我需要为我的Ruby on Rails应用程序构建一个视频会议功能。我找到了一个关于HTML5的教程,它可以通过浏览器访问你的摄像头。一旦摄像头开启,你就可以看到实时视频流并拍照。以下是代码:
Javascrip代码:
// Put event listeners into place
window.addEventListener("DOMContentLoaded", function() {
// Grab elements, create settings, etc.
var canvas = document.getElementById("canvas"),
context = canvas.getContext("2d"),
video = document.getElementById("video"),
videoObj = { "video": true },
errBack = function(error) {
console.log("Video capture error: ", error.code);
};
// Put video listeners into place
if(navigator.getUserMedia) { // Standard
navigator.getUserMedia(videoObj, function(stream) {
video.src = stream;
video.play();
}, errBack);
} else if(navigator.webkitGetUserMedia) { // WebKit-prefixed
navigator.webkitGetUserMedia(videoObj, function(stream){
video.src = window.webkitURL.createObjectURL(stream);
video.play();
}, errBack);
}
else if(navigator.mozGetUserMedia) { // Firefox-prefixed
navigator.mozGetUserMedia(videoObj, function(stream){
video.src = window.URL.createObjectURL(stream);
video.play();
}, errBack);
}
// Trigger photo take
document.getElementById("snap").addEventListener("click", function(e) {
context.drawImage(video, 0, 0, 640, 480);
});
}, false);
HTML代码:
<h1>New video</h1>
<!--<%= render 'form' %>-->
<video id="video" width="640" height="480" autoplay></video>
<button id="snap">Snap Photo</button>
<canvas id="canvas" width="640" height="480"></canvas>
<div class="actions">
我需要一种方法将我在服务器内看到的现场视频流传输给另一个用户。我该怎么做? WebSocket 能够实现这一点吗?如果可以,具体如何实现?