{
  "dataset": "physical_pendulum_videos",
  "seed": 42,
  "generation_mode": "random",
  "num_videos": 200,
  "train_videos": 160,
  "val_videos": 40,
  "requested_duration_s": 15.0,
  "duration_s": 15.0,
  "fps": 12,
  "frames_per_video": 180,
  "image_size": [
    196,
    196
  ],
  "codec": "H.264",
  "pixel_format": "yuv420p",
  "audio": false,
  "ode": "theta_ddot = -(gravity/length)*sin(theta) - damping*theta_dot",
  "integrator": "RK4",
  "substeps_per_frame": 8,
  "integration_dt_s": 0.010416666666666666,
  "gravity_m_s2": 9.81,
  "length_m": 1.0,
  "renderer_world": {
    "viewport": [
      -5.0,
      25.0,
      -3.0,
      27.0
    ],
    "pivot": [
      10.0,
      10.5
    ],
    "rod_length": 8.0,
    "bob_radius": 1.5,
    "ground_y": -0.5
  },
  "timing": "CSV row n and decoded MP4 frame n both sample time n/fps",
  "split_unit": "whole video",
  "paths_relative_to": "dataset root",
  "normalized_labels": false,
  "cjepa_export": true,
  "cjepa_slots": {
    "path": "cjepa_slots.pkl",
    "num_slots": 4,
    "slot_dim": 32,
    "kind": "oracle simulator state (smoke-test adapter, not visual embeddings)"
  }
}