What does contrast measure in a video frame?

Contrast in a video frame refers to the difference between the brightest and darkest areas within the image. It is a critical aspect of visual quality because it affects how textures, shapes, and details are perceived. High contrast can enhance the visual interest and depth of an image, making distinctions between light and shadow more pronounced. This differentiation is essential for creating mood, emphasizing subjects, and guiding the viewer's attention within the frame.

The other options do not relate to the measurement of contrast. Color saturation pertains to the intensity of color in an image, audio clarity concerns the quality of sound within the production, and resolution refers to the number of pixels in the video frame which affects image sharpness but is not directly related to contrast. Thus, the distinction made by contrast is specifically about evaluating light intensity differences rather than the quality of sound or color saturation.