Which command allows changing the speed of a storyline clip without affecting later clips?

The command that allows changing the speed of a storyline clip without affecting later clips is "Lift from Storyline." This command effectively removes the selected clip from the primary storyline, leaving a gap in its place, which enables you to manipulate the speed of the clip independently. By lifting the clip out, you create a situation where adjustments made to the speed will not interfere with the timing or arrangement of subsequent clips that are already in the timeline.

In contrast, options such as "Replace Clip," "Disconnect Clip," and "Trim Clip" involve alterations that would modify adjacent clips or require adjustments elsewhere in the timeline. For instance, "Replace Clip" replaces the existing clip and often impacts the sequence, while "Trim Clip" adjusts the duration of the selected clip but can influence the positioning of subsequent clips. "Disconnect Clip" would break the link between audio and video elements often changing how clips interact within the timeline but does not directly manage the speed of the original clip. Therefore, "Lift from Storyline" is the most effective command for changing speed without affecting later clips.