Duplicating video Stream Actionscript 3 - actionscript-3

Question

Good Morning,
i am working on a video class, using a CRTMP Server for streaming. This works fine, but for my solution i need to duplicate the video stream (for some effects).
I googled for duplicate MovieClips and tried to duplicate the video like this.
import flash.display.*;
import flash.events.*;
import flash.net.*;
import flash.media.*;
import flash.system.*;
import flash.utils.ByteArray;
public class Main extends MovieClip
{
public var netStreamObj:NetStream;
public var nc:NetConnection;
public var vid:Video;
public var vid2:Video;
public var streamID:String;
public var videoURL:String;
public var metaListener:Object;
public function Main()
{
init_RTMP();
}
private function init_RTMP():void
{
streamID = "szene3.f4v";
videoURL = "rtmp://213.136.73.230/maya";
vid = new Video(); //typo! was "vid = new video();"
vid2 = new Video();
nc = new NetConnection();
nc.addEventListener(NetStatusEvent.NET_STATUS, onConnectionStatus);
nc.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler);
nc.client = {onBWDone: function():void
{
}};
nc.connect(videoURL);
}
private function onConnectionStatus(e:NetStatusEvent):void
{
if (e.info.code == "NetConnection.Connect.Success")
{
trace("Creating NetStream");
netStreamObj = new NetStream(nc);
metaListener = new Object();
metaListener.onMetaData = received_Meta;
netStreamObj.client = metaListener;
netStreamObj.play(streamID);
vid.attachNetStream(netStreamObj);
//vid2.attachNetStream(netStreamObj); // wont work
addChild(vid);
// addChild(vid2); // wont work either
//intervalID = setInterval(playback, 1000);
}
}
private function asyncErrorHandler(event:AsyncErrorEvent):void
{
trace("asyncErrorHandler.." + "\r");
}
private function received_Meta(data:Object):void
{
var _stageW:int = stage.stageWidth;
var _stageH:int = stage.stageHeight;
var _videoW:int;
var _videoH:int;
var _aspectH:int;
var Aspect_num:Number; //should be an "int" but that gives blank picture with sound
Aspect_num = data.width / data.height;
//Aspect ratio calculated here..
_videoW = _stageW;
_videoH = _videoW / Aspect_num;
_aspectH = (_stageH - _videoH) / 2;
vid.x = 0;
vid.y = _aspectH;
vid.width = _videoW;
vid.height = _videoH;
vid2.x = 0;
vid2.y = _aspectH ;
}
}
It should be possible to duplicate the video stream. 2 Instance of the same videoStream. What am i doing wrong ?
Thanks for help.

Answer 1

"This means that i have to double the netstream. This is not what i want."
"I tried to duplicate the video per Bitmap.clone. But i got an sandbox violation."
You can try the workaround suggested here: Netstream Play(null) Bitmapdata Workaround
I'll show a quick demo of how it can be applied to your code.
This demo code assumes your canvas is width=550 & height=400. Keep that ratio if scaling up.
package
{
import flash.display.*;
import flash.events.*;
import flash.net.*;
import flash.media.*;
import flash.system.*;
import flash.utils.ByteArray;
import flash.geom.*;
import flash.filters.ColorMatrixFilter;
public class Main extends MovieClip
{
public var netStreamObj:NetStream;
public var nc:NetConnection;
public var vid:Video;
public var streamID:String;
public var videoURL:String;
public var metaListener:Object;
public var vid1_sprite : Sprite = new Sprite();
public var vid2_sprite : Sprite = new Sprite();
public var vid2_BMP : Bitmap;
public var vid2_BMD : BitmapData;
public var colMtx:Array = new Array(); //for ColorMatrix effects
public var CMfilter:ColorMatrixFilter;
public function Main()
{
init_RTMP();
}
private function init_RTMP():void
{
streamID = "szene3.f4v";
videoURL = "rtmp://213.136.73.230/maya";
vid = new Video();
nc = new NetConnection();
nc.addEventListener(NetStatusEvent.NET_STATUS, onConnectionStatus);
nc.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler);
nc.client = { onBWDone: function():void { } };
//nc.connect(null); //for file playback
nc.connect(videoURL); //for RTMP streams
}
private function onConnectionStatus(e:NetStatusEvent):void
{
if (e.info.code == "NetConnection.Connect.Success")
{
trace("Creating NetStream");
netStreamObj = new NetStream(nc);
metaListener = new Object();
metaListener.onMetaData = received_Meta;
netStreamObj.client = metaListener;
//netStreamObj.play("vid.flv"); //if File
netStreamObj.play(streamID); //if RTMP
vid.attachNetStream(netStreamObj);
}
}
private function asyncErrorHandler(event:AsyncErrorEvent):void
{
trace("asyncErrorHandler.." + "\r");
}
private function received_Meta(data:Object):void
{
trace("Getting metadata");
var _stageW:int = stage.stageWidth;
var _stageH:int = stage.stageHeight;
var _videoW:int = data.width;
var _videoH:int = data.height;
var _aspectH:int = 0;
var Aspect_num:Number;
Aspect_num = data.width / data.height;
//Aspect ratio calculated here..
_videoW = _stageW;
_videoH = _videoW / Aspect_num;
_aspectH = (_stageH - _videoH) / 2;
trace("_videoW : " + _videoW);
trace("_videoW : " + _videoH);
trace("_aspectH : " + _aspectH);
vid.x = 0;
vid.y = 0;
vid.width = _videoW;
vid.height = _videoH;
setup_Copy(); //# Do this after video resize
}
public function setup_Copy () : void
{
vid2_BMD = new BitmapData(vid.width, vid.height, false, 0);
vid2_BMP = new Bitmap( vid2_BMD );
vid1_sprite.addChild(vid);
vid1_sprite.x = 0;
vid1_sprite.y = 0;
addChild( vid1_sprite );
vid2_sprite.addChild( vid2_BMP );
vid2_sprite.x = 0;
vid2_sprite.y = vid.height + 5;
addChild( vid2_sprite );
stage.addEventListener(Event.ENTER_FRAME, draw_Video);
}
public function draw_Video (evt:Event) : void
{
if ( netStreamObj.client.decodedFrames == netStreamObj.decodedFrames ) { return; } // Here we skip multiple readings
//# Get bitmapdata directly from container of video
if ( vid1_sprite.graphics.readGraphicsData().length > 0 )
{
vid2_BMD = GraphicsBitmapFill(vid1_sprite.graphics.readGraphicsData()[0]).bitmapData;
}
effect_BitmapData(); //# Do an effect to bitmapdata
}
public function effect_BitmapData ( ) : void
{
//# Matrix for Black & White effect
colMtx = colMtx.concat([1/3, 1/3, 1/3, 0, 0]); // red
colMtx = colMtx.concat([1/3, 1/3, 1/3, 0, 0]); // green
colMtx = colMtx.concat([1/3, 1/3, 1/3, 0, 0]); // blue
colMtx = colMtx.concat([0, 0, 0, 1, 0]); // alpha
CMfilter = new ColorMatrixFilter(colMtx);
vid2_BMP.bitmapData.applyFilter(vid2_BMD, new Rectangle(0, 0, vid.width, vid.height), new Point(0, 0), CMfilter);
}
}
}