File: capture-muted.html

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<!DOCTYPE html>
<html>
<head>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
</head>
<body>
<script>

// Run captureStream() on different muted videos, and assert data is flowing.

function makeAsyncTest(filename) {
    return async function(test) {
        const video = document.createElement('video');
        video.src = "/media/" + filename;
        video.muted = true;
        video.onerror = test.unreached_func("<video> error");
        video.play();

        const stream = video.captureStream();
        await new Promise(r => stream.onaddtrack = r);
        const recorder = new MediaRecorder(stream);

        recorder.start(0);
        const {data} = await new Promise(r => recorder.ondataavailable = r);
        assert_true(data.size > 0, 'Recorded data size should be > 0');
    };
}

promise_test(makeAsyncTest("test-v-128k-320x240-24fps-8kfr.webm"), "video-only.");
promise_test(makeAsyncTest("test-a-128k-44100Hz-1ch.webm"), "audio-only");
promise_test(makeAsyncTest("test-av-384k-44100Hz-1ch-320x240-30fps-10kfr.webm"), "video+audio");

</script>
</body>
</html>