Facebook Hid Inflated Video Ad Metrics Error for Over a Year, Advertisers Allege

Lawsuit says erroneous metrics were overstated by as much as 900%

Plaintiffs claim Facebook engineers were aware of the miscalculation for more than a year but said nothing. Photo Illustration: Dianna McDougall; Sources: Getty Images

Facebook intentionally obfuscated the problem of overstated average watch times on paid video ads for more than a year, a group of digital marketers charged in court documents unsealed on Tuesday.

@kelseymsutton kelsey.sutton@adweek.com Kelsey Sutton is the streaming editor at Adweek, where she covers the business of streaming television.