One or more cameras
A multi-camera shoot also allows the exact same action to be captured from different angles, different framings and different supports (jib, crane, Steadicam). This means that in post-production, the video editor can switch to a different take on the same scene, giving your video a much more professional look. Also, one camera operator can only capture so much in a given amount of time. If time is a bit tight, then multiple cameras will be needed.