Youtube video as background for specific section - css

Question

I need to make a youtube video as a background for a specific section not the whole page.
So I need for section to be 390px height and 100% width.
Right now I am using this code but the problem is that the youtube iframe is 100% full width but the video itself is very small and with black sidebars.
here is the code:
<div class="video-wrapper">
<div id="player"></div>
</div>
<script>
// 2. This code loads the IFrame Player API code asynchronously.
var tag = document.createElement('script');
tag.src = "https://www.youtube.com/iframe_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
// 3. This function creates an <iframe> (and YouTube player)
// after the API code downloads.
var player;
function onYouTubeIframeAPIReady() {
player = new YT.Player('player', {
height: '390',
width: '100%',
videoId: 'EhArkyWXpO0',
events: {
'onReady': onPlayerReady,
'onStateChange': onPlayerStateChange
}
});
}
// 4. The API will call this function when the video player is ready.
function onPlayerReady(event) {
event.target.playVideo();
}
// 5. The API calls this function when the player's state changes.
// The function indicates that when playing a video (state=1),
// the player should play for six seconds and then stop.
var done = false;
function onPlayerStateChange(event) {
if (event.data == YT.PlayerState.PLAYING && !done) {
setTimeout(stopVideo, 6000);
done = true;
}
}
function stopVideo() {
player.stopVideo();
}
</script>
I am using youtube API and Im setting 100% width in javascript.
I am pretty sure I have to use css to achieve this, but no success so far...
Here is the current output
My desired output would be the wideo without black sidebars
Thanks!

Answer 1

You need to adjust the width with javascript by settings width to the width of your window or the parent node.
Set the size of the parent node to 100% and try something like:
node = document.getElementById("player");
player = new YT.Player('player', {
height: node.parentNode.offsetWidth * 9 / 16,
width: node.parentNode.offsetWidth,
videoId: 'EhArkyWXpO0',
events: {
'onReady': onPlayerReady,
'onStateChange': onPlayerStateChange
}
)
If you want to adjust the size if the window is resized, you have to add a function to window.onresize:
window.onresize = function() {
var node = document.getElementById('player');
// fetch player; may a childnode of node[id="player"]
player.setAttribute("width", node.parentNode.offsetWidth);
};