She continued, saying, "Kevin Hart was privy to me wanting to expose him as I have made countless attempts to expose this information to various blogs, in an attempt to also get paid".
"I'm at a place in my life where I feel like I have a target on my back and because of that I should make smart decisions", he said in the video.
He said there was "no excuses" but added that someone was trying to seek financial gain over his mistakes, and he'd rather confess than let that happen.
In a video addressed to his spouse Eniko Parrish and kids Heaven Hart and Hendix Hart, his children from a previous marriage, the comedian apologised for his "bad error in judgement".
TMZ, which first showed the image, says it is part of a video that also includes two people having sex followed by a naked man getting dressed, who appears to look like Hart.
The suspect is accused of contacting the comedian and demanding a "multi-million dollar" sum to prevent the "sexual provocative" video that allegedly features the Hart from going public.
"At the end of the day, man, I just simply got to do better", he said.
He wrote alongside the video: "Sending so many apologies to my wife and kids".
The extortionist is demanding an "8-figure" sum, the Federal Bureau of Investigation is on the case, and Twitter is having a field day.
Hart stated that he isn't ideal and has never claimed to be, but did take responsibility for his actions. So when you do find something that stimulates you on a mental and physical and emotional level, at this age what else do I need?
Kevin's rep confirmed he had been the victim of extortion, telling People: 'Someone tried to set Kevin up in a failed extortion attempt.