Some 11.5 billion videos were viewed on the internet in the US in March, a 64pc jump from a year ago, web analytics firm ComScore has said.
The figure is a 13pc gain on February 2008.
Google sites were the top US video property with more than 4.3 billion videos viewed (38pc market share), 98pc of which was accounted for by YouTube.
Fox Interactive Media ranked second with 477 million videos viewed (4.2pc market share), followed by Yahoo! sites with 328 million (2.9pc market share) and Viacom Digital with 249 million ( 2.2pc market share).
Microsoft sites came in fifth with 2.1pc of market share, at 245 million video views.
ComScore’s figures show that nearly 139 million people in the US watched an average of 83 videos per viewer in March. Google Sites attracted the most viewers at 85.7 million, with Fox Interactive attracting the second largest amount of viewers at 54.3 million, followed by Yahoo! Sites at 37.5 million.
The research showed that 73.7pc of the total US internet audience viewed online video, with 84.8 million viewers watching 4.3 billion videos on YouTube, averaging 50.4 videos per viewer, and 47.7 million viewers watched 400 million videos on MySpace, averaging 8.4 videos per viewer.
The average online video duration was 2.8 minutes and the average online video viewer watched 235 minutes of video, ComScore said.
By Niall Byrne