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        "publishedAt": "2023-12-30T00:00:00.000Z"
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          "title": "Original Codec Wiki article",
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          "depth": 2,
          "text": "Samples",
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          "depth": 2,
          "text": "Presets comparisons (-1 -> 13)",
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          "depth": 3,
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          "depth": 2,
          "text": "Tunes comparisons",
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          "depth": 3,
          "text": "TLDR",
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          "depth": 2,
          "text": "Parameters comparisons",
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          "depth": 3,
          "text": "--tile-rows 1 --tile-columns 1 vs default --tile-rows 0 --tile-columns 0",
          "anchor": "--tile-rows-1---tile-columns-1-vs-default---tile-rows-0---tile-columns-0"
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          "text": "--lookahead 60 vs default --lookahead -1 (auto)",
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          "text": "--lookahead 120 (max) vs default --lookahead -1 (auto)",
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          "depth": 3,
          "text": "--enable-overlays 1 vs default --enable-overlays 0",
          "anchor": "--enable-overlays-1-vs-default---enable-overlays-0"
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          "text": "--enable-qm 1 vs default --enable-qm 0",
          "anchor": "--enable-qm-1-vs-default---enable-qm-0"
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          "text": "--enable-qm 1 --qm-min 0 vs --enable-qm 1",
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          "text": "superres:",
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          "text": "Quality Target & Encoding Settings",
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          "text": "preset 2: v2.0.0 -> v3.0.x",
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          "text": "preset 3: v2.0.0 -> v3.0.x",
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        {
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          "text": "preset 4: v2.0.0 -> v3.0.x",
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          "text": "preset 5: v2.0.0 -> v3.0.x",
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          "text": "preset 6: v2.0.0 -> v3.0.x",
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      "id": "articles/svt-av1-fourth-deep-dive-p2",
      "collection": "articles",
      "title": "Deep Dive into SVT-AV1's Evolution (Part 2): Encoder Parameters Revisited",
      "description": "Let's discover some new (and revisit some old) SVT-AV1 parameters!",
      "canonicalUrl": "https://encode.wiki/articles/svt-av1-fourth-deep-dive-p2/",
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      "markdownUrl": "https://encode.wiki/api/v1/markdown/articles/svt-av1-fourth-deep-dive-p2.md",
      "status": "needs-review",
      "tags": [
        "video",
        "compression",
        "benchmarks",
        "migrated"
      ],
      "license": "CC BY-SA 4.0",
      "dates": {
        "publishedAt": "2025-07-02T00:00:00.000Z"
      },
      "authors": [
        "trix"
      ],
      "sources": [
        {
          "title": "Original Codec Wiki article",
          "url": "https://github.com/av1-community-contributors/codec-wiki/blob/37c3317fd058b23c71a87679bed5619a98f77752/blog/2025-07-02-svt-av1-deep-dive4-p2-v3-0-x.mdx"
        }
      ],
      "provenance": {
        "originUrl": "https://github.com/av1-community-contributors/codec-wiki/blob/37c3317fd058b23c71a87679bed5619a98f77752/blog/2025-07-02-svt-av1-deep-dive4-p2-v3-0-x.mdx",
        "originCommit": "37c3317fd058b23c71a87679bed5619a98f77752",
        "migratedAt": "2026-08-21T00:00:00.000Z",
        "modified": true,
        "originPath": "blog/2025-07-02-svt-av1-deep-dive4-p2-v3-0-x.mdx"
      },
      "headings": [
        {
          "depth": 1,
          "text": "Introduction",
          "anchor": "introduction"
        },
        {
          "depth": 2,
          "text": "SVT-AV1 v3.0.x Parameters Revisited",
          "anchor": "svt-av1-v30x-parameters-revisited"
        },
        {
          "depth": 3,
          "text": "Variance Boost",
          "anchor": "variance-boost"
        },
        {
          "depth": 4,
          "text": "Varboost Strength",
          "anchor": "varboost-strength"
