A man who was buried alive two years ago under the rubble of his Midtown brownstone following a crane collapse relived his harrowing tale in court yesterday.

“I was watching TV, when I hear a noise — something breaking,” John Gallego remembered at the manslaughter trial of accused killer-crane rigger William Rapetti.

“I look out the window, and I see a huge thing coming down,” he remembered of the March 2008 collapse on East 51st Street, which killed seven people — and barely spared him.

“I couldn’t do anything,” Gallego said of standing at his living-room window and watching the 200-foot crane fall onto his four-story, East 50th Street brownstone.

“The next thing, I was buried alive. It was very dark. My first thought was, ‘I’m dead.’ It was a very tight space.”

He struggled to fish his cellphone out of his pocket and made two calls. The first was to his girlfriend.

“I’m barely alive! I need help!” he told her. “Please call 911!” he said, before he did so himself.

“Please! Help me!” he was heard saying on a recording played in court.

“Sir, I can’t understand you!” the operator snaps. “Stop crying. A building fell on you? The building is on top of you?”

Gallego’s answer was unintelligible — just moans.

Prosecutors blame the collapse on Rapetti’s decision to flout regulators’ directions by using four worn polyester straps to temporarily suspend an 11,000-pound piece of steel 18 stories up the crane.

Six construction workers and Gallego’s friend, visiting from Miami, were killed.