NORTH CHARLESTON, S.C. — South Carolina officials investigating the weekend shooting death of a black man by a police officer here released a video Thursday that for the first time showed the early moments of an encounter that would ultimately reignite anger about police misconduct.

The video, recorded on a camera mounted inside Officer Michael T. Slager’s patrol car, was released by the South Carolina Law Enforcement Division, which has been conducting the inquiry into the death of Walter L. Scott that led to Officer Slager’s being charged with murder and subsequently fired.

The patrol car’s recording does not show Officer Slager firing his Glock handgun at Mr. Scott as he fled after being stopped for driving with a broken taillight. But it revealed an encounter that, in its initial minutes, appeared professional and routine. A video shot by a bystander moments later captures the fatal shooting of Mr. Scott.

Only later in the recording, after Mr. Scott ran from his Mercedes-Benz toward the grassy area where he was fatally wounded, were there indications of a struggle, and any physical skirmish occurred beyond the camera’s range. Mr. Scott had a long court record, often for failure to pay child support or to show up for court hearings, and his survivors have speculated that he might have fled because of a pending warrant.