Javascript Safari上的视频背景播放不正确

Safari上的视频背景播放不正确。它显示在屏幕的右下角，看起来不太好。但这在Chrome上非常有效

这是你的电话号码

以下是HTML代码：

<video autoplay  poster="" id="bgvid" loop>
  <!-- WCAG general accessibility recommendation is that media such as background video play through only once. Loop turned on for the purposes of illustration; if removed, the end of the video will fade in the same way created by pressing the "Pause" button  -->
<source src="http://devjentri.com/wp-content/uploads/2015/09/deW_vid_final_.webm" type="video/webm">
<source src="http://devjentri.com/wp-content/uploads/2015/09/deW-vid-final-.mov" type="video/mp4">
</video>

---

您需要将转换的供应商前缀版本添加到CSS规则中：

-webkit-transform: translateX(-50%) translateY(-50%);

完整规则应如下所示：

video { 
    position: fixed;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -100;
    -webkit-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
    background-size: cover;
    transition: 1s opacity;
}

---

Safari的哪个版本，在什么操作系统上？链接甚至不会为我加载Chrome。

video { 
    position: fixed;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -100;
    -webkit-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
    background-size: cover;
    transition: 1s opacity;
}