Some 182.5 million Americans watched 39.3 billion online content videos in March 2013, and the number of video ad views reached an all-time high of 13.2 billion, according to comScore Video Metrix data released this week.

Among the notable findings: 84.5% of the US Internet audience viewed online video; the duration of the average online content video was 5.6 minutes, while average online video ad duration was 0.4 minutes; and video ads accounted for 25.1% of all videos viewed and 2.2% of all minutes spent viewing video online.

Below, additional findings issued by comScore from its March 2013 data.

Top 10 Video Content Properties by Unique Viewers

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