Ask HN: What is the best option for live video stream(cheap)?

Hello guys, I've got an idea to build something that involves streaming webcam to many users.

I have considered the following:

- Twilio Programmable Video (exactly what i need but it's not that cheap)

- WebRTC(peer2peer) - works, but requires for broadcaster to have good upload speed

- WebRTC(server is peer) - not that easy to implement

- nginx rtmp with a webrtc gateway - huh...

- red5 server

- encoding the cam data on the client and streaming buffer to the server directly

Do you guys have maybe some ideas how would you do this kind of thing. But do it as cheaply as possible.

Thanks :)