What is the primary function of a switcher in video production?

The primary function of a switcher in video production is to select between different video sources. A switcher, also known as a vision mixer, allows operators to seamlessly transition between various video feeds, such as cameras, pre-recorded videos, graphics, and other visual elements during a live production or a video shoot. This capability is essential for broadcast or live events, as it enables real-time switching and mixing of various input sources, helping to create a polished final product.

While recording audio tracks, editing video clips, and creating visual effects are all important aspects of video production, they do not fall under the primary function of a switcher. Switchers are specifically designed for handling video inputs and managing transitions between them, which is critical for maintaining the flow and coherence of a production.