在HTML5中设置视频高度 [英] Set Video height in HTML5

问题描述

这可能是一个简单的问题，但这确实使我发疯. 我只想设置HTML5视频的高度和宽度.

May be its a simple question but it's really driving me crazy. I just want to set the height and width of the HTML5 video.

我正在使用以下代码:

 <video controls="controls" width="1000" id="video">
            <source src="sintel-trailer.ogv" type='video/ogg; codecs="theora, vorbis"'>
            <source src="sintel-trailer.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
  </video>

结果:

如果我添加身高属性

<video controls="controls" width="1000" height="300" id="video">
                <source src="sintel-trailer.ogv" type='video/ogg; codecs="theora, vorbis"'>
                <source src="sintel-trailer.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
 </video>

结果:

那么我在这里错过了什么吗?

So am I missing something here?

谁能纠正我正在做的错误.

Can anyone correct the mistake I'm doing.

推荐答案

您不能在<video>标签中更改长宽比.

You can't change aspect ratio in <video> tag.

但是，您可以阅读视频内容并将其写入<canvas>元素.

However you can read your video content and write it to <canvas> element.

例如:

<canvas id="canvas" height="768" width="1024"></canvas>

和JS:

function updateVideo( ) {
    var canvas = document.getElementById( 'canvas' );
    var ctx = canvas.getContext( '2d' );
    var myVideo = document.getElementById( 'video' );
    ctx.drawImage( myVideo, 0, 0, 640, 480 );
}
setInterval ( updateVideo, 24 );

这篇关于在HTML5中设置视频高度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！