使用flash捕獲網絡攝像頭圖像？

Question

是否有任何開源Flash實用程序，我可以嵌入網頁，並使用它來捕獲用戶網絡攝像頭圖像或短持續時間剪輯，並“POST”到我的服務器servlet？ 我不尋找流視頻，因此我不需要red5或flash服務器。 你能詳細說說......？

Answer 1

這聽起來像是Thibault Imbert的AS3 GIF動畫編碼類的一個很好的候選者。 我大約兩年前在大學的一個項目中使用它。 你可以在這里查看 。 在我看來，你將有3個步驟：

//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.';

    ?>

那應該是它。

請務必查看Thibault Imbert的AS3 GIF動畫編碼類和這個Web-Cam-Stop-Motion有趣的應用程序:) Lee Felarca的SimpleFlvWriter也值得一看，具體取決於您的需求。