UStream.tv,在线音视频广播平台，www.ustream.tv视频成立于2007年；基本上电脑用户只要有摄像头和安装最新版的flash播放器就能建立个人的电视台
与youtube不同现在此网站已经有多达两百万注册用户在2008年美国总统竞选期间
As the worlds fastest-growing and largest live streaming platform with over 50 million unique monthly viewers and a network of produced and user-generated content, Ustream is fundamentally reshaping online media. Our mission is to bring the world together by immersing viewers in live broadcasts that create riveting experiences, interactive communities, and lasting connections. The innovative products and powerful technologies we create will change the world.在线个人视频转播工具。
