A second top executive of Hollywood mogul Jeffrey Katzenberg’s short-form video startup has abruptly left ahead of the company’s launch next year.

Janice Min, best known for turning around trade publication The Hollywood Reporter, left Quibi Wednesday — without explanation. Her exit marks the second big departure months ahead of Quibi’s launch as it follows last month’s exit of Tim Connolly, the head of partnerships and advertising.

While it’s unclear why Min left, sources said the former Us Weekly editor-in-chief, who held the role of Quibi’s news content chief, bumped heads with a demanding Katzenberg.

“Janice was brought in to be a tastemaker, but Jeffrey is the ultimate tastemaker when it comes to the company,” one source told The Post. “I saw firsthand the difficulty of his strong-held opinions about what he thinks is going to work. There’s no diplomacy about that. That’s a style that can rub people the wrong way.”

While Katzenberg “isn’t a screamer,” he’s a “strong-willed micromanager,” the source said.

Another source likened the hard-charging Katzenberg to a “machine” with seemingly limitless energy that employees can find exhausting.

“He’s just on it. You can’t fake it,” the source said. “He was at Burning Man for 36 hours with two important people for his business, and then he was up on Sunday of Labor Day at his place for a breakfast meeting.”

Min, by contrast, was “not an immediate phone call returner,” this person added.

Min — one of Quibi’s first employees when she joined last September — declined to comment on her departure.

A Quibi spokeswoman declined to address Min’s relationship with Katzenberg, only saying: “Janice Min will be leaving Quibi. We thank her for her leadership and wish her well as she embarks on her next chapter.”

Connolly did not respond to a request for comment. An insider said that his exit had more to do with the company satisfying all of its ad needs for the year after Quibi banked six launch sponsors and raised $1 billion.