Responsive Background Video

index.html

<section class="fullsize-video-bg">
	<div class="inner">
		<div>
			<h1>Responsive Background Video</h1>
      <p>with color and dot-grid overlay
		</div>
	</div>
	<div id="video-viewport">
		<video width="1920" height="1280" autoplay muted loop>
			<source src="https://storage.googleapis.com/coverr-main/mp4/Winter-Grass.mp4" type="video/mp4" />
			<source src="https://storage.googleapis.com/coverr-main/webm/Winter-Grass.webm" type="video/webm" />
		</video>
	</div>
</section>

responsive-background-video.markdown

Responsive Background Video

with color and dot-grid overlay effect (mimics background-size: cover)

A Pen by Daniel Riemer on CodePen.

License.

script.js

var min_w = 300;
var vid_w_orig;
var vid_h_orig;

$(function() {

    vid_w_orig = parseInt($('video').attr('width'));
    vid_h_orig = parseInt($('video').attr('height'));

    $(window).resize(function () { fitVideo(); });
    $(window).trigger('resize');

});

function fitVideo() {

    $('#video-viewport').width($('.fullsize-video-bg').width());
    $('#video-viewport').height($('.fullsize-video-bg').height());

    var scale_h = $('.fullsize-video-bg').width() / vid_w_orig;
    var scale_v = $('.fullsize-video-bg').height() / vid_h_orig;
    var scale = scale_h > scale_v ? scale_h : scale_v;

    if (scale * vid_w_orig < min_w) {scale = min_w / vid_w_orig;};

    $('video').width(scale * vid_w_orig);
    $('video').height(scale * vid_h_orig);

    $('#video-viewport').scrollLeft(($('video').width() - $('.fullsize-video-bg').width()) / 2);
    $('#video-viewport').scrollTop(($('video').height() - $('.fullsize-video-bg').height()) / 2);

};

scripts

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

style.css

* { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }
*:before, *:after { -webkit-box-sizing: inherit; -moz-box-sizing: inherit; box-sizing: inherit; }

html { background: #000; font: normal 1em/1.5 "Helvetica Neue", Arial, Helvetica, sans-serif; color: #fff; text-align: center; height: 100%; }
body { height: 100%; }

#video-viewport { position: absolute; top: 0; left: 0; width: 100%; height: 100%; overflow: hidden; z-index: -1; }
video { display: block; width: 100%; height: auto; }

.fullsize-video-bg { height: 100%; overflow: hidden; }

.fullsize-video-bg:before { content: ""; background: rgba(114,45,0,.35); position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; }
.fullsize-video-bg:after { content: ""; background-image: url(data:image/png;base64,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); background-size: 3px 3px; position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; }


.fullsize-video-bg .inner { display: table; width: 100%; max-width: 24em; height: 100%; margin: 0 auto; padding: 0; position: relative; z-index: 2; text-shadow: 0 1px 5px rgba(0,0,0,.5); }
.fullsize-video-bg .inner > div { text-align: center; display: table-cell; vertical-align: middle; padding: 0 2em; }


h1 { font-family: "Raleway", sans-serif; font-size: 3em; line-height: .9; font-weight: 900; letter-spacing: -.025em; text-transform: uppercase; margin-bottom: .5em; }
h1 + p { font-family: "Shadows Into Light Two", cursive; font-size: 1.5em;  }

styles

<link href="https://fonts.googleapis.com/css?family=Raleway:900|Shadows+Into+Light+Two" rel="stylesheet" />