Actor Shia LaBeouf’s wild streak emerged early this morning during yet another incident involving alcohol.

In a video  obtained by TMZ, the 25-year-old “Transformers”  actor gets punched on the sidewalk outside a bar by a guy in a white T-shirt.

RadarOnline spoke to an eyewitness, who said LaBeouf had to be “pulled away” from a bar patron around 12:30 a.m. in the Cinema Public House in Vancouver, Canada, where LaBeouf is filming the thriller “ The Company You Keep.”

“He got into a confrontation with a couple of people,” the witness told Radar. “He took a few punches to the face. He was obviously pretty intoxicated.”

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The video shows a man smacking LaBeouf in the face while a another man — on crutches — hobbles over and tries to break up the fight. Two bystanders try to calm down LaBeouf, who paces quickly back toward the bar.

“Better lay low,” one of them says. “Better lay low right now.”

It’s good advice for the hot-tempered star whose “wee delinquent streak” was chronicled by GQ in 2008.  That same year TMZ reported LaBeouf was arrested on suspicion of DUI and this February he was involved in a bar brawl at Mad Bull’s Tavern in Sherman Oaks, Calif.