As Gary said, if you want it mixed “as it happens”, you’ll need a hardware switcher and simply capture the mixed video while it happens – for post mixing it doesn’t eliminate the need to capture multiple camera’s tapes into Vegas.
What “live switching” in this context means is that you don’t have to stop playback of the timeline in order to switch to a different camera. In Vegas 5, you have to stop playback, change the camera, and then restart playback. In Vegas 6.0b or newer, you can simply change cameras and the playback will give a very brief pause but then continue.
Edward Troxel
