LayoutTests/media/video-loopstart.html

<video playcount=2 loopstart=1s controls></video>
<p>Test that playing video rewinds to time specified by the loopstart attribute when it loops.</p>
<script src=video-test.js></script>
<script>
test("video.loopStart==1.0");
waitForEvent('load', function () {
    waitForEvent('timeupdate', function () {
        failTestIn(1000);
        if (video.currentLoop == 1) {
            test("video.currentLoop == 1");
            test("video.currentTime.toFixed(1) == 1.0");
            endTest();
        }
    });
    video.currentTime = video.duration - 0.2;
});
video.src = "content/test.mp4";
run("video.play()");
</script>