@LoudLemur in my understanding, streaming (especially Live) is not so much a question of technology, but of scale and server/bandwidth resources to support dozens, hundreds, thousands of connections. It is necessary to consider use case and scale in order to answer effective performance.
I think you have a pretty good idea of how that should be thought from the basis. So, in this regard, asking oneself for a start, what's the ultimate goal using video streaming or even podcasts or video sharing would be worth spending a bit of time on the question.
As @luckow mentioned about the possibilities and limitations of a VPS using a 1G bandwidth, it is important to keep in mind that for live streaming to large audiences it will eventually take more than 1G of bw output to smoothly scale streaming to such audience, whatever output capacity you have on your server. When you get in the thousands of live viewers even increasing RAM on the server won't be sufficient, it will help but you will need a bigger pipe to push it out. 🙂
OBS Ninja is a good example. Relatively simple to install/host. But how much does it support ? I don't know, but I would guess on most VPS servers or even small dedicated servers, it would be relatively limited.
OBS is used on your local rig and so it depends on your local resources to reach the streaming service server.
I know Peertube has live streaming capacities as well, however I haven't had the time to test it out yet. It would be interesting to learn about anyone else who might have tested this already, and if tested with OBS and well it works, or not lol 😆
Happy for someone to challenge this understanding. Would love to be proved wrong.
Happy to prove you right ✅