{
  "task": "PKG-MB-02",
  "status": "doing",
  "parentCommit": "1cfd2e17f319749ba5f2e73f4c54c21d858e9d7e",
  "node": {
    "tests": 22,
    "historicalFailuresReproduced": 3,
    "scope": "19 existing contracts plus actual historical load/destroy with controlled pending performLoad and timers. Does not model full core destroy or real decode."
  },
  "browser": {
    "report": "refactor/.cache/mb02-first-results/report.json",
    "results": "refactor/.cache/mb02-first-results/results",
    "tests": 6,
    "nativePlaybackSuccesses": 4,
    "verifiedCapabilityFailures": 2,
    "skipped": 0,
    "records": [
      {
        "project": "chromium",
        "browser": "153.0.8010.12",
        "platform": "win32",
        "implementation": "published-1.2.0",
        "sha256": "7d088c0abe2f3c1e2857cb0547405ce1e5588630f28e484a64211fc675322bbd",
        "capabilities": {
          "secure": true,
          "VideoDecoder": "function",
          "AudioDecoder": "function",
          "AudioContext": "function",
          "webkitAudioContext": "undefined",
          "coreVersion": "5.4.0"
        },
        "outcome": "native-mp4-playback-observed",
        "state": {
          "events": [
            {
              "name": "waiting",
              "time": 97.90000000596046,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 98,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "waiting",
              "time": 98.09999999403954,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 98.09999999403954,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadedmetadata",
              "time": 157.80000001192093,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "durationchange",
              "time": 157.80000001192093,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "progress",
              "time": 157.90000000596046,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "loadeddata",
              "time": 171.09999999403954,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "canplay",
              "time": 171.09999999403954,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "canplaythrough",
              "time": 171.09999999403954,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "progress",
              "time": 171.09999999403954,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "play",
              "time": 256.30000001192093,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "playing",
              "time": 256.30000001192093,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "timeupdate",
              "time": 265.90000000596046,
              "currentTime": 0.010666666666666665,
              "readyState": 4
            },
            {
              "name": "timeupdate",
              "time": 531,
              "currentTime": 0.28,
              "readyState": 4
            },
            {
              "name": "pause",
              "time": 655.3000000119209,
              "currentTime": 0.4,
              "readyState": 4
            }
          ],
          "actions": [],
          "ready": true,
          "dimensions": [
            320,
            180,
            320,
            180
          ],
          "paused": true,
          "currentTime": 0.4,
          "error": null,
          "readyState": 4,
          "audioState": "running"
        },
        "scope": "Two actual published proxies with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No candidate, HLS or AV-sync acceptance."
      },
      {
        "project": "chromium",
        "browser": "153.0.8010.12",
        "platform": "win32",
        "implementation": "published-1.0.0",
        "sha256": "7331465d8c7a6575505b9d3fd45986c5d3d9cb3839b2620ad5a52c581199562b",
        "capabilities": {
          "secure": true,
          "VideoDecoder": "function",
          "AudioDecoder": "function",
          "AudioContext": "function",
          "webkitAudioContext": "undefined",
          "coreVersion": "5.4.0"
        },
        "outcome": "native-mp4-playback-observed",
        "state": {
          "events": [
            {
              "name": "waiting",
              "time": 103.19999998807907,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 103.39999997615814,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "waiting",
              "time": 103.39999997615814,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 103.39999997615814,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadedmetadata",
              "time": 167.39999997615814,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "durationchange",
              "time": 167.39999997615814,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "progress",
              "time": 167.39999997615814,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "loadeddata",
              "time": 176.39999997615814,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "loadeddata",
              "time": 176.39999997615814,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "canplay",
              "time": 176.5,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "canplaythrough",
              "time": 176.5,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "progress",
              "time": 176.5,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "play",
              "time": 260.7999999821186,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "playing",
              "time": 260.89999997615814,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "timeupdate",
              "time": 270.2999999821186,
              "currentTime": 0.010666666666666665,
              "readyState": 4
            },
            {
              "name": "timeupdate",
              "time": 536,
              "currentTime": 0.2693333333333333,
              "readyState": 4
            },
            {
              "name": "pause",
              "time": 661.0999999940395,
              "currentTime": 0.4,
              "readyState": 4
            }
          ],
          "actions": [],
          "ready": true,
          "dimensions": [
            320,
            180,
            320,
            180
          ],
          "paused": true,
          "currentTime": 0.4,
          "error": null,
          "readyState": 4,
          "audioState": "running"
        },
        "scope": "Two actual published proxies with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No candidate, HLS or AV-sync acceptance."
