Videos take up more space than any other kind of medium within a Google search. In a pixel comparison, video results take up more room than images or authorship photos, and studies indicate that this fact draws user’s eyes straight to them.
Video optimization is also easier than other methods such as Google Authorship because a Google+ account is not required.
Creating a video snippet is done through the creation of a video XML sitemap and the addition of schema.org markup.
The creation of these snippets can even be automated through third party platforms such as Wistia.
One of the most important features of a video’s markup is the video thumbnail. Through the video’s schema.org data, this image can be defined. Try using a thumbnail that will attract user’s attention and encourage clicks.