Fullscreen background video and keep it centered

Question

I\'m trying to create a site where I have a background video playing with some HTML5. This is all working perfectly, it works just the way I want it. But I also want to keep

Answer 1

Use Css Property. object-fit: cover;

body, html {
  padding: 0;
  margin: 0;
  height: 100%;
  width: 100%;
}

video {
  height: 100%;
  width: 100%;
}

<video controls> 
  <source src=http://techslides.com/demos/sample-videos/small.webm type=video/webm> 
  <source src=http://techslides.com/demos/sample-videos/small.ogv type=video/ogg> 
  <source src=http://techslides.com/demos/sample-videos/small.mp4 type=video/mp4>
  <source src=http://techslides.com/demos/sample-videos/small.3gp type=video/3gp>
</video>

Answer 2

I would try centering the video with position absolute inside of a fixed wrapper. So for example:

Place your video inside of a fixed wrapper with 100% width and height:

#video-wrap {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}

Center the video inside of an extra large area with margin auto:

#video {
    position: absolute;
    top: -9999px;
    bottom: -9999px;
    left: -9999px;
    right: -9999px;
    margin: auto;
}

And stretch it to full size with min-width and min-height:

#video {
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
} 

---

Here the final result:

#video-wrap {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}
#video {
    position: absolute;
    top: -9999px;
    bottom: -9999px;
    left: -9999px;
    right: -9999px;
    margin: auto;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;   
}

<div id="video-wrap">
    <video id="video" loop autoplay>
        <source src="http://techslides.com/demos/sample-videos/small.mp4" type="video/mp4">
        Your browser does not support HTML5 video.
    </video>
</div>

Here also a jsfiddle.

Answer 3

This should make #video the entire size of the viewport and remain there when the user scrolls.

#video {
   position: fixed;
   top: 0;
   right: 0;
   bottom: 0;
   left: 0;
}

Answer 4

This question just have been referenced into Place video with 100% height & 100% width using css or javascript

I guess my answer for that could be the one you were looking for?

Here's the code:

header {
    position: relative;
    height: 100vh;
    z-index: 0;
}
header h1 {
    text-align: center;
    font: 3em/1.4 helvetica neue, helvetica, arial, sans-serif;
    color: #fff
}
header video {
    -webkit-transform: translateX(-50%) translateY(-50%);
    -moz-transform: translateX(-50%) translateY(-50%);
    -ms-transform: translateX(-50%) translateY(-50%);
    -o-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -100;
}

<header>
    <h1>Sample Title</h1>
	<video autoplay loop class="bg-video">
		<source src="https://d2v9y0dukr6mq2.cloudfront.net/video/preview/abstract-rainbow_wjpctkdes__PM.mp4" type="video/mp4">
	</video>
</header>

And here's a working fiddle example.

Hope it'll help someone else :)