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+<!DOCTYPE html>
+<html><head>
+<meta http-equiv="content-type" content="text/html; charset=windows-1252">
+  <title>MSE: resume from waiting even after format change occurred</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript" src="mediasource.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<pre id="test"><script class="testbody" type="text/javascript">
+
+SimpleTest.waitForExplicitFinish();
+
+runWithMSE(async (ms, el) => {
+  el.controls = true;
+  await once(ms, "sourceopen");
+  ok(true, "Receive a sourceopen event");
+  const sb = ms.addSourceBuffer("video/mp4");
+  await fetchAndLoad(sb, "bipbop/bipbop_480_624kbps-video", ["init"], ".mp4");
+  await fetchAndLoad(sb, "bipbop/bipbop_480_624kbps-video", range(1, 3), ".m4s");
+  el.play();
+  // let seek to the last audio frame.
+  // The seek will complete and then playback will stall.
+  el.currentTime = 1.532517;
+  await Promise.all([once(el, "seeked"), once(el, "waiting")]);
+  info("seek completed");
+  await fetchAndLoad(sb, "bipbop/bipbop", ["init"], ".mp4");
+  await fetchAndLoad(sb, "bipbop/bipbop", range(1, 4), ".m4s");
+  ms.endOfStream();
+  await once(el, "ended");
+  SimpleTest.finish();
+});
+
+</script>
+</pre>
+</body>
+</html>