Video Scaler for non 16:9 screens

var scaleToFitToggle = false;
var cooldownKey = false;
function keydownHandler(e) {
    if (e.keyCode == 67 && e.altKey && !cooldownKey) {
        if(scaleToFitToggle == false){
            console.log("[Video Resizer] Executing 'sizeToFit();'");
            sizeToFit();
            scaleToFitToggle = true;
        }else{
            console.log("[Video Resizer] Executing 'resetScale();'");
            resetScale();
            scaleToFitToggle = false;
        }
        cooldownKey = true;
        setTimeout(function(){
            cooldownKey = false;
        },500);
    }
}

if (document.addEventListener) {
    document.addEventListener('keydown', keydownHandler, false);
}

function resetScale(){
    var videoTags = document.querySelectorAll("video[scaledToFit='true']");
    for(var i in videoTags){
        var v = videoTags[i];
        if(typeof v !== "object"){continue;}
        console.log("Video tag gennemgås nu: ");
        console.log(v);
        v.style.transform = "";
    }
}

function sizeToFit(){
    var videoTags = document.querySelectorAll("video");
    for(var i in videoTags){
        var v = videoTags[i];
        if(typeof v !== "object"){continue;}
        console.log("Video tag gennemgås nu: ");
        console.log(v);
        v.style.transition =".5s";
        var videoheight = v.videoHeight;
        var screenHeight = screen.height * window.devicePixelRatio;

        var scale = 1+(1-((screenHeight / videoheight)/2));
        console.log("Scaling to: " + scale);
        v.style.transform = "scale(" + scale + ")";
        v.setAttribute("scaledToFit", "true");
    }

}