During digital playback, what must be synchronized with brightness info for each pixel of each frame?

In digital playback, it is essential to synchronize color information with the brightness data for each pixel of every frame. This synchronization ensures that the visual output accurately represents the intended image, maintaining the correct hues and shading. Each pixel's brightness level, which determines how light or dark it appears, must correspond with its color information to create a complete and visually cohesive image. When the color and brightness levels are in sync, the viewer perceives an image that is vibrant and true to life.

The other elements mentioned do not directly affect the synchronization of pixel data in terms of individual pixel representation. For example, bit rate relates to the amount of data being transmitted or processed over a given time. Frame rate defines how many frames are displayed per second, impacting the smoothness of motion, but not each pixel's individual attributes. Resolution refers to the number of pixels displayed, which affects overall image clarity and detail but does not cover the necessity of synchronizing brightness with color for each pixel specifically. Thus, synchronization of brightness with color is fundamental to achieving accurate image reproduction in digital video formats.