Freeze frames. If you're marrying the audio in the video, maybe because you've recorded them separately, and you see your video going faster than the audio, you can add a freeze frame. To do this, just put the scrubber at the specific place you want your freeze frame to be right click and add freeze frame. You can lengthen it to occupy occupy the desired time. And if you play the video, you'll notice it looks like you've stopped your actions for a while.