Since the start of this week, Mail Online users have had access to a comprehensive selection of national and international news, celebrity and lifestyle video clips accompanying main stories.
ITN On is also supplying celebrity content such as movie reviews and interviews with music and TV stars. The company claims the new partnership is set to create dozens of video packages on Mail Online each week.
Digital ads are being packaged around the content through a deal with video search engine Blinkx, with revenue being split between all three companies.
Brands currently advertising around footage of Michael Jackson's memorial service include Unilever, South Africa Tourism and Santander.
The deal extends ITN On's presence on popular digital platforms in the UK. Other business partners already established include Bebo, YouTube, Yahoo and Mail Online's newspaper rival Telegraph Media Group.
ITN On's ad-funded content boasts an average of 20 million views a month and the division's YouTube channels regularly sit in the top five most-viewed categories.
Mark Browning, commercial director of ITN On, said he was "delighted" with the association with the Daily Mail and The Mail on Sunday, and said the video clips "will complement existing text and stills content to offer compelling viewing for users".
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