What do you need to implement online video chat?

Question

PHP

I would like to know what I need to implement an online video chat, what technologies will I need to use? In what languages ​​will I have to write a video chat and connect it to the site. What load will the site give to the server? Which way is better to go?
PS Guys, don't say that there are many such sites, I have my own plans.

Answer 1

You can dig into open source solutions like PeerChat

Answer 2

You will need: Js/html5 video/sockets
Article times
Using js:
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If registration etc. - backend on whatever you want php / python
Flash is already quite far behind the times. But if you want - an article on this topic