{
  "video": "/home/claude/elec/build/story/showreel.mp4",
  "analysis_domain": {
    "signal_units": "8bit_limited_range_code_values",
    "input_range": "frame_metadata_or_yuvj; otherwise_limited_assumed",
    "grayscale_input": "full_range_even_if_tv_tagged",
    "transfer_conversion": "none",
    "applicability": "SDR_code_value_heuristics; HDR_delivery_acceptance_not_evaluated"
  },
  "overall_score": 45.8,
  "all_passed": false,
  "checks": [
    {
      "name": "brightness",
      "passed": true,
      "score": 31.9,
      "message": "Brightness is well-balanced (brightness: 40.8)",
      "details": {
        "y_avg": 40.80014205607477,
        "target_range": [
          40,
          200
        ]
      }
    },
    {
      "name": "contrast",
      "passed": false,
      "score": 23.0,
      "message": "Video has low contrast (std dev: 11.5). Image may appear flat. Consider increasing contrast.",
      "details": {
        "y_std": 11.508834696261683,
        "y_low": 30.47196261682243,
        "y_high": 59.93457943925234,
        "target_range": [
          20,
          100
        ],
        "metric": {
          "name": "ffmpeg.signalstats.YHIGH-YLOW",
          "available": true,
          "value": 11.508834696261683,
          "unit": "percent_of_8bit_luma_range",
          "raw": {
            "y_low": 30.47196261682243,
            "y_high": 59.93457943925234,
            "unit": "8bit_luma"
          }
        }
      }
    },
    {
      "name": "saturation",
      "passed": false,
      "score": 8.5,
      "message": "Video appears desaturated (estimated: 4.3%). Consider increasing saturation.",
      "details": {
        "saturation_pct": 4.269104722810279,
        "sat_avg": 7.727079548286604,
        "metric": {
          "name": "ffmpeg.signalstats.SATAVG",
          "available": true,
          "value": 4.269104722810279,
          "unit": "percent_of_8bit_yuv_saturation_range",
          "raw": {
            "value": 7.727079548286604,
            "unit": "signalstats_chroma_magnitude",
            "full_scale": 181.0
          }
        }
      }
    },
    {
      "name": "audio_levels",
      "passed": true,
      "score": 96.7,
      "message": "Audio loudness is good (-17.6 LUFS)",
      "details": {
        "lufs": -17.63,
        "true_peak": -1.22,
        "loudness_range": 1.5,
        "target_lufs": -16
      }
    },
    {
      "name": "color_balance",
      "passed": true,
      "score": 68.6,
      "message": "Color cast detected: blue (max deviation: 10.5%). Consider white balance correction.",
      "details": {
        "r_mean": 38.693150068535836,
        "g_mean": 40.8004346976324,
        "b_mean": 46.32487095950155,
        "max_deviation": 10.456460522389586,
        "color_cast": [
          "blue"
        ]
      }
    },
    {
      "name": "temporal_motion",
      "passed": true,
      "score": 36.8,
      "message": "Temporal motion is adequate (63% near-static frames)",
      "details": {
        "static_fraction": 0.6318252730109204,
        "mean_motion": 1.1590170968352576,
        "median_motion": 0.127303,
        "frames_analyzed": 641,
        "static_frame_floor": 0.35,
        "static_fraction_threshold": 0.9
      }
    }
  ],
  "recommendations": [
    "Video has low contrast (std dev: 11.5). Image may appear flat. Consider increasing contrast.",
    "Video appears desaturated (estimated: 4.3%). Consider increasing saturation."
  ]
}