diff --git a/src/GameEditor.as b/src/GameEditor.as
index 125878b..b517e27 100644
--- a/src/GameEditor.as
+++ b/src/GameEditor.as
@@ -44,12 +44,12 @@ package
 		}
 		private function onDrawBegin(e: Event): void
 		{
-			videotube.stream.pause();
+			videotube.pause();
 		}
 		private function onDrawEnd(e: Event): void
 		{
-			gamedisc.AddQte(new Qte(sketchShape.rgpoint, videotube.stream.time));
-			videotube.stream.resume();
+			gamedisc.AddQte(new Qte(sketchShape.rgpoint, videotube.time()));
+			videotube.resume();
 		}
 
 	}
diff --git a/src/Gamedisc.as b/src/Gamedisc.as
index 3e29c4d..211c098 100644
--- a/src/Gamedisc.as
+++ b/src/Gamedisc.as
@@ -18,6 +18,10 @@ package
 		{
 			rgqte.splice(Math.abs(Util.binarySearch(rgqte, qte, Qte.compare)), 0, qte);
 		}
+		public function CreateVideotube():Videotube
+		{
+			return new VideotubeFlv(this);
+		}
 		public function ToJson():Object
 		{
 			var jsonRgqte:Array = [];
diff --git a/src/Main.as b/src/Main.as
index 8efaa23..bc13597 100644
--- a/src/Main.as
+++ b/src/Main.as
@@ -21,7 +21,7 @@ package
 		public function Main():void 
 		{
 			gamedisc = new Gamedisc("The Last Eichhof - Longplay.flv");
-			videotube = new Videotube(gamedisc);
+			videotube = gamedisc.CreateVideotube();
 			if (stage) init();
 			else addEventListener(Event.ADDED_TO_STAGE, init);
 		}
@@ -56,7 +56,7 @@ package
 				gameplayer = new GamePlayer(videotube, gamedisc);
 				addChild(gameplayer);
 			}
-			videotube.stream.seek(0);
+			videotube.seek(0);
 		}
 		private function onKey(key:KeyboardEvent):void
 		{
diff --git a/src/Videotube.as b/src/Videotube.as
index 2ccccd1..bded925 100644
--- a/src/Videotube.as
+++ b/src/Videotube.as
@@ -1,74 +1,19 @@
 package  
 {
 	import flash.display.Sprite;
-	import flash.events.Event;
-	import flash.media.Video;
-	import flash.net.NetConnection;
-	import flash.net.NetStream;
+	import flash.events.EventDispatcher;
+	
 	/**
 	 * ...
 	 * @author jjp
 	 */
 	public class Videotube extends Sprite
 	{
-		private var flv:Video;
-		private var gamedisc:Gamedisc;
-		public var stream:NetStream;
-		private var iqte:int;
-		private var secPrev:Number;
-		public function Videotube(gamedisc:Gamedisc)
-		{
-			super();
-			this.gamedisc = gamedisc;
-			iqte = 0;
-			secPrev = 0;
-			addEventListener(Event.ADDED_TO_STAGE, init);
-		}
-		private function init(e: Event):void 
-		{
-			removeEventListener(Event.ADDED_TO_STAGE, init);
-			addEventListener(Event.REMOVED_FROM_STAGE, cleanup);
-			
-			flv = new Video(stage.stageWidth, stage.stageHeight);
-			addChild(flv);
-			var conn:NetConnection = new NetConnection();
-			conn.connect(null);
-			stream = new NetStream(conn);
-			stream.client = new Object();
-			flv.attachNetStream(stream);
-			
-			stage.addEventListener(Event.ENTER_FRAME, tick);
-		}
-		private function cleanup(e: Event):void
-		{
-			removeEventListener(Event.REMOVED_FROM_STAGE, cleanup);
-			stage.removeEventListener(Event.ENTER_FRAME, tick);
-		}
-		private function tick(e: Event):void
-		{
-			var secNow:Number = stream.time;
-			if (secNow > secPrev && secPrev >= 0)
-			{
-				while(iqte < gamedisc.rgqte.length)
-				{
-					var qte:Qte = gamedisc.rgqte[iqte];
-					if (qte.secTrigger > secNow)
-						break;
-					if (qte.secTrigger > secPrev)
-						dispatchEvent(new EventQte(qte));
-					iqte ++;
-				}
-			}
-			else
-			{
-				iqte = 0;
-			}
-			secPrev = secNow;
-		}
-		public function play():void
-		{
-			stream.play(gamedisc.urlVideo);
-		}
-		
+		public function play():void 				{ throw "not implemented"; }
+		public function pause():void				{ throw "not implemented"; }
+		public function resume():void				{ throw "not implemented"; }
+		public function time():Number				{ throw "not implemented"; }
+		public function seek(sec:Number):void		{ throw "not implemented"; }
 	}
+	
 }
\ No newline at end of file
diff --git a/src/VideotubeFlv.as b/src/VideotubeFlv.as
new file mode 100644
index 0000000..4fd4933
--- /dev/null
+++ b/src/VideotubeFlv.as
@@ -0,0 +1,74 @@
+package  
+{
+	import flash.display.Sprite;
+	import flash.events.Event;
+	import flash.media.Video;
+	import flash.net.NetConnection;
+	import flash.net.NetStream;
+	/**
+	 * ...
+	 * @author jjp
+	 */
+	public class VideotubeFlv extends Videotube
+	{
+		private var flv:Video;
+		private var gamedisc:Gamedisc;
+		private var stream:NetStream;
+		private var iqte:int;
+		private var secPrev:Number;
+		public function VideotubeFlv(gamedisc:Gamedisc)
+		{
+			super();
+			this.gamedisc = gamedisc;
+			iqte = 0;
+			secPrev = 0;
+			addEventListener(Event.ADDED_TO_STAGE, init);
+		}
+		private function init(e: Event):void 
+		{
+			removeEventListener(Event.ADDED_TO_STAGE, init);
+			addEventListener(Event.REMOVED_FROM_STAGE, cleanup);
+			
+			flv = new Video(stage.stageWidth, stage.stageHeight);
+			addChild(flv);
+			var conn:NetConnection = new NetConnection();
+			conn.connect(null);
+			stream = new NetStream(conn);
+			stream.client = new Object();
+			flv.attachNetStream(stream);
+			
+			stage.addEventListener(Event.ENTER_FRAME, tick);
+		}
+		private function cleanup(e: Event):void
+		{
+			removeEventListener(Event.REMOVED_FROM_STAGE, cleanup);
+			stage.removeEventListener(Event.ENTER_FRAME, tick);
+		}
+		private function tick(e: Event):void
+		{
+			var secNow:Number = stream.time;
+			if (secNow > secPrev && secPrev >= 0)
+			{
+				while(iqte < gamedisc.rgqte.length)
+				{
+					var qte:Qte = gamedisc.rgqte[iqte];
+					if (qte.secTrigger > secNow)
+						break;
+					if (qte.secTrigger > secPrev)
+						dispatchEvent(new EventQte(qte));
+					iqte ++;
+				}
+			}
+			else
+			{
+				iqte = 0;
+			}
+			secPrev = secNow;
+		}
+		public override function play():void 			{ stream.play(gamedisc.urlVideo); }
+		public override function pause():void 			{ stream.pause(); }
+		public override function resume():void 			{ stream.resume(); }
+		public override function time():Number 			{ return stream.time; }
+		public override function seek(sec:Number):void 	{ stream.seek(sec); }
+	}
+}
\ No newline at end of file