What does "exposure of the video" mean?

What does "exposure of the video" mean?

Tim Smith (Camcorder Training Specialist) gives expert video advice on: How do I record on my camcorder?; What is the "iris" of a camcorder?; How do I adjust my camcorder's white balance? and more...

A lot of terms get thrown out there like exposure or shutter speed. Really that's all about exposure. Exposure is how much light is getting to the image center. Is it coming through an aperture? Is it on a shutter speed? It's really just about how much light reaches the chip and what happens to that light before it gets there. Exposure is not that hard to understand. If it's a hot exposure, it's bright. If it's a dark exposure, it's dark. You just have to make allowances for the correct exposure.