The video will now appear in your presentation. To move the video and adjust it to fit your presentation, click and drag it to the desired space within the slide. You can also minimize and maximize a video to the full size of a slide by clicking the button on the bottom-right of each video.
If you've recently uploaded your video to YouTube, please note that changes to video information can take 8 hours or more to show up in the YouTube search index after they've been uploaded, changed, or removed.