Msun

推荐一些Flex视频教程：

• Adobe Labs的http://labs.adobe.com/technologies/flash/videos/
• RIAMeeting对应翻译的中文版http://www.riameeting.com/riavideo

RIAMeeting里的字幕是外挂的，试着破译了一下，关键代码如下：

private function test() : void {
    var loader : URLLoader = new URLLoader();
    loader.addEventListener(Event.COMPLETE, loaderHandler);
    loader.load(new URLRequest("http://www.riameeting.com/videoxml.php?nid=36"));
}

private function loaderHandler(event : Event) : void {
    var charAscii : Number;
    var encoded : String = String(event.target.data);
    var charCount : int = encoded.length;
    var encodedPlus : String = "";
    var i : uint = 0;
    while (i < charCount) {
        charAscii = encoded.charAt(i).charCodeAt(0) - 1;
        if (charAscii < 32)
            break;
        encodedPlus += String.fromCharCode(charAscii);
        i++;
    }
    var decoder : Base64Decoder = new Base64Decoder();
    decoder.decode(encodedPlus);
    var s : String = decoder.flush().toString();
}