{
  "request_id": "c4b23d73-9d42-4101-a60b-9d90cafef59d",
  "started_at_utc": "2026-01-15T20:42:33.646572+00:00",
  "analysis_type": "semantic",
  "video": {
    "path": "/app/runs/c4b23d73-9d42-4101-a60b-9d90cafef59d/test_video.mp4",
    "sha256": "b584f8c47c4bd7f164d33ec4a1c2da96c3e5aaf47271e464e39b3fa95d7fe11d",
    "fps": 30.0,
    "total_frames": 5954,
    "duration_s": 198.46666666666667,
    "width": 576,
    "height": 1002
  },
  "sampling_policy": {
    "chunk_duration_s": 30.0,
    "frames_per_chunk": 8,
    "num_chunks": 7,
    "total_frames_sampled": 56,
    "chunks": [
      {
        "chunk_idx": 0,
        "start_time_s": 0.0,
        "end_time_s": 30.0,
        "start_frame": 0,
        "end_frame": 900,
        "sampled": 8,
        "indices": [
          0,
          128,
          257,
          385,
          514,
          642,
          771,
          899
        ]
      },
      {
        "chunk_idx": 1,
        "start_time_s": 30.0,
        "end_time_s": 60.0,
        "start_frame": 900,
        "end_frame": 1800,
        "sampled": 8,
        "indices": [
          900,
          1028,
          1157,
          1285,
          1414,
          1542,
          1671,
          1799
        ]
      },
      {
        "chunk_idx": 2,
        "start_time_s": 60.0,
        "end_time_s": 90.0,
        "start_frame": 1800,
        "end_frame": 2700,
        "sampled": 8,
        "indices": [
          1800,
          1928,
          2057,
          2185,
          2314,
          2442,
          2571,
          2699
        ]
      },
      {
        "chunk_idx": 3,
        "start_time_s": 90.0,
        "end_time_s": 120.0,
        "start_frame": 2700,
        "end_frame": 3600,
        "sampled": 8,
        "indices": [
          2700,
          2828,
          2957,
          3085,
          3214,
          3342,
          3471,
          3599
        ]
      },
      {
        "chunk_idx": 4,
        "start_time_s": 120.0,
        "end_time_s": 150.0,
        "start_frame": 3600,
        "end_frame": 4500,
        "sampled": 8,
        "indices": [
          3600,
          3728,
          3857,
          3985,
          4114,
          4242,
          4371,
          4499
        ]
      },
      {
        "chunk_idx": 5,
        "start_time_s": 150.0,
        "end_time_s": 180.0,
        "start_frame": 4500,
        "end_frame": 5400,
        "sampled": 8,
        "indices": [
          4500,
          4628,
          4757,
          4885,
          5014,
          5142,
          5271,
          5399
        ]
      },
      {
        "chunk_idx": 6,
        "start_time_s": 180.0,
        "end_time_s": 198.47,
        "start_frame": 5400,
        "end_frame": 5954,
        "sampled": 8,
        "indices": [
          5400,
          5479,
          5558,
          5637,
          5716,
          5795,
          5874,
          5953
        ]
      }
    ]
  },
  "runtime": {
    "vllm_base_url": "http://didiAI-video-vllm-buster:54500",
    "model": "busterx"
  }
}