{
  "title": "Belong Waterfall video MRD",
  "author": "Mike Dickison",
  "authorUsername": "Giantflightlessbirds",
  "sourceUrl": "https://commons.wikimedia.org/wiki/File:Belong_Waterfall_video_MRD.webm",
  "sourceRevisionUrl": "https://commons.wikimedia.org/w/index.php?title=File:Belong_Waterfall_video_MRD.webm&oldid=1221515222",
  "sourceMediaUrl": "https://upload.wikimedia.org/wikipedia/commons/9/9f/Belong_Waterfall_video_MRD.webm",
  "license": "CC-BY-4.0",
  "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
  "reviewedDate": "2026-10-22",
  "sourceStatement": "The reviewed Commons file-page HTML declares Own work, Mike Dickison, and CC BY 4.0. No independent API extmetadata was used.",
  "sourceSha256": "cac28ea2eb74624b947367b9cbb4f973cd10dd4b0bfca79762059d8a3e517bde",
  "purpose": "Input samples only; not a watermark-removal or AI result.",
  "derivationCommand": [
    "ffmpeg",
    "-hide_banner",
    "-loglevel",
    "error",
    "-i",
    "original.webm",
    "-map_metadata",
    "-1",
    "-c:v",
    "libx264",
    "-preset",
    "medium",
    "-crf",
    "23",
    "-pix_fmt",
    "yuv420p",
    "-c:a",
    "aac",
    "-b:a",
    "128k",
    "-movflags",
    "+faststart",
    "-y",
    "input.mp4"
  ],
  "poster": {
    "source": "original.webm",
    "timeSeconds": 1,
    "width": 304,
    "height": 540,
    "processing": "Extracted still, resized and compressed as WebP."
  },
  "audioReview": {
    "originalMeanDb": -20.7,
    "originalPeakDb": -7.1,
    "description": "Audible natural waterfall; no speech or music claimed.",
    "derivedMeanDb": -20.9,
    "derivedPeakDb": -7.2
  },
  "media": {
    "original.webm": {
      "programs": [],
      "stream_groups": [],
      "streams": [
        {
          "codec_name": "vp9",
          "codec_type": "video",
          "width": 608,
          "height": 1080,
          "r_frame_rate": "30/1"
        },
        {
          "codec_name": "opus",
          "codec_type": "audio",
          "sample_rate": "48000",
          "channels": 2,
          "r_frame_rate": "0/0"
        }
      ],
      "format": {
        "duration": "3.654000",
        "size": "1644659"
      }
    },
    "input.mp4": {
      "programs": [],
      "stream_groups": [],
      "streams": [
        {
          "codec_name": "h264",
          "codec_type": "video",
          "width": 608,
          "height": 1080,
          "r_frame_rate": "30/1"
        },
        {
          "codec_name": "aac",
          "codec_type": "audio",
          "sample_rate": "48000",
          "channels": 2,
          "r_frame_rate": "0/0"
        }
      ],
      "format": {
        "duration": "3.654000",
        "size": "1981848"
      }
    }
  },
  "files": {
    "original.webm": {
      "bytes": 1644659,
      "sha256": "cac28ea2eb74624b947367b9cbb4f973cd10dd4b0bfca79762059d8a3e517bde"
    },
    "input.mp4": {
      "bytes": 1981848,
      "sha256": "4327399c19ce77904bbcdba5ef6a5a9190f78ccc9dce5720199bf1cb8f40b19e"
    },
    "poster.webp": {
      "bytes": 55672,
      "sha256": "4c294a5197f8521cda4848a65785e1ea783a96090a63b1501edf00d57c0f282d"
    }
  },
  "processingEngine": "ffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers",
  "sourceEvidence": {
    "kind": "Commons fixed-revision HTML file page",
    "sha256": "44a2d00f9f11d5b5f483322a4b7968e3ba0dd1085158ac96c25941f52dbb67fc"
  },
  "decodeCheck": {
    "original.webm": "Full sequential audio/video decode completed successfully.",
    "input.mp4": "Full sequential audio/video decode completed successfully."
  }
}