The Inside AdSense blog announced that Google will be discontinuing the Google Video units. Google Video units launched in October 2007 but due to not living up to the expectations Google hoped for, Google is going to “retire” the feature by the end of April.
In fact, many publishers were recently not happy with the video ad units performance, in terms of earnings through the AdSense network. So, starting now, new publishers can no longer sign up for video ad units, and in April, they will be completely discontinued. Google recommends that all publishers begin removing the ad units from their pages.