{
  "video": "6_2.mp4",
  "task": "6_2",
  "instruction_index": 2,
  "total_instructions_for_video": 2,
  "instruction": {
    "category_label": "audio_only",
    "category": "A2",
    "operation": "A2.1 Loudness & Dynamics",
    "prompt_en": "Boost the level of the human speech to make it clearer and more prominent against the loud engine noise.",
    "audio_label": {
      "audio_op": "transform",
      "sound_type": "speech",
      "edit_aspect": "intensity"
    },
    "difficulty": {
      "d1_object_localization": "easy",
      "d1_reason": "This is an audio-only instruction and does not require locating a specific visual object in the frame.",
      "d2_audio_complexity": "complex",
      "d3_cross_modal_linkage": "explicit",
      "d3_reason": "The instruction is audio-only and explicitly describes the intended audio transformation without implying any visual changes."
    }
  }
}