{
  "settings": "Quality target: mean VMAF >= 95 and 5th-percentile frame VMAF >= 92, x265 slow, chosen by encode_quality_target.py. Baseline: libx264 medium CRF 20.",
  "total_baseline_bytes": 78398728,
  "total_optimized_bytes": 32984704,
  "total_reduction_percent": 57.93,
  "clips": [
    {
      "source": "AdobeStock_512674505.mov",
      "seconds": 18.463,
      "baseline": {
        "codec": "libx264",
        "preset": "medium",
        "crf": 20,
        "encode_seconds": 2.6664327000034973,
        "video": "baseline_h264.mp4",
        "video_bytes": 10095686,
        "frames": 553,
        "vmaf_mean": 95.87616496383363,
        "vmaf_p5": 94.09881,
        "vmaf_min": 93.461911,
        "vmaf_neg_mean": 94.47642423508137,
        "vmaf_neg_p5": 92.655795,
        "vmaf_neg_min": 91.888923,
        "kbps": 4374.5
      },
      "optimized": {
        "codec": "libx265",
        "preset": "slow",
        "crf": 24,
        "target": 95,
        "floor": 92,
        "metric": "vmaf",
        "limited_by": "target",
        "search_seconds": 135.91708549996838,
        "probes": 5,
        "video": "optimized.mp4",
        "video_bytes": 4218200,
        "frames": 553,
        "vmaf_mean": 95.56120947377939,
        "vmaf_p5": 93.793159,
        "vmaf_min": 92.88453,
        "vmaf_neg_mean": 94.09952705244123,
        "vmaf_neg_p5": 92.260319,
        "vmaf_neg_min": 91.38608,
        "kbps": 1827.7
      },
      "reduction_percent": 58.22,
      "note": "Complete clip, native resolution/frame rate, silent 8-bit YUV420. Both outputs are scored against the source, frame-index aligned, with standard and NEG VMAF. The reduction combines the H.264-to-HEVC switch, the slower preset, and encoding to a lower measured quality than the baseline; it is not an equal-quality comparison. Existing encoder controls selected automatically, not proprietary compression. Search time is the sum of probe encodes and scoring on this machine.",
      "clip": "Studio talk",
      "id": "512674505",
      "fixed_hevc": {
        "codec": "libx265",
        "preset": "slow",
        "crf": 20,
        "measured_on": "complete clip",
        "video_bytes": 8049371,
        "vmaf_mean": 97.19,
        "quality_target_video_bytes": 4218200,
        "quality_target_vmaf_mean": 95.56,
        "reduction_percent": 47.6
      }
    },
    {
      "source": "AdobeStock_388016235.mov",
      "seconds": 26.44,
      "baseline": {
        "codec": "libx264",
        "preset": "medium",
        "crf": 20,
        "encode_seconds": 4.097755099995993,
        "video": "baseline_h264.mp4",
        "video_bytes": 25089281,
        "frames": 661,
        "vmaf_mean": 97.44221596066566,
        "vmaf_p5": 95.117212,
        "vmaf_min": 93.801841,
        "vmaf_neg_mean": 95.70237471406959,
        "vmaf_neg_p5": 93.367516,
        "vmaf_neg_min": 91.992678,
        "kbps": 7591.3
      },
      "optimized": {
        "codec": "libx265",
        "preset": "slow",
        "crf": 26,
        "target": 95,
        "floor": 92,
        "metric": "vmaf",
        "limited_by": "target",
        "search_seconds": 170.2067097000545,
        "probes": 5,
        "video": "optimized.mp4",
        "video_bytes": 10456787,
        "frames": 661,
        "vmaf_mean": 95.14648599092284,
        "vmaf_p5": 92.848245,
        "vmaf_min": 91.735132,
        "vmaf_neg_mean": 93.19430273827534,
        "vmaf_neg_p5": 90.835294,
        "vmaf_neg_min": 89.760039,
        "kbps": 3163.9
      },
      "reduction_percent": 58.32,
      "note": "Complete clip, native resolution/frame rate, silent 8-bit YUV420. Both outputs are scored against the source, frame-index aligned, with standard and NEG VMAF. The reduction combines the H.264-to-HEVC switch, the slower preset, and encoding to a lower measured quality than the baseline; it is not an equal-quality comparison. Existing encoder controls selected automatically, not proprietary compression. Search time is the sum of probe encodes and scoring on this machine.",
      "clip": "Basketball",
      "id": "388016235",
      "fixed_hevc": {
        "codec": "libx265",
        "preset": "slow",
        "crf": 20,
        "measured_on": "four 5-second samples",
        "video_bytes": 17039862,
        "vmaf_mean": 98.74,
        "quality_target_video_bytes": 7960573,
        "quality_target_vmaf_mean": 95.08,
        "reduction_percent": 53.3
