Html5 video background, keep center of video in center - css

Question

I am trying to keep a background video centered regardless of how big the user drags the video. It's currently cutting off the right side of the videos when i scroll smaller. Here's what I have:
<section id="home">
<div class="video_shader"></div>
<div class="video_contain">
<video autoplay="" loop="" poster="img/still.jpg" id="bgvid">
<source src="/realWebm.webm" type="video/webm" />
<source src="/realdeal.mp4" type="video/mp4">
<source src="/reaOg.ogv" type="video/ogg" />
</video>
</div>
</section>
.video_contain{
display: block;
position: absolute;
background-position: center center;
background-repeat: no-repeat;
background-size: cover;
top: 0;
left: 0;
right: 0;
bottom: 0;
width: 100%;
height: 100%;
}
video {
min-width: 100%;
min-height: 100%;
z-index: -100;
background-position: center;
background-size: cover;
}
#home {
width: 100vw;
height: 100vh;
display:block;
position: relative;
}
I would like the center of the video to be the center of the page always, even if the sides get cut off - that's actually ideal if it happens that way. Would appreciate any help. Thanks for reading!

Answer 1

here's how I typically do background video, and how I did it for the stre.am landing page:
.video_contain {
position: absolute;
top: -50%;
left: -50%;
width: 200%;
height: 200%;
}
video {
position: absolute;
top: 0;
bottom: 0;
right: 0;
left: 0;
margin: auto;
min-height: 50%;
min-width: 50%;
}

Answer 2

This is much shorter and worked for me.
video {
position: fixed;
right: 0;
bottom: 0;
min-width: 100%;
min-height: 100%;
transform: translateX(calc((100% - 100vw) / 2));
}

Answer 3

In my use case where I always wanted the video to cover the entire viewport (no matter if the viewport aspect ratio was bigger or lower than the videos), the above solution didn't work exactly how i intended. Instead, the following worked much better:
.video-container {
position: absolute;
top: 0;
left: 0;
width: 100vw;
height: 100vh;
}
.video-container > video {
display: block;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
z-index: 1;
}
#media screen and (max-aspect-ratio: 1920/1080) {
.video-container > video {
height: 100%;
}
}
#media screen and (min-aspect-ratio: 1920/1080) {
.video-container > video {
width: 100%;
}
}
My video was 1920x1080, and this works in IE11 (didnt test lower) and beyond.

Answer 4

.bg-video-wrap {
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
}
.bg-video-wrap > video,
.bg-video-wrap > iframe {
object-fit: cover;
object-position: center center;
width: 100%;
height: 100%;
}

Answer 5

Late to the party but I wanted to give a 2020 answer. Here's a simple solution that lets you have an HTML video both centered and responsive without being "fixed" positioned. It lets you start with a fullscreen intro and add some text right when you start scrolling. No scrollbars, no annoying things. As simple as that.
https://codepen.io/LuBre/pen/GRJVMqE?editors=1100
CSS
* {
box-sizing: border-box;
}
body, html {
margin: 0;
height: 100%;
font-Family: Arial;
}
.video-container {
display: grid;
justify-items: center;
align-items: center;
position: relative;
width: 100%;
height: 100%;
overflow: hidden;
}
.video-container video {
position: absolute;
z-index: 1;
top: 50%;
left:50%;
min-width: 100%;
min-height: 100%;
transform: translateX(-50%) translateY(-50%);
}
.video-text {
z-index: 2;
color: #fff;
text-align: center;
}
.video-container h1, .video-container h2 {
margin: 0;
font-size: 3rem;
}
.video-container h2 {
font-size: 1.4rem;
font-weight: normal;
opacity: 0.6;
}
.page-content {
line-height: 1.4rem;
padding: 2rem;
}
HTML
<div class="video-container">
<video autoplay muted loop>
<source src="https://www.w3schools.com/howto/rain.mp4" type="video/mp4">
</video>
<div class="video-text">
<h1>Catchy title</h1>
<h2>Everyone loves catchy titles</h2>
</div>
</div>
<div class="page-content">
<h1>New paragaph</h1>
Some random text goes here...

Answer 6

Use object-fit: cover;
video {
position: absolute;
right: 0;
bottom: 0;
height: 100vh;
width: 100vw;
object-fit: cover;
}

Answer 7

just center it like any other element with position absolute
.video_contain {
position: absolute;
width: auto;
min-height: 100%;
min-width: 100%;
left: 50%;
transform: translate(-50%);
}

Answer 8

This worked for me
.video_contain {
position: absolute;
z-index: -1;
top: 0px;
left: 0px;
bottom: 0px;
right: 0px;
overflow: hidden;
background-size: cover;
background-repeat: no-repeat;
background-position: 50% 50%;
background-image: none;
}
#bgvid {
margin: auto;
position: absolute;
z-index: -1;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
visibility: visible;
width: 1267px;
height: auto;
}

Answer 9

This did the trick for me, keeping the video centered all the time and not worrying about the actual dimensions of the video
.video_contain {
position: absolute;
top: 0;
left: 0;
/** could be any size **/
width: 100%;
height: 100%;
overflow: hidden;
z-index: 0;
}
video {
display: block;
min-height: 100%;
min-width: 100%;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
z-index: 1;
}

Answer 10

So I tested above solutions and couldn't find that one, so here is mine:
video {
position: fixed;
left: 50%;
top: 50%;
min-width: 100%;
min-height: 100%;
transform: translate(50%, -50%);
}