Let's show you how to trim your screen recordings on Chromebook. When you are finished recording your screen, click on the 'Done button. This will bring up the editing window where you can trim your video. At the bottom of your screen you will see two sliders. One at the start of your video and the other at the end. To trim your video click and drag the sliders Your recording will only publish what is between both sliders. You are now ready to save and publish your video.