MediaStreamTrackAudioSourceOptions.mediaStreamTrack

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句法
范例
规范
浏览器兼容性
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MediaStreamTrackAudioSourceOptions dictionary's mediaStreamTrack property must contain a reference to the MediaStreamTrack from which the MediaStreamTrackAudioSourceNode being created using the MediaStreamTrackAudioSourceNode() 构造函数。

句法

mediaStreamTrackAudioSourceOptions = {
  mediaStreamTrack: audioSourceTrack;
}
mediaStreamTrackAudioSourceOptions.mediaStreamTrack = audioSourceTrack;

值

A MediaStreamTrack from which the audio output of the new MediaStreamTrackAudioSourceNode will be taken.

范例

此范例使用 getUserMedia() to obtain access to the user's camera, then creates a new MediaStreamAudioSourceNode from the first audio track provided by the device.

let audioCtx = new (window.AudioContext || window.webkitAudioContext)();
if (navigator.mediaDevices.getUserMedia) {
  navigator.mediaDevices.getUserMedia (
    {
      audio: true,
      video: false
    }).then(function(stream) {
      let options = {
        mediaStreamTrack: stream.getAudioTracks()[0];
      }
      let source = new MediaStreamTrackAudioSourceNode(audioCtx, options);
      source.connect(audioCtx.destination);
    }).catch(function(err) {
      console.log('The following gUM error occured: ' + err);
    });
} else {
  console.log('new getUserMedia not supported on your browser!');
}

规范

规范	状态	注释
Web 音频 API The definition of 'MediaStreamTrackAudioSourceOptions.mediaStream' in that specification.	工作草案

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`mediaStreamTrack`	Chrome No	Edge No	Firefox 68	IE No	Opera No	Safari No	WebView Android No	Chrome Android No	Firefox Android 68	Opera Android No	Safari iOS No	Samsung Internet Android No

图例

完整支持
不支持

元数据

最后修改： Jun 24, 2019

Web 音频 API
MediaStreamTrackAudioSourceOptions
特性
1. mediaStreamTrack
Related pages for Web Audio API

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句法

值

范例

规范

浏览器兼容性

图例

相关话题