<vb:if condition="$page['channelid'] == 344">
CODE FOR FORUM 344 (background video with CSS cover)
</vb:if>

<style>
#video-bg {
position: fixed;
right: 0;
bottom: 0;
width: auto;
min-width: 100%;
height: auto;
min-height: 100%;
z-index: -100;
background-size: cover;
}
</style>
<video autoplay loop muted id="video-bg">
<source src="https://grochtdreis.de/fuer-jsfiddle/video/sintel_trailer-480.mp4" type="video/mp4"> 
</video>

<style>
.youtube-bg {
    position: fixed;
    width: 100%;
    height: auto;
	min-height: 100%;
    overflow: hidden;
}
.youtube-bg::before {
    content: "";
    display: block;
    background: var(--primary_color);
    background: linear-gradient(45deg, var(--primary_color_alpha) 0%, var(--secondary_color_alpha) 100%);
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
}
.youtube-bg #player {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 180%; /* Adjust this between 150% and 200% */
  min-height: 180%; /* Adjust this between 150% and 200% */
  width: auto;
  height: auto;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  z-index: -1;
}
.
</style>
<div class="youtube-bg">
    <div id="player" data-id="0Icc5dPbE7E"></div>
</div>

<script>
var tag = document.createElement('script');
tag.src = 'https://www.youtube.com/iframe_api';

var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

var player;

function onYouTubeIframeAPIReady() {
    player = new YT.Player('player', {
        width: '100%',
        height: '100%',
        playerVars: {
            autoplay: 1,
            loop: 1,
            controls: 0,
            showinfo: 0,
            autohide: 1,
            modestbranding: 1,
            mute: 1,
            suggestedQuality: 'default',
            origin: 'https://www.vbyilmaz.com/'
        },
        videoId: document.getElementById('player').dataset.id,
        events: {
            'onReady': onPlayerReady,
            'onStateChange': onPlayerStateChange
        }
    });
}

function onPlayerReady(event) {
    event.target.playVideo();
    player.mute();
}

var done = false;

function onPlayerStateChange(e) {
    var id = document.getElementById('player').dataset.id;

    if (e.data === YT.PlayerState.ENDED) {
        player.loadVideoById(id);
    }
}
</script>