Adrien Broner had another run-in with the law ... this time he was handcuffed by police in Beverly Hills — and it was all caught on video.

TMZ obtained footage of the former boxer turned streamer being led in cuffs by a police officer past a bunch of people in the Beverly Hills business district on Sunday evening. The officer then places Broner — hands cuffed behind him -- into the back of a police vehicle. 

Law enforcement sources tell TMZ ... Broner was ultimately NOT arrested, although it was unclear why Broner was cut loose or if he received a citation.

We've asked police for an update ... so far no word back.

As you know, Broner was once a champion boxer, but now he focuses mainly on online streaming.