Robin Thicke 'drunk and high' during promo for Blurred Lines

Robin Thicke in the video for Blurred Lines. Photo / Supplied

Robin Thicke was drunk and high every time he did an interview to promote his single Blurred Lines, according to his testimony as part of the high-profile legal battle over the song.

Footage obtained by The Hollywood Reporter shows depositions given by Pharrell Williams and Thicke during the court case earlier this year in which they were found guilty of ripping off Marvin Gaye's Got To Give It Up with their 2013 hit.

They were ordered to pay Gaye's estate $7.3 million following a three-week trial in February and March.

In the footage, Williams becomes annoyed and struggles to answer questions about the song's chords and music notation, and says, "I did not go in the studio with the intention of making anything feel like, or to sound like, Marvin Gaye."

However, when asked if he was trying to pretend he was the soul legend while making Blurred Lines, the singer answered, "At that particular time, no. But as I look back, I feel that feeling."

During Thicke's testimony, which was taken in April, 2014, the pop star admitted he was drunk and high on pain-killer Vicodin during a 2013 interview with Oprah Winfrey to promote the single, and he added, "With all due respect, I was high and drunk every time I did an interview last year."

The lawsuit was brought by Gaye's children Nona, Frankie and Marvin Gaye III, who inherited the copyright to their father's music after his death in 1984.

Thicke previously admitted he did not give the trial his full attention because he was struggling to deal with his split from actress Paula Patton. The former couple's divorce was finalised in the weeks after the court case concluded.

"I didn't give my all to the trial," he told The New York Times. "It simply wasn't as important to me as what was going on in my personal life. I was lost at the time. I had lost my way."

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-AAP