      },
      {
        "project": "firefox",
        "browser": "155.0",
        "platform": "win32",
        "implementation": "published-1.2.0",
        "sha256": "7d088c0abe2f3c1e2857cb0547405ce1e5588630f28e484a64211fc675322bbd",
        "capabilities": {
          "secure": true,
          "VideoDecoder": "function",
          "AudioDecoder": "function",
          "AudioContext": "function",
          "webkitAudioContext": "undefined",
          "coreVersion": "5.4.0"
        },
        "outcome": "native-mp4-playback-observed",
        "state": {
          "events": [
            {
              "name": "waiting",
              "time": 408,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 408,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "waiting",
              "time": 408,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 408,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadedmetadata",
              "time": 432,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "durationchange",
              "time": 432,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "progress",
              "time": 432,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "loadeddata",
              "time": 448,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "canplay",
              "time": 449,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "canplaythrough",
              "time": 449,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "progress",
              "time": 449,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "play",
              "time": 606,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "playing",
              "time": 606,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "timeupdate",
              "time": 613,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "timeupdate",
              "time": 862,
              "currentTime": 0.2506666666666667,
              "readyState": 4
            },
            {
              "name": "pause",
              "time": 1017,
              "currentTime": 0.41066666666666674,
              "readyState": 4
            }
          ],
          "actions": [],
          "ready": true,
          "dimensions": [
            320,
            180,
            320,
            180
          ],
          "paused": true,
          "currentTime": 0.41066666666666674,
          "error": null,
          "readyState": 4,
          "audioState": "running"
        },
        "scope": "Two actual published proxies with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No candidate, HLS or AV-sync acceptance."
      },
      {
        "project": "firefox",
        "browser": "155.0",
        "platform": "win32",
        "implementation": "published-1.0.0",
        "sha256": "7331465d8c7a6575505b9d3fd45986c5d3d9cb3839b2620ad5a52c581199562b",
        "capabilities": {
          "secure": true,
          "VideoDecoder": "function",
          "AudioDecoder": "function",
          "AudioContext": "function",
          "webkitAudioContext": "undefined",
          "coreVersion": "5.4.0"
        },
        "outcome": "native-mp4-playback-observed",
        "state": {
          "events": [
            {
              "name": "waiting",
              "time": 339,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 339,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "waiting",
              "time": 339,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 339,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadedmetadata",
              "time": 369,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "durationchange",
              "time": 369,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "progress",
              "time": 369,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "loadeddata",
              "time": 384,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "loadeddata",
              "time": 385,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "canplay",
              "time": 385,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "canplaythrough",
              "time": 385,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "progress",
              "time": 385,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "play",
              "time": 535,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "playing",
              "time": 535,
              "currentTime": 0,
              "readyState": 4
            },
            {
              "name": "timeupdate",
              "time": 542,
              "currentTime": 0.010666666666666658,
              "readyState": 4
            },
            {
              "name": "timeupdate",
              "time": 808,
              "currentTime": 0.28,
              "readyState": 4
            },
            {
              "name": "pause",
              "time": 937,
              "currentTime": 0.41066666666666674,
              "readyState": 4
            }
          ],
          "actions": [],
          "ready": true,
          "dimensions": [
            320,
            180,
            320,
            180
          ],
          "paused": true,
          "currentTime": 0.41066666666666674,
          "error": null,
          "readyState": 4,
          "audioState": "running"
        },
        "scope": "Two actual published proxies with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No candidate, HLS or AV-sync acceptance."
