What effect can be created using the ultra key feature?

The ultra key feature is primarily used to create a green screen effect, which allows you to remove a specific color (commonly green or blue) from a video clip. This technique is essential in video production for compositing, where you want to replace the background of a subject that is filmed in front of a solid color backdrop, such as a green screen. By using the ultra key, you can select the color you want to remove (often the green from the screen) and make that background transparent, enabling the addition of a different background image or video.

This feature is particularly useful in various contexts, including film production, news broadcasting, and video games, where the aim is to integrate live or recorded footage with digital elements seamlessly. The other effects mentioned—black and white, slow motion, and split screen—do not utilize the ultra key functionality and are adjusted through other editing techniques and effects in video editing software.