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<div class="video-wallpaper">
    <video autoplay loop playsinline muted poster="data:;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" >
        <source src="../video-source.mp4" type="video/mp4">

Note! The odd looking poster is a transparent gif to prevent 
the default playbutton poster on android


//  wrapper
.video-wallpaper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;        
    height: 100vh;

//  centered full screen cover video
.video-wallpaper video {
    position: relative;
    min-width: 100%;        
    min-height: 100%;
    width: auto;
    height: auto; 
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;

//  filtrers 
.grayscale video { filter: grayscale(1); }
.sepia     video { filter: sepia(1); }
.contrast  video { filter: contrast(1); }


<input type="checkbox" name="filter" id="pattern" checked /> 
<label for="pattern">Pattern</label>

<input type="radio" name="filter" id="none" /> 
<label for="none">None</label>

<input type="radio" name="filter" id="grayscale"  /> 
<label for="grayscale">Grayscale</label>

<input type="radio" name="filter" id="sepia" /> 
<label for="sepia">Sepia</label>

<input type="radio" name="filter" id="contrast" /> 
<label for="contrast">Contrast</label>

<input type="radio" name="filter" id="hue-rotate" /> 
<label for="hue-rotate">Hue rotate</label>

<input type="radio" name="filter" id="blur" /> 
<label for="blur">Blur</label>

<input type="radio" name="filter" id="tint" /> 
<label for="tint">Tint</label>

<input type="radio" name="filter" id="inkwell" /> 
<label for="inkwell">Ink well</label>

<input type="radio" name="filter" id="invert" /> 
<label for="invert">Invert</label>

<input type="radio" name="filter" id="opacity" /> 
<label for="opacity">Opacity</label>

<input type="radio" name="filter" id="brightness" /> 
<label for="brightness">Brightness</label>

<input type="radio" name="filter" id="combo" checked /> 
<label for="combo">Combo</label>

<h1 >Video wallpaper and css filters</h1>
<div class="pattern">
    <video id="wp" autoplay loop playsinline muted poster="//" >
       <source src="//" type="video/mp4">

iOS Update based on the new video politics for ios (
adding playsinline will allow the video to autoplay - if the video has no audio or is set to muted




                html { box-sizing: border-box; }
*,*:before,*:after { box-sizing: inherit; }
html { min-width: 100%; min-height: 100%;}
body {

h1 { font-size: 24px; font-weight:300; font-family: sans-serif; padding:10px 30px; color: gold; -webkit-font-smoothing: antialiased; 
    position:absolute; z-index: 1; bottom:0; right:0; background: rgba(0,0,0,0.4); }

video { 
    position: fixed;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -1;
    transform: translateX(-50%) translateY(-50%);
    //background-image: url(//;
    //background-position: center;

label { 
    padding:8px 16px; background: rgba(0,0,0,0.9); color:#fff; font:700 12px sans-serif; -webkit-font-smoothing: antialiased;  display:inline-block; cursor: pointer;
    z-index:1; position: relative;

input {position:absolute; top:-20px; }
input:checked + label { color: gold }

[id="grayscale"]:checked ~ div video { filter: grayscale(1); }
[id="sepia"]:checked ~ div video { filter: sepia(1); }
[id="contrast"]:checked ~ div video { filter: contrast(3); }
[id="saturate"]:checked ~ div video { filter: saturate(4); }
[id="hue-rotate"]:checked ~ div video { filter: hue-rotate(90deg); }
[id="blur"]:checked ~ div video { filter: blur(5px); }
[id="tint"]:checked ~ div video { filter: sepia(1) hue-rotate(200deg); }
[id="invert"]:checked ~ div video { filter: invert(.8); }
[id="opacity"]:checked ~ div video {  filter: opacity(.5); }
[id="inkwell"]:checked ~ div video { filter: grayscale(1) brightness(0.45) contrast(1.05); }
[id="brightness"]:checked ~ div video {filter: brightness(.5); }
[id="combo"]:checked ~ div video { filter: contrast(1.4) saturate(1.8) sepia(.6);}

[id="pattern"]:checked ~ div:before {
    $color: #000;
    $rotation: 45/2;    
    background-image: linear-gradient(#{$rotation}deg, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
    background-size: 4px 4px;


                document.ontouchstart = function(){ document.getElementById('wp').play(); }