Can’t Lose chronicles the start of KSI’s boxing training up until his fight against Joe Weller in February.
The documentary also sees the YouTuber prepare for his next boxing match, which will be against US vlogger Logan Paul in Manchester on 25 August.
“It has everything from my very first training sessions, up to the changing room before the fight.
“You also get to see what I get up to between all the hard work and training that I did as well, plus highlights from the actual fight from millions of angles. But overall, it looks insane. It’s got slow-mo and everything. It’s fucking gas.”
The 70-minute documentary, which will be available on digital download from Sony Pictures Home Entertainment, was produced by fellow YouTuber Callum McGinley and his company, After Party Studios.
In a statement, the creator says he’s “really excited” for Sony Pictures to release it.
“From the beginning, this felt like a story that needed to be told, and shows such a different side to one of the most established YouTubers of this generation,” he said.
Can’t Lose is out now and more information about the documentary can be found on the official website.
Find out what went down at the UK press conference for the KSI vs Logan Paul fight, or read our summary of KSI’s match against Joe Weller.