According to comScore's (NASDAQ:SCOR) Video Metrix service, 182 million U.S. Internet users watched 38.7 billion online content videos in December, while video ad views totaled 11.3 billion.Some 84.9% of the U.S. Internet audience viewed online video. The duration of the average online content video was 5.4 minutes, while the average online video ad was 0.4 minutes. Video ads accounted for 22.6% of all videos viewed and 1.9% of all minutes spent viewing video online.