{
  "date": "2026-10-14",
  "http": {
    "started": "2026-10-14T12:32:27.622Z",
    "method": "One real HTTPS POST and full received-body video decoding; not a Chrome click, browser disk-save, phone or overwrite test.",
    "sampleUrl": "https://www.instagram.com/reel/DLHx_WNoXoY/",
    "download": {
      "status": 200,
      "elapsedSeconds": 6.287396304,
      "bytes": 11097563,
      "declaredLengthMatches": true,
      "mime": "video/mp4",
      "sha256": "6176d5994e1e907e127e18ac61bda86ae739db0caf1bfa85d44e795b7e2dcdae",
      "width": 1080,
      "height": 1920,
      "videoCodec": "VP9",
      "audioCodec": "HE-AAC",
      "audioSampleRateHz": 44100,
      "audioChannels": 2,
      "duration": "00:00:35.97",
      "fullDecodePassed": true
    }
  },
  "implementation": {
    "sourceSha256": "d0cc62d745cab37e574cb01dfef38616ad152a11265eb79a408d71bdd32510c3",
    "observedMp4Option": "--remux-video mp4",
    "recodeOptionPresent": false,
    "scope": "Local inspected source; not a remote process trace or creator-master comparison."
  },
  "localRemux": {
    "started": "2026-10-14T13:51:11.545Z",
    "finished": "2026-10-14T13:51:36.410Z",
    "method": "FFmpeg -map 0:v:0 -map 0:a:0 -c copy; encoded-stream SHA-256 before and after",
    "streamsBefore": [
      "0,v,SHA256=39b2c2884c8f2dfd589a95aaeb563bce705131934d1ac30e41531d985d6e8487",
      "1,a,SHA256=561326e77173373fb37797539969b30088a66a0a9964e567d8b983a3c833c829"
    ],
    "streamsAfter": [
      "0,v,SHA256=39b2c2884c8f2dfd589a95aaeb563bce705131934d1ac30e41531d985d6e8487",
      "1,a,SHA256=561326e77173373fb37797539969b30088a66a0a9964e567d8b983a3c833c829"
    ],
    "streamsEqual": true,
    "outputBytes": 11097570,
    "fullDecodePassed": true,
    "scope": "Local experiment on the already received HTTP sample, not another Instagram fetch or browser saving test."
  },
  "limitations": [
    "One public sample, not every Reel or a guaranteed speed.",
    "Source-master identity and source-to-response encoded streams were not measured.",
    "No Chrome disk save, phone playback or overwrite result."
  ],
  "sources": [
    "https://ffmpeg.org/ffmpeg.html#Streamcopy",
    "https://github.com/yt-dlp/yt-dlp#post-processing-options"
  ]
}