Which tool allows users to change the speed of a video section?

The tool that allows users to change the speed of a video section is the Rate Stretch tool. This tool is designed specifically for manipulating the speed of a clip directly in the timeline. By dragging the edge of a video clip while using this tool, users can speed up or slow down the playback of that segment without altering the length of the surrounding clips.

In practice, if a user needs a clip to play faster, they can pull the endpoint closer, effectively reducing the duration and increasing the speed. Conversely, dragging the endpoint out will slow the clip down and increase its duration. This functionality is particularly useful for creating effects such as fast motion or slow motion within a video project.

Other tools like the Slide tool, Rolling Edit tool, or Selection tool serve different purposes, such as adjusting the timing of adjacent clips or selecting segments but do not specifically focus on altering playback speed.