{
  "video": "4_2.mp4",
  "task": "4_2",
  "instruction_index": 1,
  "total_instructions_for_video": 2,
  "instruction": {
    "category_label": "video_only",
    "category": "V2",
    "operation": "V2.2 Visual Crop & Zoom",
    "prompt_en": "Apply a 1.2x digital zoom, centering on the cat's upper body and head.",
    "audio_label": {
      "audio_op": "none",
      "sound_type": "n/a",
      "edit_aspect": "n/a"
    },
    "difficulty": {
      "d1_object_localization": "hard",
      "d1_reason": "The instruction requires locating and centering on a specific part of the cat (upper body and head) within the frame, which is not a global operation nor an extreme close-up filling most of the frame.",
      "d2_audio_complexity": "simple",
      "d3_cross_modal_linkage": "none",
      "d3_reason": "This is a pure video-only edit with no audio operation, so no cross-modal inference is required."
    }
  }
}