The data comes from the car as a series of properties in either CSV or JSON format (shown below), which changes over time. The properties relate directly to the time-code included with the telemetry file which can be matched to the footage to create the finished piece. 
  {
    "racingNumber": 44,
    "eventTimestamp": "2018-03-24 18:09:44.8290000",
    "carSpeed": 273,
    "gearNumber": 7,
    "throttleApplied": 98,
    "brakeApplied": 0,
    "DRSControlMode": 0,
    "steeringAngle": -6
  },
  {
    "racingNumber": 44,
    "eventTimestamp": "2018-03-24 18:09:44.8680000",
    "carSpeed": 275,
    "gearNumber": 7,
    "throttleApplied": 100,
    "brakeApplied": 0,
    "DRSControlMode": 0,
    "steeringAngle": -5
  },