Quicktime Speed Up Video And Save 2024. First, to increase your movie’s playback speed, simply click the left or right advancement arrows next to the play/pause button. Here are the basic steps:

To slow down a quicktime movie to 50% of its original speed (and save a copy of it), the trick is to add the scaled video to a longer audio file. If you have a long video to watch on quicktime, you may want to speed it up to save time.