uneven_frame_duration_video.html

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<!DOCTYPE HTML>

<html class="reftest-wait">

<!--Tests the fix for bug 1576990. We want to make sure the frames do not

    become stuck due to decoders (in particular the Windows decoder) estimating

    frame durations incorrectly.

-->

<head>

<script type="text/javascript">

function doTest() {

  var video = document.getElementById("v1");

  // Video from bug 1576990.

  video.src = "uneven_frame_durations.mp4";

  video.preload = "metadata";

  // This frame differs depending on if the Windows' decoder is estimating

  // frame duration or if we use Gecko durations.

  video.currentTime = 3.8;

  video.addEventListener("seeked", function() {

    // Since our media pipeline sends the frame to imageBridge, then fires

    // a seeked event, the target frame may not be shown on the screen.

    // So using canvas to access the target frame in the imageContainer in

    // videoElement.

    var canvas = document.getElementById("canvas");

    canvas.width = video.videoWidth;

    canvas.height = video.videoHeight;

    var ctx = canvas.getContext("2d");

    ctx.drawImage(video, 0, 0, video.videoWidth, video.videoHeight);

    document.documentElement.removeAttribute("class");

});

window.addEventListener("MozReftestInvalidate", doTest);

</script>

</head>

<body>

<video id="v1" style="position:absolute; left:0; top:0"></video>

<canvas id="canvas" style="position:absolute; left:0; top:0"></video>

</body>

</html>