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+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 1189506</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1189506">Mozilla Bug 1189506</a>
+<p id="display"></p>
+<video id="vin"></video>
+<video id="vout"></video>
+<video id="vout_cors" crossorigin></video>
+<canvas id="cin" width="40" height="30"></canvas>
+<canvas id="cout" width="40" height="30"></canvas>
+<canvas id="cout_cors" width="40" height="30"></canvas>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+<script type="application/javascript">
+/* global vin, vout, vout_cors, cin, cout, cout_cors */
+
+/** Test for Bug 1189506 **/
+
+SimpleTest.waitForExplicitFinish();
+
+async function start() {
+  const resource = getPlayableVideo(gSmallTests).name;
+  vin.src = "http://example.org:8000/tests/dom/media/test/" + resource;
+  vin.preload = "metadata";
+
+  await new Promise(r => vin.onloadedmetadata = r);
+  vout.srcObject = vin.mozCaptureStreamUntilEnded();
+  vout_cors.srcObject = vin.mozCaptureStreamUntilEnded();
+  vin.play();
+  vout.play();
+  vout_cors.play();
+
+  await new Promise(r => vout.onended = r);
+  is(vin.ended, vout.ended, "Source media element ends first");
+
+  const ctxin = SpecialPowers.wrap(cin.getContext("2d"));
+  ctxin.drawImage(vin, 0, 0);
+
+  {
+    info("Testing that the last frame is rendered");
+    const powerCtx = SpecialPowers.wrap(cout.getContext("2d"));
+    powerCtx.drawImage(vout, 0, 0);
+    const datain = ctxin.getImageData(0, 0, cin.width, cin.height);
+    const dataout = powerCtx.getImageData(0, 0, cout.width, cout.height);
+    for (let i = 0; i < datain.data.length; i += 4) {
+      const pixelin = datain.data.slice(i, i + 4).join(',');
+      const pixelout = dataout.data.slice(i, i + 4).join(',');
+      if (pixelin != pixelout) {
+        is(pixelout, pixelin, `Pixel #${i/4} is rendered as expected`);
+        break;
+      }
+    }
+    is(datain.data.length / 4, cin.width * cin.height,
+      "Checked expected number of pixels");
+  }
+
+  {
+    info("Testing that the principal is set");
+    const ctx = cout.getContext("2d");
+    ctx.drawImage(vout, 0, 0);
+    SimpleTest.doesThrow(() => ctx.getImageData(0, 0, cout.width, cout.height),
+      "SecurityError");
+  }
+
+  {
+    info("Testing that the crossorigin attribute is ignored for MediaStreams");
+    const ctx = cout_cors.getContext("2d");
+    ctx.drawImage(vout_cors, 0, 0);
+    SimpleTest.doesThrow(
+      () => ctx.getImageData(0, 0, cout_cors.width, cout_cors.height),
+      "SecurityError");
+  }
+}
+
+(async () => {
+  try { await start(); }
+  catch(e) { ok(false, `Rejected with ${e}`); }
+  finally { SimpleTest.finish(); }
+})();
+</script>
+</pre>
+</body>
+</html>