title: How to build a server to broadcast real time video?
body: <p>I need to build a system to broadcast videos, just like Youtube. But the video is real-time video, which means the video are captured, converted and broadcast immediately. Is there any open source software can do this?</p>
  
  <p>I really need some practical guides including the requirements (hardware and software).</p>
  
  <p>Thanks in advance~</p>