The video shows a dark SUV stopped at 35th Street and Maple Avenue. The vehicle is seen narrowly avoiding crashing into the car that struck Roberto Diaz, who was riding his bike.
Police are trying to get in touch with the driver of that SUV, hoping that person might be able to provide them with new information on the car and driver they're trying to find.
The suspect vehicle is described as a blue Honda Accord or Civic.
Meantime, Diaz will be undergoing his sixth surgery tomorrow.
Doctors are hoping to be able to save his arm and leg.
MORE: Surveillance video shows teen being dragged by hit-and-run driver's car in South Los Angeles
Police say Diaz was struck by the car and dragged 1,500 feet after the hit-and-run driver allegedly blew through a stop sign.
Diaz had just bought a soda at a nearby store when he was hit while riding his bicycle through a crosswalk in the area of Maple Avenue and 37th Street on Aug. 6.
Surveillance video at a store on Martin Luther King Jr. Boulevard captured the moment the 15-year-old dislodged from the vehicle.
Witnesses saw Diaz's bike flying into the air.