{
  "schema_version": "REFERENCE-1.0",
  "as_of": "2026-10-23",
  "item": {
    "id": "METHOD-0302",
    "kind": "METHOD",
    "title": "ffprobeで音声・動画の形式と長さを検査する",
    "last_verified": "2026-10-23",
    "currentness": "VERIFIED_AS_OF",
    "revision": 1,
    "requirements": [
      "読み取り可能な入力ファイル",
      "出力先の空き容量と書込み権限",
      "原典と導入済みversionの対応を確認し、権限のある検証用入力・別の出力先を用意する"
    ],
    "suitable_for": "変換前後のメディア仕様を比較する場面。",
    "unsuitable_for": "metadataの取得成功だけで映像や音声の品質を保証する用途。",
    "purpose": "ffprobeで音声・動画の形式と長さを検査する",
    "composition": "FFmpeg",
    "shortest_path": [
      "検証メディアと確認項目を決める",
      "formatとstream情報をJSONなどで取得する",
      "codec・時間・stream数を照合する"
    ],
    "verification": "metadataの長さと実際の再生結果を必要に応じて照合します。",
    "coverage": [
      "files/documents/PDF"
    ],
    "canonical_url": "https://enterprise-ai-dictionary.com/reference/methods/method-0302",
    "retrieval": "FULL",
    "publication": "PUBLIC_NO_ADS",
    "index": "INDEX",
    "ads": "OFF",
    "link_policy": "DIRECT"
  },
  "relations": [
    {
      "id": "REFREL-5a7f1635180b783c",
      "subject_id": "SRC-EVID-REF-0294",
      "predicate": "supports",
      "object_id": "METHOD-0302",
      "scope_note": "公開一次資料に基づく利用経路。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0294"
      ]
    },
    {
      "id": "REFREL-1d268fe5a8a6cd4e",
      "subject_id": "TOOL-0055",
      "predicate": "supports",
      "object_id": "METHOD-0302",
      "scope_note": "公開一次資料に基づく利用経路。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0294"
      ]
    },
    {
      "id": "REFREL-3eedb5fd152d5e52",
      "subject_id": "METHOD-0302",
      "predicate": "uses",
      "object_id": "TOOL-0055",
      "scope_note": "公開一次資料に基づく利用経路。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0294"
      ]
    },
    {
      "id": "REFREL-0d13f889a230a6b8",
      "subject_id": "METHOD-0302",
      "predicate": "requires",
      "object_id": "IDX-C02-063",
      "scope_note": "検証・運用上の関連概念。製品の基本定義とは区別する。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0294"
      ]
    },
    {
      "id": "REFREL-9fb073697129d3ae",
      "subject_id": "IDX-C02-063",
      "predicate": "explains",
      "object_id": "METHOD-0302",
      "scope_note": "利用結果の確認や運用上の注意点を読む経路。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0294"
      ]
    }
  ]
}