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  "license": "CC BY 4.0",
  "slug": "video-codec",
  "type": "term",
  "name_jp": "ビデオコーデック（AV1 / AV2）",
  "name_en": "Video codecs (AV1 / AV2)",
  "aliases": [
    "AV1",
    "AV2",
    "HEVC",
    "VVC",
    "ビデオコーデック",
    "コーデック"
  ],
  "also_known_as": [],
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  "summary": "映像を圧縮・伝送するための符号化方式。配信では H.264 が普及の基盤、HEVC が高画質配信の実用線、AV1 がロイヤリティフリーの新世代として大画面・プレミアム視聴で臨界点を超えた。後継 AV2 は 2026 年 5 月 28 日に仕様 v1.0.0 を確定（AV1 比で同画質あたり約 30〜40% のビット削減（PSNR-YUV BD-rate: 29.81%、VMAF BD-rate: 33.79%、HDR 4K では 40% 超の事例あり））。コーデックの世代交代は、配信の帯域（CDN）コスト・デバイス到達・画質を左右し、DTC の収益性に効く『配信原価』の中核要素になる。",
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  "mentions_count": 2,
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    {
      "slug": "aomedia",
      "count": 1
    },
    {
      "slug": "netflix-inc",
      "count": 1
    },
    {
      "slug": "google",
      "count": 1
    },
    {
      "slug": "youtube",
      "count": 1
    },
    {
      "slug": "disney",
      "count": 1
    },
    {
      "slug": "paramount-skydance",
      "count": 1
    }
  ],
  "mentions": [
    {
      "slug": "aomedia-av2-codec-spec-finalized-royalty-free",
      "title_jp": "AOMedia、次世代コーデック AV2 の仕様を確定 — 配信大手連合が打つ「特許料ゼロ」の次の一手",
      "title_en": "AOMedia Finalizes the AV2 Codec Spec: The Streaming Giants' Royalty-Free Next Move",
      "category": "tech",
      "published_at": "2026-05-28T00:00:00.000Z",
      "url": "https://streamingbusinessreview.com/articles/aomedia-av2-codec-spec-finalized-royalty-free/"
    },
    {
      "slug": "streaming-codec-economics-av1-av2",
      "title_jp": "DTC 黒字化の裏で進む『配信原価』の最適化 — AV1 は臨界点、AV2 確定、しかし動機はコスト削減から画質・到達へ",
      "title_en": "The Delivery-Cost Engineering Behind DTC Profitability: AV1 at Critical Mass, AV2 Finalized, but the Driver Shifts From Bandwidth to Reach and Quality",
      "category": "tech",
      "published_at": "2026-05-05T00:00:00.000Z",
      "url": "https://streamingbusinessreview.com/articles/streaming-codec-economics-av1-av2/"
    }
  ],
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