如何在 WebRTC 視頻聊天中添加音頻/視頻靜音/取消靜音按鈕

Question

我正在嘗試創建 WebRTC 視頻聊天。 現在我忙於創建媒體軌道按鈕（靜音視頻以啟用或禁用視頻發送，靜音音頻以與音頻相同）。 這是我的代碼。

<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);
  });

誰能指導我嗎？

Answer 1

流中的視頻和音頻軌道具有可以修改的已enabled屬性。 例如：

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

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

Answer 2

終於我得到它的工作！ 這個“ webrtc video stream stop sharing ”問題的第一個答案引導我走向了正確的方向。 我創建了兩個新函數來使視頻和音頻靜音，並將它們綁定到 html 文件中的適當按鈕。 最后它變成了這個樣子：

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);
}

希望它會對某人有所幫助。

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;
  }     

遠程流也一樣。