Which slider adjusts the conclusion of a transition effect?

The End Slider is the tool specifically designed to adjust the conclusion of a transition effect in video editing software. When working with transitions, the End Slider allows you to determine where the transition will finish, thus controlling how the visual blend between two clips concludes.

By manipulating the End Slider, you can extend or shorten the duration of the transition's end point, influencing how abruptly or smoothly the transition comes to an end. This is particularly useful for fine-tuning the timing and aesthetic of your sequences, ensuring that transitions serve their purpose effectively without disrupting the overall flow of the video.

In contrast, sliders like the Start Slider would adjust the beginning of the transition, while the Opacity Slider would modify the visibility levels of a clip or element, affecting how it appears rather than the transition duration itself. The Keyframe Slider relates to specific points in time within a clip or effect, rather than directly influencing transition endpoints. Therefore, the End Slider is the critical tool for managing how a transition effect wraps up.