What does the Fade In effect do in a video clip?

The Fade In effect creates a gradual transition from black to the clip, enhancing the viewer's experience by allowing the image to appear more smoothly rather than abruptly. This effect is commonly used at the start of video clips to establish a mood or introduce the content gently. By slowly increasing the visibility of the image from a black screen, it sets the tone for the piece and can make the beginning feel more polished and engaging.

The other options involve different types of modifications. Speeding up playback affects the tempo of the video itself, while increasing audio volume pertains specifically to sound dynamics. Adding a sepia tone, on the other hand, is related to color grading and creates a distinct aesthetic look, but does not involve a transition effect like Fade In does.