(Bloomberg) -- Meta Platforms Inc. Chief Executive Officer Mark Zuckerberg rallied his employees to focus on video products, after they watched the stock lose a quarter of its value.

At a company-wide virtual meeting Thursday, Zuckerberg explained that the historic stock drop was a result of Meta’s weak forecast for revenue in the current quarter, according to a person who attended and was not authorized to speak about it. Zuckerberg echoed his remarks of a day earlier to investors, telling employees that the social networking giant faced an “unprecedented level of competition,” with the rise of TikTok, the short-video platform Facebook doesn’t own.

Zuckerberg appeared red-eyed and wore glasses, the person said. Employees were told he might tear up because he’d scratched his eye.

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