Encode Webcam to .mp4 or .flv using flash player

I need a .swf file which encode 10 seconds of webcam capture to a .mp4 or .flv file, applying 2 basic modifications of crop to make square video and resize to make is smaller. After that, upload the video file to server side script (eg. a standard multipart HTTP upload script in PHP) to be saved in server's hard disk. The core problem is to use the feature mentioned in the 4th significant features introduced in Flash Player 11: [login to view URL]