Rich snippets display when search engines return your website in search results. These snippets give potential visitors a small preview of your site's content. For more information, see What Are Rich Snippets?
Go to the Optimize menu and select Create Rich Snippets.
Select Video.
Enter your Video Name.
Enter your Video URL. This is the URL where your video lives. Be sure to include the http:// portion of the URL.
Enter your video Thumbnail Image URL. This is the URL where your thumbnail image lives. Be sure to include the http:// portion of the URL.
Enter a video Description.
Click Generate Snippet Code.
Select the HTML code, and then copy it.
Paste the HTML code into your website where you want the video displayed.
Note: Replace with the URL for your video. Be sure to include the http:// portion of the URL.
Video: My Video
This video rules
Note: After uploading your website, test the code you entered by clicking Google's rich snippets testing tool on the Create Rich Snippets page.
Optional: To email the rich snippet code to your webmaster, go to the Email code section, enter an Email Address and Message, and then click Send.
Note: The rich snippet code must be placed inside the body of your HTML. The HTML element you are adding the rich snippet code to must also be visible on the page.