Vevo is the most popular dedicated YouTube channel in the U with 48.8 million views during the month of September.
181 million US internet users watched more than 39 billion online content videos in September, while video ad views totaled 9.4 billion, according to comScore.
Google sites, driven primarily by video viewing at YouTube.com, ranked as the top online video content property in September with 150.3 million unique viewers, followed by Yahoo! sites with 57.4 million, AOL with 53.8 million, Vevo with 50.3 million and Facebook.com with 46.4 million.
More than 39 billion video content views occurred during the month, with Google sites generating the highest number at 13.1 billion, followed by AOL, Inc. with 741 million. Google sites had the highest average engagement among the top ten properties.
The September 2012 YouTube partner data revealed that video music channel Vevo (48.8 million viewers) maintained the top position in the ranking, followed by Warner Music with 24.4 million.
Maker Studios Inc. climbed into the #3 position for the first time with 23.5 million viewers, followed by Machinima with 22.7 million and FullScreen with 21.2 million.
Among the top 10 YouTube partners, Machinima demonstrated the highest engagement (70 minutes per viewer) followed by VEVO (38 minutes per viewer). VEVO streamed the greatest number of videos (545 million), followed by Machinima (449 million).
Other notable findings from September 2012 include: 85%of the US Internet audience viewed online video.
The duration of the average online content video was 6.4 minutes, while the average online video ad was 0.4 minutes.
Video ads accounted for 19.3% of all videos viewed and 1.3% of all minutes spent viewing video online.