video-no-infinite-loop-playing.html

<!DOCTYPE html>
<title>Test a single frame video doesn't loop too quickly</title>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<video loop autoplay muted></video>
<script>
async_test(function(t) {
    var video = document.querySelector("video");
    var start = 0;
    var count = 0;
    video.onseeked = t.step_func(_ => {
        if (++count == 1) {
            start = performance.now();
        } else if (count == 3) {
            let dur = performance.now() - start;
            assert_greater_than_equal(dur / (count - 1), 250);
            t.done();
        }
    });
    video.src = "resources/one_frame.webm";
});
</script>

chromium/third_party/blink/web_tests/media/video-no-infinite-loop-playing.html