Html5视频背景，保持视频中心位于中心 [英] Html5 video background, keep center of video in center

问题描述

我试图让背景视频居中，无论用户拖动视频有多大。当我滚动较小时，它正在切断视频的右侧。这就是我所拥有的：

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;
}

我希望视频中心始终是页面的中心，即使双方被切断 - 如果它发生这种情况，这实际上是理想的。非常感谢任何帮助。感谢阅读！

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!

推荐答案

这里是我通常如何制作背景视频，以及我是如何为 stre.am 着陆页：

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%;
}

这篇关于Html5视频背景，保持视频中心位于中心的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！