Set Video height in HTML5

问题

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.

I am using this code:

 <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>

Result:

If I add height attribute

<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>

Result:

So am I missing something here?

Can anyone correct the mistake I'm doing.

回答1:

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

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

For example:

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

And 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 );

回答2:

Here is simple CSS trick, you don't need to add any JavaScript or jQuery code. Use object-fit CSS property on video tag.

HTML

<video controls="controls" 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>

CSS

#video{
  object-fit: initial;
  width: 400px;
  height: 300px;
}

See Fiddle

回答3:

You can use css to work around.

#video {
   width:1000px;
   height:auto;
}

来源：https://stackoverflow.com/questions/10011389/set-video-height-in-html5