MediaStream：getTracks() 方法

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2017.

We'd love to hear more about your role and the company you work for
Please help us by answering a few questions.

MediaStream 接口的 getTracks() 方法返回一个包含当前媒体流的轨道集合中所有 MediaStreamTrack 对象（不论其 MediaStreamTrack.kind 是什么）的序列。

语法

js
getTracks()

参数

无。

返回值

MediaStreamTrack 对象的数组。

示例

js
navigator.mediaDevices
  .getUserMedia({ audio: false, video: true })
  .then((mediaStream) => {
    document.querySelector("video").srcObject = mediaStream;
    // 在 5 秒后停止媒体流
    setTimeout(() => {
      const tracks = mediaStream.getTracks();
      tracks[0].stop();
    }, 5000);
  });

规范

Specification
Media Capture and Streams
# dom-mediastream-gettracks

浏览器兼容性

Report problems with this compatibility data on GitHub
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
getTracks

Tip: you can click/tap on a cell for more information.

Full support