{
  "checked_at": "2026-11-06T07:06:07.931321+00:00",
  "tool_url": "https://imgmov.com/extract-last-frame-from-video",
  "browser": "isolated headless Chromium",
  "procedure": "For each original WebM, load clip A, select its Last frame button, load the same file as clip B, and read the seam verdict. This checks the existing tool; no tool code was changed.",
  "results": [
    {
      "control": "clean",
      "timestamp": "2026-11-06T07:04:23.762474+00:00",
      "selected_button": "Last frame \u2713\n3.97 s",
      "verdict": "Close to a continuous shot"
    },
    {
      "control": "one-frame-hold",
      "timestamp": "2026-11-06T07:00:43.460360+00:00",
      "selected_button": "Last frame \u2713\n4.00 s",
      "verdict": "Close to a continuous shot"
    },
    {
      "control": "two-frame-hold",
      "timestamp": "2026-11-06T07:01:18.664717+00:00",
      "selected_button": "Last frame \u2713\n4.03 s",
      "verdict": "Close to a continuous shot"
    },
    {
      "control": "ease-in-out",
      "timestamp": "2026-11-06T07:01:54.103642+00:00",
      "selected_button": "Last frame \u2713\n3.97 s",
      "verdict": "Close to a continuous shot"
    },
    {
      "control": "direction-reversal",
      "timestamp": "2026-11-06T07:02:29.807043+00:00",
      "selected_button": "Last frame \u2713\n3.97 s",
      "verdict": "Close to a continuous shot"
    },
    {
      "control": "repaired-hold",
      "timestamp": "2026-11-06T07:03:05.309331+00:00",
      "selected_button": "Last frame \u2713\n3.97 s",
      "verdict": "Close to a continuous shot"
    }
  ],
  "limitation": "Endpoint image comparison does not establish continuous motion or timing. An initial clean-control automation timeout was retried after waiting for the file input to become enabled."
}