartphones?

Question

Nginx

Hello. There is a task.
There will be an event in several cities at the same time. I want to organize a VKontakte broadcast, while I want to switch between these cities as a broadcast director and comment on what is happening.
What I have come to at the moment:
1. I rent a VPS with Ubuntu , put nginx and nginx-rtmp-module
there 2. I put a streamer application on my smartphone that can broadcast to the rtmp server whose address I specify.
3. I install software for broadcasting on the computer - OBS . It can catch streams from the Internet and I take the signal from the rtmp server. And then I send a signal to VK with OBS and direct the broadcast as I want.
With one smartphone, I figured it out, everything worked out.
Now the question is: how to do and what to configure in ngnix.config to do the same with several smartphones, and then pick up several signals in OBS?
Maybe I'm in vain gorging the garden and everything can be done somehow simpler?
The problem is that just yesterday I installed Linux for the first time in my life, opened a terminal, rented vps and other joys of life, so I probably can’t finish something obvious, but I feel that I’m already one step away from successful setup. Please help :)

Answer 1

Not bad for someone who installed Linux yesterday.
Publish different streams (different stream names) from each smartphone. Accordingly, you will have different links that you can accept in OBS.
In general, you have a good and what is important free and open source solution.
Make sure that you have enough channel (to OBS, to guarantee the bitrate of the stream * 2 * number of streams) and the processor (that is, it should not be a completely beggarly VPS) and the Internet from smartphones should be quite stable. Well, be sure to test in advance a day and an hour before the broadcast. Just in case, provide a backup like a pipe.
Good luck.