2、还可以学习下canvas，有选择性的把视频流画到canvas上，可以或许可以减少带宽压力。
基于STRATUS +FLEX+MYSQL的简易在线随机视频聊天室的开发：
1.Flash Builder 4开发的，默认用的是Flex SDK4.0
2.开发最好用flash payer 10 debug version（可以进行调试）
3.申请一个 Stratus develper key：8b0f114ef5a20c433d5c2a33-201aeea5601b
首先使用node.js 搭建一个简易的 websocket服务器：
var cons = new Array()
var ws = require('ws').Server
var server = new ws({ port: 8888 })
server.on('connection', function (ws) {
console.log('new connection founded successfully')
cons.push(ws)
ws.on('message', function (data) {
for (var i = 0i <cons.lengthi++) {
cons[i].send(data)
}
})
ws.on('close', function () {
for (var i = 0i <cons.lengthi++) {
if (cons[i] == ws) cons.splice(i, 1)
}
})
})
console.log('websocket-server running...')
接下来为了更容易理解， 我在这分为两个页面，一个为视频者页面，另一个是观看者页面
下面代码为视频者页面：
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/htmlcharset=utf-8" />
<title></title>
<script src="jQuery_1.8.2.min.js"></script>
<script type="text/javascript">
$(function () {
var video = document.getElementById("video")
var canvas = document.getElementById("canvas"),
context = canvas.getContext("2d")
var w
if (navigator.webkitGetUserMedia) {
navigator.webkitGetUserMedia({ video: true }, function (stream) {
video.src = window.webkitURL.createObjectURL(stream)
video.play()
w = new WebSocket(url)
w.onopen = function () {
sendImg()
}
w.onmessage = function (e) {
sendImg()
}
}, function () {
console.log("video error")
})
var host = 'localhost'
var port = 8888
var url = 'ws://' + host + ':' + port + '/'
function sendImg() {
context.drawImage(video, 0, 0, 320, 320)
var imgData = canvas.toDataURL()
w.send(imgData)
}
}
})
</script>
</head>
<body>
<video id="video" width="640" height="480" style="background:#000" autoplay></video>
<canvas style="display:none" id="canvas" width="320" height="320"></canvas>
</body>
</html>
接下来是观看者页面：
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/htmlcharset=utf-8" />
<title></title>
<script src="jQuery_1.8.2.min.js"></script>
<script>
$(function () {
var host = 'localhost'
var port = 8888
var url = 'ws://' + host + ':' + port + '/'
var w = new WebSocket(url)
w.onmessage = function (e) {
$("#canvas").attr("src", e.data)
}
})
</script>
</head>
<body>
<img id="canvas" width="320" height="320" />
</body>
</html>
注：希望可以帮到你!
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