what is the simpliest way to get jpg from bitmapData - actionscript-3

Question

I need to convert bitmapData grabbed from movie clip to jpeg or png. Is there some lib for that?

Answer 1

see this example in take portion that convert byte to image, i have given whole for your reference
package {
import encoding.JPGEncoder;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Loader;
import flash.display.Sprite;
import flash.utils.ByteArray;
import flash.events.Event
public class Converter extends Sprite {
[Embed(source = "image.jpg")]
private var image:Class
private const QUALITY:uint = 80;
public function Converter():void {
var bitmap:Bitmap = new image();
var bitmapData:BitmapData = bitmap.bitmapData;
//encode BitmapData to JPG
var encoder:JPGEncoder = new JPGEncoder(QUALITY);
var rawBytes:ByteArray = encoder.encode(bitmap.bitmapData);
//decode JPG ByteArray back to BitmapData
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, getBitmapData)
loader.loadBytes(rawBytes);
}
private function getBitmapData(e:Event):void {
var decodedBitmapData:BitmapData = Bitmap(e.target.content).bitmapData
trace(decodedBitmapData);
}
}
}

Answer 2

You can now use the native jpeg encoding built into Flash Player 11.3 and AIR 3.3.
var quality:int = 50;
var bounds:Rectangle = bitmapData.rect;
var result:ByteArray = bitmapData.encode(bounds, new JPEGEncoderOptions(50));
This requires -swf-version=16 be passed to the compiler.

Answer 3

This is not the simplest way, but depending on the dimensions of your image, may be worth a look. Jens Krause has compiled jpeglib with Alchemy, and it encodes much faster than as3corelib's version, or even Thibault Imbert's improved AS3 version:
http://www.websector.de/blog/2009/06/21/speed-up-jpeg-encoding-using-alchemy/