如何在 WebRTC 视频聊天中添加音频/视频静音/取消静音按钮

Question

我正在尝试创建 WebRTC 视频聊天。现在，我正忙于创建媒体轨道按钮（静音视频以启用或禁用视频发送，以及静音音频以与音频相同）。这是我的代码。

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
  <script type="text/javascript" src="http://cdn.peerjs.com/0.3/peer.min.js"></script>
  <script>
  navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;

  var myStream;
  var peer = new Peer({key: 'PeerJS key'});
  var setOthersStream = function(stream){
    $('#others-video').prop('src', URL.createObjectURL(stream));
  };

  var setMyStream = function(stream){
    myStream = stream;
    $('#video').prop('src', URL.createObjectURL(stream));

  };

  peer.on('open', function(id){
    $('#peer-id').text(id);
  });

  peer.on('call', function(call){
    call.answer(myStream);
    call.on('stream', setOthersStream);
  });

  $(function(){
    navigator.getUserMedia({audio: true, video: true}, setMyStream, function(){});

    $('#call').on('click', function(){
      var call = peer.call($('#others-peer-id').val(), myStream);
      call.on('stream', setOthersStream);
    });
  });

  peer.on('error', function(e){
    console.log(e.message);
  });

有人可以指导我吗？

Answer 1

流中的视频和音频轨道有一个enabled 属性，您可以对其进行修改。例如：

function muteMic() {
  myStream.getAudioTracks().forEach(track => track.enabled = !track.enabled);
}

function muteCam() {
  myStream.getVideoTracks().forEach(track => track.enabled = !track.enabled);
}

Answer 2

终于搞定了！ 这个“webrtc video stream stop sharing”的问题的第一个答案引导我走向正确的方向。 我创建了两个新函数来静音视频和音频，并将它们绑定到 html 文件中的适当按钮。 最后变成了这个样子：

navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;

var myStream;
var peer = new Peer({key: 'PeerJS key'});

var setOthersStream = function(stream){
  $('#others-video').prop('src', URL.createObjectURL(stream));
};

var setMyStream = function(stream){
  myStream = stream;
  $('#video').prop('src', URL.createObjectURL(stream));
};

peer.on('open', function(id){
  $('#peer-id').text(id);
});

peer.on('call', function(call){
  call.answer(myStream);
  call.on('stream', setOthersStream);
});

$(function(){
  navigator.getUserMedia({audio: true, video: true}, setMyStream, function(){});
  $('#call').on('click', function(){
    var call = peer.call($('#others-peer-id').val(), myStream);
    call.on('stream', setOthersStream);
  });
});

peer.on('error', function(e){
  console.log(e.message);
});

//create button to toggle video
var video_button = document.createElement("video_button");
video_button.appendChild(document.createTextNode("Toggle hold"));

video_button.video_onclick = function(){
  myStream.getVideoTracks()[0].enabled = !(myStream.getVideoTracks()[0].enabled);
}

var audio_button = document.createElement("audio_button");
video_button.appendChild(document.createTextNode("Toggle hold"));

audio_button.audio_onclick = function(){
  myStream.getAudioTracks()[0].enabled = !(myStream.getAudioTracks()[0].enabled);
}

希望对某人有所帮助。

Answer 3

使用MediaStreamTrack.enabled。

let mic_switch = true;
let video_switch = true;

function toggleVideo() {
  if(localStream != null && localStream.getVideoTracks().length > 0){
    video_switch = !video_switch;

    localStream.getVideoTracks()[0].enabled = video_switch;
  }

}

function toggleMic() {
  if(localStream != null && localStream.getAudioTracks().length > 0){
    mic_switch = !mic_switch;

    localStream.getAudioTracks()[0].enabled = mic_switch;
  }     

远程流也一样。