        },
        {
          "depth": 5,
          "text": "...starting with --variance-boost-strength 1!",
          "anchor": "starting-with---variance-boost-strength-1"
        },
        {
          "depth": 5,
          "text": "Let's continue with --variance-boost-strength 2, the default strength value in every iteration of SVT-AV1:",
          "anchor": "lets-continue-with---variance-boost-strength-2-the-default-strength-value-in-every-iteration-of-svt-av1"
        },
        {
          "depth": 5,
          "text": "Now for --variance-boost-strength 3:",
          "anchor": "now-for---variance-boost-strength-3"
        },
        {
          "depth": 5,
          "text": "And lastly, --variance-boost-strength 4, which will print you a warning that this may be too aggressive in some usecases:",
          "anchor": "and-lastly---variance-boost-strength-4-which-will-print-you-a-warning-that-this-may-be-too-aggressive-in-some-usecases"
        },
        {
          "depth": 4,
          "text": "Varboost Octile",
          "anchor": "varboost-octile"
        },
        {
          "depth": 5,
          "text": "...starting with --variance-octile 1!",
          "anchor": "starting-with---variance-octile-1"
        },
        {
          "depth": 5,
          "text": "Let's look at --variance-octile 2:",
          "anchor": "lets-look-at---variance-octile-2"
        },
        {
          "depth": 5,
          "text": "Let's test --variance-octile 3:",
          "anchor": "lets-test---variance-octile-3"
        },
        {
          "depth": 5,
          "text": "And --variance-octile 4:",
          "anchor": "and---variance-octile-4"
        },
        {
          "depth": 5,
          "text": "And --variance-octile 5!",
          "anchor": "and---variance-octile-5"
        },
        {
          "depth": 5,
          "text": "What about --variance-octile 6, the default octile value in every iteration of SVT-AV1:",
          "anchor": "what-about---variance-octile-6-the-default-octile-value-in-every-iteration-of-svt-av1"
        },
        {
          "depth": 5,
          "text": "Following with --variance-octile 7 tests:",
          "anchor": "following-with---variance-octile-7-tests"
        },
        {
          "depth": 5,
          "text": "And lastly --variance-octile 8 testing:",
          "anchor": "and-lastly---variance-octile-8-testing"
        },
        {
          "depth": 4,
          "text": "Varboost Curve",
          "anchor": "varboost-curve"
        },
        {
          "depth": 5,
          "text": "...with the default settings first:",
          "anchor": "with-the-default-settings-first"
        },
        {
          "depth": 5,
          "text": "I also conducted the tests with a different combination of varboost settings I have used on occasion:",
          "anchor": "i-also-conducted-the-tests-with-a-different-combination-of-varboost-settings-i-have-used-on-occasion"
        },
        {
          "depth": 4,
          "text": "Varboost Conclusion",
          "anchor": "varboost-conclusion"
        },
        {
          "depth": 3,
          "text": "--tune",
          "anchor": "--tune"
        },
        {
          "depth": 3,
          "text": "--luminance-qp-bias",
          "anchor": "--luminance-qp-bias"
        },
        {
          "depth": 3,
          "text": "--sharpness",
          "anchor": "--sharpness"
        },
        {
          "depth": 3,
          "text": "--tf-strength",
          "anchor": "--tf-strength"
        },
        {
          "depth": 3,
          "text": "--lossless",
          "anchor": "--lossless"
        },
        {
          "depth": 3,
          "text": "--fast-decode",
          "anchor": "--fast-decode"
        },
        {
          "depth": 4,
          "text": "Preset 2",
          "anchor": "preset-2"
        },
        {
          "depth": 4,
          "text": "Preset 4",
          "anchor": "preset-4"
        },
        {
          "depth": 4,
          "text": "Preset 6",
          "anchor": "preset-6"
        },
        {
          "depth": 4,
          "text": "Fast Decode Conclusion",
          "anchor": "fast-decode-conclusion"
        },
        {
          "depth": 3,
          "text": "Tiles",
          "anchor": "tiles"
        },
        {
          "depth": 2,
          "text": "Statistics",
          "anchor": "statistics"
        },
        {
          "depth": 2,
          "text": "Conclusion",
          "anchor": "conclusion"
        },
        {
          "depth": 2,
          "text": "Future",
          "anchor": "future"
        }
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