Sean "Diddy" Combs has said CCTV footage showing him attacking singer Cassie in a hotel hallway in 2016 is "inexcusable" and that he is "disgusted".
"It's so difficult to reflect on the darkest times in your life, but sometimes you got to do that," the rapper said in a video on Instagram.
"I was f***** up - I mean I hit rock bottom - but l make no excuses. My behaviour on that video is inexcusable. I take full responsibility for my actions in that video. I was disgusted. I was disgusted then when I did it. I'm disgusted now.
"I went and I sought out professional help. I got into going to therapy, going to rehab. I had to ask God for his mercy and grace. I'm so sorry. But I'm committed to be a better man each and every day. I'm not asking for forgiveness. I'm truly sorry."
The 54-year-old, whose homes in Los Angeles and Miami were raided by Homeland Security Investigations agents in March, has faced a series of public allegations of physical and sexual violence.
Footage obtained by CNN this week shows Combs - also known as P Diddy and Puff Daddy - wearing only a white towel as he punches and kicks Cassie in a Los Angeles hotel hallway on 5 March 2016.
The footage also shows Combs shoving and dragging the singer and throwing a vase in her direction.
Cassie, an R&B singer whose legal name is Cassandra Ventura, was his protege and girlfriend at the time.
The 37-year-old sued Combs in November with the lawsuit accusing him of rape and violent behaviour during their decade-long relationship.
The suit was settled the next day, but it led to intense scrutiny of Combs, who has since been named as a defendant in several sexual abuse lawsuits, along with a federal criminal sex-trafficking investigation that led authorities to the raid in March.
He denied the allegations in the lawsuits, but neither he nor his representatives had responded to the newly-emerged video until Sunday.
After the footage emerged, Douglas H Wigdor, lawyer for Ms Ventura, said in a statement in response:
"The gut-wrenching video has only further confirmed the disturbing and predatory behaviour of Mr Combs.
"Words cannot express the courage and fortitude that Ms Ventura has shown in coming forward to bring this to light."
Combs' Instagram apology is the hip hop mogul's most direct response after six months of allegations that have threatened his reputation and career.
Previous statements have been released through his lawyers.
The security camera video, dated March 5, 2016, closely resembles the description of an incident at an InterContinental Hotel in the Century City area of Los Angeles described in Ms Ventura's November lawsuit.
The suit alleges that Combs paid the hotel $50,000 (around £39,000) for the security video immediately after the incident.
Neither he nor his representatives have addressed that specific allegation.
CNN did not say how it obtained the footage.
Combs is not in danger of being criminally prosecuted for the beating.
The statutes of limitations for the assault and battery charges he would have been likely to face expired years ago.
(c) Sky News 2024: P Diddy: Rapper Sean Combs says video of him assaulting singer Cassie is 'inexcusable'