Filmora has a one-click solution for applying fast speed motion effect on your videos. But you'll need the latest 2022 version of the software. To get started, add the clip you want to apply slow-mo or fast speed effect. Right-click on the clip and select the Speed and Duration item from the menu. A pop-up window will appear and give you a variety of settings you can change including speed, duration, reverse speed, and ripple delete. Watch the video to learn about this and other ways to speed up your video in Filmora.