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      "run_id": "20261031T172615604223Z",
      "source": "20260901_095145.mp4",
      "time_seconds": 1320.359,
      "source_frame": 39610,
      "host_gps": {
        "latitude": 7.009288,
        "longitude": 125.504821,
        "speed_kmh": 0.7,
        "course_degrees": 35.228255,
        "reported_accuracy_m": 2.894995
      },
      "window": {
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        "frames": 150,
        "partial": false
      },
      "observed_vehicle_tracks": 2,
      "pedestrian_candidates": 2,
      "vehicle_associated_people": 1,
      "mean_observed_vehicle_tracks": 2.3466666666666667,
      "flow": {
        "directions": {
          "image_left": 1,
          "image_right": 0,
          "image_up": 0,
          "image_down": 0,
          "low_residual": 0
        },
        "dominant": "image_left",
        "supported_tracks": 1,
        "observed_vehicle_tracks": 2,
        "unknown_tracks": 1,
        "moving_supported_tracks": 1,
        "median_normalized_speed": 0.15122503734250714,
        "background_model_valid": true,
        "scope": "sampled_image_motion_not_road_traffic_volume"
      },
      "traffic_movement": {
        "moving": 1,
        "stationary_candidates": 0,
        "unknown": 1,
        "direction_counts": {
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          "image_up": 0,
          "image_down": 0
        },
        "dominant": "image_left",
        "host_context": {
          "state": "stopped_gps_supported",
          "median_speed_kmh": 0.0,
          "samples": 3,
          "window_seconds": 3,
          "reason": "GPS_testing_thresholds"
        },
        "scope": "stopped_host_validation_case",
        "physical_vehicle_speed_available": false
      },
      "quality": {
        "background_fit_valid_fraction": 1.0,
        "observed_only_motion": true,
        "world_velocity_available": false,
        "gps_location_kind": "camera_vehicle",
        "person_filter_validated": false,
        "physical_clock_alignment_validated": false
      }
    }
  ]
}
