HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>active — partial stop</title>
</head>
<body>
  <button id="run">Run demo</button>
  <pre id="out">Click Run (allow camera + mic if prompted).</pre>
  <script>
    document.getElementById("run").addEventListener("click", function () {
      var out = document.getElementById("out");
      if (!window.isSecureContext || !navigator.mediaDevices) {
        out.textContent = "Need secure context + mediaDevices.";
        return;
      }
      navigator.mediaDevices
        .getUserMedia({ audio: true, video: true })
        .then(function (stream) {
          var videoTrack = stream.getVideoTracks()[0];
          if (videoTrack) {
            videoTrack.stop();
          }
          var lines = [
            "video readyState: " + (videoTrack ? videoTrack.readyState : "none"),
            "stream.active: " + stream.active,
            "audio readyState: " + (stream.getAudioTracks()[0] && stream.getAudioTracks()[0].readyState)
          ];
          stream.getTracks().forEach(function (t) {
            t.stop();
          });
          out.textContent = lines.join("\n");
        })
        .catch(function (err) {
          out.textContent = "Error: " + err.message;
        });
    });
  </script>
</body>
</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

MediaStream.active — partial stop (Try It)