LOS ANGELES — Seven months ahead of its planned launch, Quibi, the short-form video platform from the film executive Jeffrey Katzenberg, experienced some backstage drama on Wednesday with the departure of one of its top executives, Janice Min.

Ms. Min, the former co-president and chief creative officer of The Hollywood Reporter-Billboard Media Group, joined Quibi last September. She was hired by the Quibi chief executive and co-founder Meg Whitman, who was formerly the chief executive of Hewlett-Packard and eBay, and charged with running its news division.

Quibi confirmed that Ms. Min was leaving, saying in a statement, “We thank her for her leadership and wish her well as she embarks on her next chapter.” Ms. Min did not immediately reply to requests for comment.

The departure was a surprise to the Hollywood community, which has watched Mr. Katzenberg and Ms. Whitman sign up big-name directors like Steven Spielberg, Steven Soderbergh and Paul Feig, among many others, to create shows made especially for mobile devices, with episodes lasting no more than 10 minutes.