是否能判断 HTML5 视频里有没有音频？

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一段没有音频的视频，怎么判断它有没有音频？

音频

html5

判断

视频

5 replies

a570295535

Aug 1, 2017

我的耳朵是出气的。。。

Tonni

Aug 1, 2017

方案： https://stackoverflow.com/a/23399773/4480674
缺点：浏览器兼容性不够好

metalbug

Aug 1, 2017

@Tonni 谢啦

metalbug

Aug 1, 2017

<!DOCTYPE html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="https://code.jquery.com/jquery-1.11.3.js"></script>
</head>
<body>
<video autoplay loop id="myVideo">
<source src="http://www.leoog.com/wp-content/uploads/2017/07/leoog_13934734.mp4" type="video/mp4">
</video>
<video autoplay loop id="myVideo">
<source src="http://www.runoob.com/try/demo_source/mov_bbb.mp4" type="video/mp4">
</video>
<script type="text/javascript">
document.getElementById("myVideo").addEventListener("loadeddata", function() {
if (typeof this.webkitAudioDecodedByteCount || this.mozHasAudio || this.audioTracks !== "undefined") {
if (this.webkitAudioDecodedByteCount > 0 || this.mozHasAudio || this.audioTracks && this.audioTracks.length)
this.after("有声");
else
this.after("没声");
}
});
</script>
</body>
</html>

@Tonni 这段 JS 可以，但是多个视频怎么写？新手求大神赐教。

metalbug

Aug 1, 2017

搞好了可以关贴了。