think.storage.googleapis.com:docs:5-factors-of-video-viewability.pdf 2015-05-08 13-51-49

Advertisers want to know that when they pay for a video ad on YouTube or elsewhere across the web, that the advertisement can actually be seen by viewers. A lot can affect an ad being seen, such as the viewer never scrolling to the part of the page where the ad is placed, or them simply scrolling past the ad too quickly to really catch a glimpse. Taking a look into these things, Google recently published the results of a study identifying the "5 factors of viewability," or, in other words, the things that impact the chance of a video ad being seen... Read more of this post