How to pause the video halfway?

Insert two keyframes in succession where you want to pause, and drag the second keyframe back with all subsequent frames.

Generally speaking, just cut off the middle part and then delete it. It's simple. The specific operation is to locate the beginning of the part to be deleted in the video preview box after importing the video panel, and then split it with one key (ctrl+q or ctrl+k) with super scissors, and then locate the end of the part to be deleted with one key.