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Test Info: Warnings

<!DOCTYPE html>
<html>
<head>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
</head>
<body>
<video autoplay controls id="output"></video>
<script>
// Run captureStream() on cross-origin <video> content
async_test(function() {
const video = document.createElement('video');
video.src = location.origin.replace("//", "//www1.") + "/media/white.webm";
video.onerror = this.unreached_func("<video> error");
video.loop = true;
video.play();
const stream = video.captureStream();
assert_not_equals(stream, null, "error generating stream");
const output = document.getElementById("output");
const canvas = document.createElement("canvas");
const ctx = canvas.getContext('2d');
stream.onaddtrack = this.step_func_done(function() {
canvas.width = output.videoWidth || 320;
canvas.height = output.videoHeight || 240;
// The stream got a (number of) MediaStreamTracks added.
assert_equals(stream.getVideoTracks().length, 1, 'video tracks');
assert_equals(stream.getAudioTracks().length, 0, 'audio');
assert_true(stream.getVideoTracks()[0].muted, 'cross-origin video is muted');
ctx.drawImage(output, 0, 0, canvas.width, canvas.height);
const pixels = ctx.getImageData(0,0,canvas.width, canvas.height);
assert_equals(pixels.data[canvas.width*canvas.height*4 - 4], 0, "cross-origin content appears black");
}, "<video>.captureStream() returns muted/black stream");
}, "Capturing stream from cross-origin video");
</script>
</body>
</html>