[javascript] 使用javascript实现webrtc视频聊天demo
作者:互联网
自己的ID是自动获取的 ,然后输入对方的ID , 对方的ID可以这样获取 , 再打开新的浏览器或者手机也可以
原理是 利用js的h5新特性获取摄像头视频流, 通过peerjs的服务交换双方的信息 , 然后使用浏览器的webrtc特性进行点对点通信 , 这个时候是不需要中间服务器的
代码如下:
<html> <head> <title>视频聊天</title> <meta charset="utf-8"> <script src="https://cdn.jsdelivr.net/npm/jquery/dist/jquery.min.js"></script> <script src="https://cdn.bootcdn.net/ajax/libs/peerjs/1.3.1/peerjs.min.js"></script> </head> <body> <h3>本地视频</h3> <video id="localVideo" style="width: 400px;height: 300px;"></video> <div style="text-align: left"> 自己ID<input type="text" id="myPeerid"/>(自动获取) 对方ID<input type="text" id="youPeerid"/>(请手动输入) <button id="callBtn">聊天</button> </div> <h3>远程视频</h3> <video id="remoteVideo" style="width: 400px;height: 300px;"></video> <script type="text/javascript"> //访问用户媒体设备的兼容方法 function getUserMedia(constrains,success,error){ if(navigator.mediaDevices.getUserMedia){ //最新标准API navigator.mediaDevices.getUserMedia(constrains).then(success).catch(error); } else if (navigator.webkitGetUserMedia){ //webkit内核浏览器 navigator.webkitGetUserMedia(constrains).then(success).catch(error); } else if (navigator.mozGetUserMedia){ //Firefox浏览器 navagator.mozGetUserMedia(constrains).then(success).catch(error); } else if (navigator.getUserMedia){ //旧版API navigator.getUserMedia(constrains).then(success).catch(error); } } var localVideo = document.querySelector('video#localVideo'); var remoteVideo = document.querySelector('video#remoteVideo'); var localStream=null; $(function(){ getUserMedia({video: true, audio: true}, function(stream) { localStream=stream; localVideo.srcObject = stream; localVideo.autoplay = true; localVideo.play(); }, function(err) { console.log('Failed to get local stream' ,err); }); var peer = new Peer(); peer.on('open', function(id) { $("#myPeerid").val(id); }); peer.on('call', function(call) { call.answer(localStream); call.on('stream', function(remoteStream) { console.log(remoteStream); remoteVideo.srcObject = remoteStream; remoteVideo.autoplay = true; }); }); $('#callBtn').click(function(){ var remoteId=$("#youPeerid").val(); if(remoteId==""){ alert("请输入对方ID");return; } var call = peer.call(remoteId,localStream); call.on('stream', function(remoteStream) { console.log(remoteStream); remoteVideo.srcObject = remoteStream; remoteVideo.autoplay = true; }); call.on('close', function() { console.log("call close"); _this.loading.close(); }); call.on('error', function(err) { console.log(err); _this.loading.close(); }); }); }); </script> </body> </html>
标签:function,demo,javascript,call,getUserMedia,var,navigator,remoteVideo,webrtc 来源: https://blog.51cto.com/u_15274085/2918188