      }
    },
    {
      "source": "AdobeStock_1381731757.mov",
      "seconds": 5.64,
      "baseline": {
        "codec": "libx264",
        "preset": "medium",
        "crf": 20,
        "encode_seconds": 1.2064066999591887,
        "video": "baseline_h264.mp4",
        "video_bytes": 9059848,
        "frames": 141,
        "vmaf_mean": 97.35525264539007,
        "vmaf_p5": 93.946299,
        "vmaf_min": 93.509871,
        "vmaf_neg_mean": 95.5397740283688,
        "vmaf_neg_p5": 92.009635,
        "vmaf_neg_min": 91.582599,
        "kbps": 12850.8
      },
      "optimized": {
        "codec": "libx265",
        "preset": "slow",
        "crf": 24,
        "target": 95,
        "floor": 92,
        "metric": "vmaf",
        "limited_by": "floor",
        "search_seconds": 62.30743290000828,
        "probes": 5,
        "video": "optimized.mp4",
        "video_bytes": 5111966,
        "frames": 141,
        "vmaf_mean": 96.09240478014185,
        "vmaf_p5": 92.356942,
        "vmaf_min": 90.575572,
        "vmaf_neg_mean": 94.10652797163121,
        "vmaf_neg_p5": 90.222846,
        "vmaf_neg_min": 88.65627,
        "kbps": 7251
      },
      "reduction_percent": 43.58,
      "note": "Complete clip, native resolution/frame rate, silent 8-bit YUV420. Both outputs are scored against the source, frame-index aligned, with standard and NEG VMAF. The reduction combines the H.264-to-HEVC switch, the slower preset, and encoding to a lower measured quality than the baseline; it is not an equal-quality comparison. Existing encoder controls selected automatically, not proprietary compression. Search time is the sum of probe encodes and scoring on this machine.",
      "clip": "Sword action",
      "id": "1381731757",
      "fixed_hevc": {
        "codec": "libx265",
        "preset": "slow",
        "crf": 20,
        "measured_on": "complete clip",
        "video_bytes": 8505099,
        "vmaf_mean": 98.48,
        "quality_target_video_bytes": 5111966,
        "quality_target_vmaf_mean": 96.09,
        "reduction_percent": 39.9
      }
    },
    {
      "source": "AdobeStock_1983044765.mov",
      "seconds": 13.8,
      "baseline": {
        "codec": "libx264",
        "preset": "medium",
        "crf": 20,
        "encode_seconds": 2.8508813000516966,
        "video": "baseline_h264.mp4",
        "video_bytes": 34153913,
        "frames": 345,
        "vmaf_mean": 99.86672297971015,
        "vmaf_p5": 99.678777,
        "vmaf_min": 93.836948,
        "vmaf_neg_mean": 99.74125653623187,
        "vmaf_neg_p5": 98.077524,
        "vmaf_neg_min": 92.47919,
        "kbps": 19799.4
      },
      "optimized": {
        "codec": "libx265",
        "preset": "slow",
        "crf": 28,
        "target": 95,
        "floor": 92,
        "metric": "vmaf",
        "limited_by": "floor",
        "search_seconds": 229.01302500010934,
        "probes": 6,
        "video": "optimized.mp4",
        "video_bytes": 13197751,
        "frames": 345,
        "vmaf_mean": 97.39164329855072,
        "vmaf_p5": 92.142421,
        "vmaf_min": 89.268176,
        "vmaf_neg_mean": 96.05570450724638,
        "vmaf_neg_p5": 90.391013,
        "vmaf_neg_min": 88.208216,
        "kbps": 7650.9
      },
      "reduction_percent": 61.36,
      "note": "Complete clip, native resolution/frame rate, silent 8-bit YUV420. Both outputs are scored against the source, frame-index aligned, with standard and NEG VMAF. The reduction combines the H.264-to-HEVC switch, the slower preset, and encoding to a lower measured quality than the baseline; it is not an equal-quality comparison. Existing encoder controls selected automatically, not proprietary compression. Search time is the sum of probe encodes and scoring on this machine.",
      "clip": "Fireworks",
      "id": "1983044765",
      "fixed_hevc": {
        "codec": "libx265",
        "preset": "slow",
        "crf": 20,
        "measured_on": "complete clip",
        "video_bytes": 31832384,
        "vmaf_mean": 99.87,
        "quality_target_video_bytes": 13197751,
        "quality_target_vmaf_mean": 97.39,
        "reduction_percent": 58.5
      }
    }
  ],
  "fixed_hevc_total": {
    "fixed_bytes": 65426716,
    "quality_target_bytes": 30488490,
    "reduction_percent": 53.4,
    "note": "Same encoder and preset; only CRF differs. Not an equal-quality comparison. One clip is measured on its search samples."
  }
}