When you're finished, click Save and make sure you choose the appropriate output format.To increase or decrease the video speed, slide the lever forward or backward.Select the option to Convert Entire Clip.Allow your project to run at its typical speed.Select Advanced Tools from the Preferences menu.Here's how to change video speed in iMovie 9: Note: If you don't want the audio to be sped up too, after clicking the speedometer icon, select the Preserve Pitch checkbox on the upper right. You can also manually enter a speed by selecting Custom from the drop-down menu and specifying the percentage. Select the speed from the drop-down menu and choose one of the presets (2x, 4x, 8x, 20x).

That's where you will make all the basic edits. Then drag your video from the preview area of the media section down to the timeline.Click the Import Media button, choose a video you want to import, and click Import Selected in the lower-right (or Import All if you want to import all videos from the folder).Try free How to speed up a video on iMovie for Mac

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