This is the AK-Cam Developer's Blog. The AK-Cam is a virtual camera( desktop capturing ) software which can be used in the Ustream and Stickam etc.
The AK-Cam will captures multiple regions of your desktop and edit your broadcastings in realtime! Very simple and flexible.
The Ustream's 16:9 aspect ratio and the AK-Cam
Use 4:3 aspect ratio in the AK-Cam with the Ustream's 16:9 settings because the Ustream's 16:9 aspect ratio just resize a video object of the Flash to 16:9 ratio.