Explainer videos have become quite popular these days. The trend has taken such a toll in the last few years that the absence of such a video may directly affect your search engine ranking.
1. Enhances conversion on your website. Many online retailers stated that they have significant increase in sales by adding explainer video to their landing page.
2. Fulfill several purposes on a landing page, it cover marketing and explaining purposes. Great explainer video will be shared virally; studies show that people love to share video. An interesting video is always shared on social network such as Facebook, Twitter, and Google+.
3. Double your visitors browsing time; people love to watch video, the more videos you have on your website, the more time they will spend digging your website.
4. Improve search engine optimization. Websites with videos get better position on SERP (Search Engine Ranking Page)
Here you can see some really good examples