使用闪光灯捕捉摄像头图像？

Question

是否有任何开源的Flash工具，我可以嵌入在网页上，并使用它来捕获用户的网络摄像头图像或短期的剪辑，并做“POST”到我的服务器servlet？我不寻找流媒体视频，所以我不需要red5或闪存服务器。你可以详细说明......吗？

Answer 1

这听起来很适合Thibault Imbert's AS3 GIF Animation Encoding Class。 我大约两年前在大学使用它进行项目。你可以看看here。 在我看来，你会有3个步骤：

//1.Create a Camera object 

//this code comes from the LiveDocs 
var camera:Camera = Camera.getCamera(); 
var video:Video;    
if (camera != null) { 
    video = new Video(camera.width * 2, camera.height * 2); 
    video.attachCamera(camera); 
    addChild(video); 
} else { 
    trace("You need a camera."); 
} 

//2. Take one or more 'screenshots' using BitmapData 

    var screenshot:BitmapData = new BitmapData(video.width,video.height,false,0x009900); 
    screenshot.draw(video); 
    //you would probably save more of these in an array called screenshots maybe 

//3. Create a GIFEncoder and send it to the server: 



//assuming screenshots is an array of BitmapData objects previously saved 
var animationEncoder:GIFEncoder = new GIFEncoder(); 
animationEncoder.setRepeat(0); 
animationEncoder.setDelay (150); 
animationEncoder.start(); 
for(var i:int = 1 ; i < screenshots.length ; i++){ 
    animationEncoder.addFrame(screenshots[i]); 
} 
animationEncoder.finish(); 
//save it on the server 
var header:URLRequestHeader = new URLRequestHeader ("Content-type", "application/octet-stream");//binary header 
var gifRequest:URLRequest = new URLRequest ('http://yourServer/writeGIF.php?name=myFile.gif&method=download'); 
gifRequest.requestHeaders.push (header); 
gifRequest.method = URLRequestMethod.POST; 
gifRequest.data = animationEncoder.stream; 
sendToURL(gifRequest); 



//Obviously you would have listeners to check if everything was ok, and when the operation //is complete. 

//The PHP code would be something simple as this 

    <?php 

    $method = $_GET['method']; 
    $name = $_GET['name']; 

    if (isset ($GLOBALS["HTTP_RAW_POST_DATA"])) { 

     // get bytearray 
     $gif = $GLOBALS["HTTP_RAW_POST_DATA"]; 

     // add headers for download dialog-box 
     header('Content-Type: image/gif'); 
     header('Content-Length: '.strlen($gif)); 
     header('Content-disposition:'.$method.'; filename="'.$name.'".gif'); 

     echo $gif ; 

    } else echo 'An error occured.'; 

    ?> 

这应该是它。

请务必检查出Thibault Imbert's AS3 GIF Animation Encoding Class这Web-Cam-Stop-Motion有趣的应用程序:) Lee Felarca's SimpleFlvWriter是值得期待的还有，根据您的需要。