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Test Info: Warnings

  • This test gets skipped with pattern: (os == "win" && processor == "aarch64")
<title>Media test: default video size</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<a target="_blank" href="">Mozilla Bug 975978</a>
<pre id="test">
<script class="testbody" type="text/javascript">
// MP4 video with display size is difference to decode frame size.
// The display size is recorded in TrackHeaderBox 'tkhd' of this mp4 video.
var resource =
{ name:"pixel_aspect_ratio.mp4", type:"video/mp4", width:525, height:288 };
var v = document.createElement("video");
v.onloadedmetadata = function() {
is(v.videoWidth, resource.width, "Intrinsic width should match video width");
is(v.videoHeight, resource.height, "Intrinsic height should match video height");
v.addEventListener("error", function(ev) {
if (v.readyState < v.HAVE_METADATA) {
info("Video element returns with readyState " + v.readyState + " error.code " + v.error.code);
todo(false, "This platform doesn't support to retrieve MP4 metadata.");
v.src =;
v.preload = "auto";