So, you've embedded a video in Google Slides, but it's just too darn long for your presentation. You can edit the video by following these steps.
1. Open your Chrome browser and get to the slide deck where you've embedded the video.
2. Find the slide that has the embedded video.
3. Right-click the video.
4. Select 'Format options'.
5. Here, you can choose where to start or end the video, resize the video, or add a drop shadow around the video!