Increase Chrome Volume beyond 100%

Increase Chrome Volume

(function() {
    if (window["_gainNode"]) {
        window["_gainNode"].gain.value = parseFloat(prompt('Set the playback rate'));
        return;
    }
    var v = document.querySelector('video');
    var audioCtx = new AudioContext();
    var source = audioCtx.createMediaElementSource(v);
    var gainNode = audioCtx.createGain();
    gainNode.gain.value = parseFloat(prompt('Set the audio gain'));
    source.connect(gainNode);
    gainNode.connect(audioCtx.destination);
    window["_gainNode"] = gainNode;
})()