The footage, released by the PE Herald, shows the truck hitting four taxis and a car.
The latest reports indicate that three people died upon arrival at a hospital and 57 others were being treated for their injuries after an accident which claimed 22 lives last week in Fields Hill, Pinetown, the health department said on Monday.
Nineteen people were admitted to the RK Khan Hospital, department spokesman Sam Mkhwanazi said in a statement.
Three people died on arrival, nine were seriously injured, two were transferred to King Edward Hospital and one was discharged, Mkhwanazi said.
The remaining four were in a stable condition.
Four people were taken to InkosI Albert Luthuli Central Hospital (IALCH).
"Three are critical and one is stable," Mkhwanazi said.
The King Edward VIII Hospital had admitted 16 people.
Twelve people were treated and discharged and the remaining four were stable.
The other 18 were either taken to private hospitals or treated on the scene, Mkhwanazi said.
On Thursday, 22 people died when an articulated truck's brakes failed on Field's Hill.
The vehicle careened down the M13 and smashed into four minibus taxis and a car at an intersection at the bottom of the hill.
The truck driver Sanele Goodness May appeared in the Pinetown Magistrate's Court on Monday.
The 23-year-old Swaziland national cried when he was brought into the court.
May was arrested on Thursday on 22 counts of murder and one of reckless or negligent driving.
He was initially charged with culpable homicide, but National Prosecuting Authority spokeswoman Natasha Ramkisson confirmed that the charges had been upgraded to murder.
The case was postponed until September 16. May remains in custody at the Pinetown police station holding cells.