Videomaker – Learn video production and editing, camera reviews › Forums › Cameras and Camcorders › DSLR’s › Using 2 Canon t3i’s in a studio type Environment-help? › Checkout one of these: Wir
Checkout one of these:
VIDBlaster – http://vidblaster.com/products/home.html
I have loaded up VIDBlaster’s fully functional trial version (they put their logo on the screen until you purchase). This product is pretty good right out of the box I was up and running with a 7D and XF100 as my video feeds in a matter of minutes.
Both products let you do what you want to do.