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Birdman 'Pulls Up' on Druski ... Menacing Surveillance Video

Druski's constant Birdman trolling seems to have finally caught up with him -- that is, if you buy this surveillance footage ... which shows the record exec "pulling up" on the homie.

TMZ Hip Hop has obtained some pretty shocking footage ... which we're told shows the Cash Money honcho and some goons literally dropping in and violently confronting Druski and co. at a studio session that the viral star was in late Friday night here in L.A.

Check it out ... you can see Birdman and his two friends facing off with Druski in a stairwell, and things get heated quickly -- with Baby apparently even attempting to put hands on Dru.

A minor scuffle ensues, and Druski and his pals go tumbling down the stairs as they try to escape ... making a run for it and beelining it through the halls of the studio -- with Birdman in close pursuit. We're told Dru had just finished filming for his reality show, "Coulda Been House," when this happened ... and from the looks of it, Birdman caught wind of it.

It would also appear that Birdman took something with him from all this ... namely, Druski's chain -- which he proudly flashed on social media afterward, writing ... "Surprise Party B*tch Slippin In Studio Richgang." Druski hasn't addressed the incident on any of his platforms.

Of course, the question here is ... is this real or fake??? Frankly, we're not even sure -- because this "beef" between Druski and Birdman has been walking the line of fact and fiction for a while, and Birdman himself certainly seems to think they have actual problems.

It all stems from this "Coulda Been Records" venture ... which has echoes of Birdman's Cash Money Records, right down to style and design of the logo. From the jump, Baby has made clear he does not approve -- this even though Druski has explained it's all for laughs.

That apparently doesn't matter to Birdman, who has repeatedly faced off with Druski (virtually) telling him to back down ... oftentimes in a pretty threatening way ... which seems legit.

We'll say this ... if this is all BS, kudos to both of them for being committed to the bit, 'cause this level of a skit -- assuming it is one -- is damn impressive. If it isn't ... good luck, Dru. 😬

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