It's a live video mixer that you can use to switch between various sources of input - say, a demo device (or, in my case, a device under test), a front camera (or two) facing the presenter, a top camera showing how the presenter interacts with the device... supports a bunch of transitions, and if you get yourself the ISO variant, it records all audio and video tracks uncompressed together with a bunch of metadata that allows you to import the exact same cut as it was broadcast, and fine-tune aspects of it in post to get a refined video.