Live streaming Flash video

what software do I need, if I want to make a video live stream, than could be watched in a flash player?

Preferably Linux tools. I'd like to peercast it to a hub, and multicast it 开发者_开发百科from there, much like webradio works.

Try Flash Media Server and one of their recommended stream partners. Here's a guide to streaming with Flash Media Server.

Alternatively we use a streaming appliance called the Digital Rapids StreamZHD Media Encoder. It's a fantastic piece of hardware but it cost around $35,000 USD