如何在 webrtc 的画布流上添加音频流

问题描述

我想将通过 getusermedia() 获取的音频流添加到画布流中，并将其发送到远程对等方...于是抬头一看，竟然有addTrack().但是addTrack() 似乎不能正常工作.我在 Chrome 上运行.

I want to add an audio stream obtained via getusermedia () to the canvas stream and send it to the remote peer...So I looked up, and there was addTrack ().But addTrack () does not seem to work properly. I am running on chrome.

var audioTracks;
navigator.getUserMedia({ "audio": true, "video": false }, function (stream)
{
audioTracks = stream.getAudioTracks()[0];

}, function(error) { console.log(error);});

.
.
.

var sharestream = canvas2.captureStream(25); // 25 FPS
peerConn.addTrack(audioTracks,sharestream);
peerConn.addStream(sharestream);

这是我代码的一部分.怎么了?我的 webrtc 完整源代码工作正常，但它不适用于 addTrack().

It's part of my code. What's wrong?My webrtc full source code works fine, but it does not work with addTrack ().

推荐答案

于 10-29-2018 更新以将 getAudioTracks 替换为 getTracks:

Updated on 10-29-2018 to replace getAudioTracks with getTracks:

var canvasStream = canvas2d.captureStream(25); // parameter is optional

// get first audio track
// var audioTrack = audioStream.getAudioTracks()[0];
var audioTrack = audioStream.getTracks().filter(function(track) {
    return track.kind === 'audio'
})[0];

// append audio track into Canvas2D stream
canvasStream.addTrack( audioTrack );

// now canvas2D stream has both audio and video tracks
// peerConnection.addStream( canvasStream );
canvasStream.getTracks().forEach(function(track) {
   peerConnection.Track( track, canvasStream );
});

// create offer or answer descriptions
peerConnection.createOffer(hints).then(success).catch(failure);

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