Ustream Producer 2.0.2

Ustream Producer is an easy and powerful way to stream to your Ustream channel. For beginning users, you can get started right away using your built in webcam and add graphics, videos and music to your broadcast. For more experienced users, the Pro and Studio versions offer many advanced features for pro quality productions, right from your desktop.

System Requirements
Mac
Mac OS X 10.5 or later, including Lion
Intel Based Mac
Minimum 512MB RAM
QuickTime 7 or higher
200 MB HD (For install)
HD space for recording to disk
A Quartz Extreme capable graphics card
Minimum Intel Core Duo or better for HDV decoding
QTSS/DSS 4.1.3 or later is needed for automatic "announce" unicasting
A supported GPU is required for Core Image and GPU video compression acceleration
Sufficient upload speed (500kbps for low quality, 800kbps for good, 1.6 Mb and up for HD).

Home Page: http://www.ustream.tv/producer#FeatureTable