{
 "tool": "video-to-gif",
 "url": "https://toolio.pongvn.com/tools/video-to-gif",
 "measured_at": "2026-09-01",
 "corpus": {
  "name": "Blender open-movie trailers + Jellyfish test clip",
  "kind": "video",
  "source": "download.blender.org (CC-BY 3.0) · test-videos.co.uk",
  "note": "Publisher-encoded releases, cut to five seconds with a stream copy — we did not re-encode them, so the input bitrate is a published fact rather than a choice of ours. The same film is included at 480p, 720p and 1080p so the ratio can be read against the source bitrate.",
  "n": 7,
  "files": {
   "bbb_1080p.mov": {
    "w": 1920,
    "h": 1080,
    "fps": 25.0,
    "sec": 5.1,
    "bitrate_kbps": 6568,
    "bytes": 4185547
   },
   "bbb_480p.mov": {
    "w": 853,
    "h": 480,
    "fps": 25.0,
    "sec": 5.1,
    "bitrate_kbps": 2401,
    "bytes": 1530278
   },
   "bbb_720p.mov": {
    "w": 1280,
    "h": 720,
    "fps": 25.0,
    "sec": 5.1,
    "bitrate_kbps": 3926,
    "bytes": 2501691
   },
   "jellyfish_720p.mp4": {
    "w": 1280,
    "h": 720,
    "fps": 29.97,
    "sec": 7.07,
    "bitrate_kbps": 1694,
    "bytes": 1497515
   },
   "sintel_1080p.mp4": {
    "w": 1920,
    "h": 1080,
    "fps": 24.0,
    "sec": 5.85,
    "bitrate_kbps": 2253,
    "bytes": 1646229
   },
   "sintel_480p.mp4": {
    "w": 854,
    "h": 480,
    "fps": 24.0,
    "sec": 5.85,
    "bitrate_kbps": 543,
    "bytes": 396897
   },
   "sintel_720p.mp4": {
    "w": 1280,
    "h": 720,
    "fps": 24.0,
    "sec": 5.85,
    "bitrate_kbps": 1046,
    "bytes": 764586
   }
  }
 },
 "method": "라이브 페이지를 Chromium 으로 열어 파일을 실제로 넣고 결과 blob 을 받아 쟀다. 인코더는 툴이 쓰는 것 그대로다(canvas toBlob 또는 ffmpeg.wasm). 로컬 ffmpeg 는 디코더·SSIM 측정에만 썼다.",
 "runs": [
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   "setting": "High quality dithering (default)",
   "params": {
    "fps": 12,
    "width": 480,
    "dither": "sierra2_4a"
   },
   "n": 7,
   "failed": 0,
   "median_ratio_pct": 71.1,
   "mean_ratio_pct": 49.4,
   "median_ssim": 0.9893,
   "min_ssim": 0.9134,
   "median_sec": 1.65,
   "rows": [
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     "ratio": 0.889630674318076,
     "ssim": 0.9893,
     "sec": 2.92,
     "clip": {
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      "start": 0
     }
    },
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     "out": 441631,
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     "ssim": 0.9875,
     "sec": 1.37,
     "clip": {
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      "start": 0
     }
    },
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     "ssim": 0.9872,
     "sec": 1.65,
     "clip": {
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      "start": 0
     }
    },
    {
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     "sec": 9.86,
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    },
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    },
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   ]
  },
  {
   "setting": "“Smaller size” dithering",
   "params": {
    "fps": 12,
    "width": 480,
    "dither": "bayer"
   },
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   "failed": 0,
   "median_ratio_pct": 81.2,
   "mean_ratio_pct": 50.0,
   "median_ssim": 0.9466,
   "min_ssim": 0.8789,
   "median_sec": 1.22,
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  {
   "setting": "No dithering",
   "params": {
    "fps": 12,
    "width": 480,
    "dither": "none"
   },
   "n": 7,
   "failed": 0,
   "median_ratio_pct": 83.6,
   "mean_ratio_pct": 57.0,
   "median_ssim": 0.9932,
   "min_ssim": 0.9192,
   "median_sec": 1.01,
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  }
 ]
}