      },
      {
        "project": "webkit",
        "browser": "26.6",
        "platform": "win32",
        "implementation": "published-1.2.0",
        "sha256": "7d088c0abe2f3c1e2857cb0547405ce1e5588630f28e484a64211fc675322bbd",
        "capabilities": {
          "secure": true,
          "VideoDecoder": "undefined",
          "AudioDecoder": "undefined",
          "AudioContext": "undefined",
          "webkitAudioContext": "undefined",
          "coreVersion": "5.4.0"
        },
        "outcome": "verified-unsupported-capability-control",
        "state": {
          "events": [
            {
              "name": "waiting",
              "time": 158,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 158,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "waiting",
              "time": 165,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 165,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "error",
              "time": 229,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadedmetadata",
              "time": 232,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "durationchange",
              "time": 232,
              "currentTime": 0,
              "readyState": 1
            },
            {
              "name": "progress",
              "time": 232,
              "currentTime": 0,
              "readyState": 1
            }
          ],
          "actions": [],
          "ready": false,
          "dimensions": [
            0,
            0,
            0,
            0
          ],
          "paused": true,
          "currentTime": 0,
          "error": {
            "code": 4,
            "message": "undefined is not a constructor (evaluating 'new t')"
          },
          "readyState": 1
        },
        "scope": "Two actual published proxies with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No candidate, HLS or AV-sync acceptance."
      },
      {
        "project": "webkit",
        "browser": "26.6",
        "platform": "win32",
        "implementation": "published-1.0.0",
        "sha256": "7331465d8c7a6575505b9d3fd45986c5d3d9cb3839b2620ad5a52c581199562b",
        "capabilities": {
          "secure": true,
          "VideoDecoder": "undefined",
          "AudioDecoder": "undefined",
          "AudioContext": "undefined",
          "webkitAudioContext": "undefined",
          "coreVersion": "5.4.0"
        },
        "outcome": "verified-unsupported-capability-control",
        "state": {
          "events": [
            {
              "name": "waiting",
              "time": 149,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 149,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "waiting",
              "time": 151,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "loadstart",
              "time": 151,
              "currentTime": 0,
              "readyState": 0
            },
            {
              "name": "error",
              "time": 200,
              "currentTime": 0,
              "readyState": 0
            }
          ],
          "actions": [],
          "ready": false,
          "dimensions": [
            0,
            0,
            0,
            0
          ],
          "paused": true,
          "currentTime": 0,
          "error": {
            "code": 4,
            "message": "undefined is not a constructor (evaluating 'new t')"
          },
          "readyState": 0
        },
        "scope": "Two actual published proxies with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No candidate, HLS or AV-sync acceptance."
      }
    ]
  },
  "fixtureSha256": {
    "test/browser/mediabunny.spec.js": "0d9af2fc2c47a9a78953e8c1fd69148ba553dc3b5e3f5ff0c141f537597ae9fe",
    "test/mediabunny.test.js": "bc740a32d88cfb1291785d6ba20737d1e53276e9d43a3fc99ecc5423e5fa6a77",
    "test/helpers/mediabunny.js": "3e25bd5274d58be4d0bb85cd5fb2a825848cae1bfdbfaf5c91177a0c2b03a87a"
  },
  "limitations": [
    "No full CI rerun claimed for this checkpoint; MB-01 CI evidence belongs to its preceding completion commit.",
    "WebM/HLS/Blob/Stream, seek and exact readiness/AV-sync/cleanup coverage still pending.",
    "Windows WebKit missing APIs is an explicit negative control, not successful playback or a general Safari support verdict.",
    "Candidate code has not yet been migrated or fixed."
  ]
}