Playback: Trim Video Say you wanted to begin the video when the camera is steady. You can edit the Playback with the Trim function. Trim doesn't delete any of the video. It simply sets the start and stop times.   3. Try it: Trim the Video The Video on Slide 4 is still selected. Go to Video Tools ->Playback->Editing. Click on Trim Video.   You will be prompted to enter the Start Time and the End Time. You can use the playback buttons to set the time very precisely if you wish.   Click OK and keep going, please. Exam 77-422: Microsoft PowerPoint 2013 3.0 Create Slide Content 3.6 Insert and Format Media: Edit the Playback (Set Start/Stop Times) Video Tools ->Playback->Editing->Trim Video