HTMLVideoElement.msZoom

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句法
值
范例
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非标
此特征是非标准的，且不在标准轨道中。不要在面向 Web 的生产站点中使用它：它不适用于每个用户。实现之间可能存在大的不兼容性，且行为将来可能改变。

msZoom is a read/write property which gets or sets whether the video frame is trimmed, on the top and bottom or left and right, to fit the video display.

This proprietary property is specific to Internet Explorer and Microsoft Edge.

句法

HTMLVideoElement.msZoom;

值

Boolean value set to true trims the video frame to the display space. Set to false the video frame uses letter box or pillarbox to display video.

If the native aspect ratio of a video frame, which is defined by the videoWidth and videoHeight attributes, does not match the aspect ratio of the 视频 tag, which is defined by the width and height attributes, the video is rendered with letterbox or pillarbox format. Letterbox and pillarbox are the black bars on either the left and right of the video or the top and bottom of the video.

当 msZoom attribute is set to true , the rendered video is trimmed to fit the dimensions of the video object. Either the top and bottom of the video is trimmed or the left and right of the video is trimmed.

For instance, if the layout space for the video tag is a 4:3 aspect ratio, but the stream coming in is in 16:9 aspect ratio, the msZoom option can be used to render the 16:9 video in 4:3 aspect ratio. The rendered video will then take up the full space of the video object.

范例

This examples gets a Video object and sets the msZoom 特性为 true。

    var myVideo = document.getElementById("videoTag1");
       myVideo.msZoom = true;
       myVideo.play();

另请参阅

元数据

最后修改： Mar 18, 2019

DOM (文档对象模型)
HTMLVideoElement
特性
1. msHorizontalMirror
2. msIsLayoutOptimalForPlayback
3. msIsStereo3D
4. msZoom
方法
继承：
DOM 相关页面

在此页

句法

值

范例

另请参阅

相关话题