Uploaders have control over creating and editing an unlimited number of annotations on their videos. To start annotating, first make sure you have videos uploaded into your account. Log in, then go to view one of your videos. On the Video page, click the blue "Edit Annotations" button to the right of the video.
As you play your video, you can insert commentary by adding speech bubbles, notes and highlight boxes anywhere you want. You can also use the menu on the left to save a draft, delete commentary, edit start/stop times or add links to your annotations. Once you save the final version, click "Publish" to reveal your annotated video to other users. (Note: Video Annotations are shown by default, but the viewer can turn them off while watching a video through the "Menu" button on the bottom right of the video player).
Looking for some creative ways to use annotations? Check out these examples: a shell game, skydiving adventure and magic trick.
For more information on how to use annotations, please visit the Help Center.
We're really looking forward to the endless ways you'll annotate your videos and will add more fun tools and features soon!
Don't forget to share your feedback with us,
The YouTube Team