Viewabiliy of Video Ads. What value is this to a Brand?
Video Marketing with any outlet has different outcomes. The article below shows how Google has seen the impact viewability has.
The best retention of branding comes with a video and a video which is not over long. Facebook videos have also undergone this testing as well and there are statistics that support the Google statement. Take a look at the article.
Source: Google Proves the Importance of Video Ad Viewability to Brands