Kim and Kanye sue over proposal video

KIM Kardashian and Kanye West sued a co-founder of YouTube claiming he violated a confidentiality agreement by posting a video of the couple's marriage proposal to his new video-sharing website.

The couple's lawsuit states Chad Hurley wasn't invited to the elaborate October 21 proposal at San Francisco's AT&T Park, but was allowed to stay because he signed an agreement not to post any video or images from the event.

West allowed other cameras to film the event for possible broadcast on E! Entertainment Television, home to his fiancee's show Keeping Up With the Kardashians, according to the suit.

Hurley posted a fuzzy two-and-a-half minute long video on his new website MixBit, that showed rapper West proposing to Kardashian while an orchestra played. The video also showed the ensuing celebration with Kardashian's family and invited guests toasting the newly-engaged couple.

Kardashian and West are seeking unspecified damages from Hurley and his company, Avos Systems.

"Exclusive rights, such as those sold by plaintiffs to publication of video of the event, are particularly valuable," the lawsuit states. "If people violate these rights ... they are of substantially diminished value."

A message sent through MixBit seeking comment from Hurley was not immediately retued.

Rapper Kanye West speaks during the 17th Annual Hollywood Film Awards Gala at the Beverly Hilton Hotel in Beverly Hills, just hours before his surprise, over-the-top proposal to Kim Kardashian. Picture: AP

West proposed to Kardashian on her 33rd birthday; the couple's first child North West was bo in June. The lawsuit was first reported by celebrity website TMZ.

The lawsuit comes as West postponed the rest of his Yeezus tour after a 60-foot (18-metre) LED screen used during his shows was damaged.

A representative for the rapper says a truck that carried the screen was in an accident on Wednesday that "damaged the gear beyond repair." The truck was on its way to Vancouver.

The rep said in a statement that it would be "impossible" to put on a show until the screen is repaired.

Yesterday's show in Vancouver and next week's shows in Denver and Minneapolis were postponed. The West rep planned to provide an update later on any new dates.

West's tour kicked off this month in Seattle. Rapper Kendrick Lamar is his opening act.