The commercial broadcaster said that video views across ITV.com and ITV Local grew by 21% month on month for the last five months of this year, with 12m video views in May alone.
On Sunday June 1, the day after 'Britain's Got Talent' finished its run on ITV1, more than 8,000 hours of video were viewed. The entire series attracted 6m video views on ITV.com.
The new set of figures also show that average daily unique users to ITV.com have doubled to 6.8m in May since its relaunch in August 2007.
ITV.com has also reported a four-fold rise in video views since August, which represents an average increase of 53% month-on-month.
The broadcaster's new catch-up service is also growing in popularity, with 'Coronation Street' leading the list of all-time most viewed with 5m views. The top 10 most watched shows also include 'Dancing on Ice', 'Benidorm, Headcases' and 'Secret Diary of a Call Girl'.
Jeff Henry, the managing director of ITV Consumer, said: "The growth in consumer demand for video was anticipated and stimulated by the relaunch of our sites last year which provide a fantastic rich user experience in a world class environment with exciting and unique content.
"We are now seeing our audience telling us their linked experience is incredibly attractive and we will continue to build on this with new developments in the months to come.
"Our turnaround plan sets out our ambition to significantly grow our online assets and these numbers reaffirm our belief in the potential of this area."
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