According to the latest market study from comScore, 175 million U.S. Internet users watched online video content in September 2010 for an average of 14.4 hours per viewer.
The total U.S. Internet audience engaged in more than 5.2 billion viewing sessions during the course of the month.
Google Sites, driven primarily by video viewing at YouTube.com, ranked as the top online video content property with 144.2 million unique viewers. Yahoo! Sites captured the #2 spot with 54.4 million viewers, followed by Facebook.com with 52.2 million viewers.
Microsoft Sites jumped 3 positions in September, securing fourth place with 45.5 million viewers. Google Sites had the highest number of overall viewing sessions with 1.9 billion and average time spent per viewer at 260 minutes, or 4.3 hours.
Americans viewed more than 4.3 billion video ads in September, with Hulu generating the highest number of video ad impressions at 794 million. Tremor Media Video Network ranked second overall (and highest among video ad networks) with 526 million ad views, followed by BrightRoll Video Network (476 million) and ADAP.TV (444 million).
Video ads reached 45 percent of the total U.S. population an average of 32 times during the month. Hulu delivered the highest frequency of video ads to its viewers with an average of 27.5 over the course of the month.
Other findings from the comScore study include:
- The top video ad networks in terms of their potential reach of the total U.S. population were: ScanScout at 46.8 percent, BrightRoll Video Network at 44.5 percent, and Break Media at 44.1 percent.
- 83.9 percent of the total U.S. Internet audience viewed online video.
- The duration of the average online content video was 4.9 minutes, while the average online video ad was 0.4 minutes.
- Video ads accounted for 12.3 percent of all videos viewed and 1.2 percent of all minutes spent viewing video online.