meta/modality.json

{
  "state": {
    "arm": {
      "start": 0,
      "end": 6
    },
    "gripper": {
      "start": 6,
      "end": 7
    }
  },
  "action": {
    "arm": {
      "start": 0,
      "end": 6
    },
    "gripper": {
      "start": 6,
      "end": 7
    }
  },
  "video": {
    "ego_view": {
      "original_key": "observation.images.ego_view"
    }
  }
}