Jung, 30, is accused of recording sex videos of about 10 women he slept with and uploading them on a KakaoTalk messenger chat room to share them with other entertainers, including Seungri, a member of K-pop boy band BIGBANG.
Seungri has also been under probe over the sex tapes and a slew of other charges that include arranging escort services for prospective investors.
At a court hearing held earlier in the day, Jung admitted to his wrongdoings.
“I am sorry. I made a big and inexcusable mistake, and I admit my guilt,” the 30-year-old, with teary eyes, read from a note. “I will accept the court decision without a battle.
“I apologize to the ladies who have suffered because of me. I will live my days repenting for the sins.”
Police are also probing Jung and a few others in the nightclub business over allegations of cozy ties between them and police, with a ranking police officer suspected of having helped them cover up their illicit acts in the past.
President Moon Jae-in on Monday ordered a thorough investigation into the snowballing drug and sex scandal involving K-pop stars including Seungri.