{
  "catalogueId": "AURORA-T049-001",
  "transmission": 49,
  "source": "Preserved continuous Transmission 049 extended aurora excerpt",
  "sourceWindow": "Approximately 11:05:25\u201311:05:55 in the original master; keyframe boundaries are approximate.",
  "video": {
    "url": "/evidence/auroras/t049-aurora-30fps-short.mp4",
    "sha256": "8807d93c4b79224f6c70afb562a2f503d1896c70cac5f52b30e6300749f211b7",
    "bytes": 11646381,
    "width": 1280,
    "height": 720,
    "fps": 30,
    "durationSeconds": 30.005,
    "encoding": "Original H.264/AAC packets copied without re-encoding"
  },
  "audio": {
    "codec": "AAC",
    "status": "Silent in preserved source",
    "measuredMeanDbFS": -91.0,
    "measuredPeakDbFS": -91.0,
    "replacementSoundAdded": false
  },
  "archiveWorkDate": "2026-11-07",
  "packetPayloadHashes": [
    "0,v,SHA256=f437dd71f1cde3b9112c7798f7740610227d8fa2bd033ab162476acdb27d9b77",
    "1,a,SHA256=3653436ba78f5e3d679693561503f2cf3742f4b557172060dfe49bfb3039e48d"
  ],
  "packetPayloadsMatchSourceSelection": true
}