diff --git a/trunk/research/players/js/srs.player.js b/trunk/research/players/js/srs.player.js
index 2896d5649..1b1d7a882 100755
--- a/trunk/research/players/js/srs.player.js
+++ b/trunk/research/players/js/srs.player.js
@@ -78,6 +78,9 @@ SrsPlayer.prototype.start = function(url) {
 * @param volume the volume, 0 is mute, 1 is 100%, 2 is 200%.
 */
 SrsPlayer.prototype.play = function(url, volume) {
+    this.stop();
+    SrsPlayer.__players.push(this);
+    
     if (url) {
         this.stream_url = url;
     }
@@ -118,8 +121,8 @@ SrsPlayer.prototype.resume = function() {
 *       use metadata width if 0.
 *       use user specified width if -1.
 */
-SrsPlayer.prototype.dar = function(num, den) {
-    this.callbackObj.ref.__dar(num, den);
+SrsPlayer.prototype.set_dar = function(num, den) {
+    this.callbackObj.ref.__set_dar(num, den);
 }
 /**
 * set the fullscreen size data.
diff --git a/trunk/research/players/srs_chat.html b/trunk/research/players/srs_chat.html
index 23de8b3f3..270322d91 100755
--- a/trunk/research/players/srs_chat.html
+++ b/trunk/research/players/srs_chat.html
@@ -78,8 +78,11 @@
                 realtime_player = new SrsPlayer("realtime_player", 430, 185);
                 realtime_player.on_player_ready = function() {
                     this.set_bt(0.5);
-                    this.set_fs("screen", 100);
                 };
+                realtime_player.on_player_metadata = function(metadata) {
+                    this.set_dar(0, 0);
+                    this.set_fs("screen", 100);
+                }
                 realtime_player.start();
             }
             
@@ -230,8 +233,11 @@
                     var _player = new SrsPlayer("rp_raw_" + chat.id, 600, 300, chat);
                     _player.on_player_ready = function() {
                         this.set_bt(0.5);
-                        this.set_fs("screen", 100);
                     };
+                    _player.on_player_metadata = function(metadata) {
+                        this.set_dar(0, 0);
+                        this.set_fs("screen", 100);
+                    }
                     _player.start(chat.url);
                     
                     chat.player = _player;
diff --git a/trunk/research/players/srs_player.html b/trunk/research/players/srs_player.html
index 64b5ab4b2..5ebc545fb 100755
--- a/trunk/research/players/srs_player.html
+++ b/trunk/research/players/srs_player.html
@@ -34,7 +34,7 @@
         
         var __active_dar = null;
         function select_dar(dar_id, num, den) {
-            srs_player.dar(num, den);
+            srs_player.set_dar(num, den);
             
             if (__active_dar) {
                 __active_dar.removeClass("active");
diff --git a/trunk/research/players/srs_player/release/srs_player.swf b/trunk/research/players/srs_player/release/srs_player.swf
index e57129fdc..176e8d6be 100755
Binary files a/trunk/research/players/srs_player/release/srs_player.swf and b/trunk/research/players/srs_player/release/srs_player.swf differ
diff --git a/trunk/research/players/srs_player/src/srs_player.as b/trunk/research/players/srs_player/src/srs_player.as
index 07b36a7a0..4e4891a05 100755
--- a/trunk/research/players/srs_player/src/srs_player.as
+++ b/trunk/research/players/srs_player/src/srs_player.as
@@ -115,7 +115,7 @@ package
             flash.external.ExternalInterface.addCallback("__stop", this.js_call_stop);
             flash.external.ExternalInterface.addCallback("__pause", this.js_call_pause);
             flash.external.ExternalInterface.addCallback("__resume", this.js_call_resume);
-            flash.external.ExternalInterface.addCallback("__dar", this.js_call_dar);
+            flash.external.ExternalInterface.addCallback("__set_dar", this.js_call_set_dar);
             flash.external.ExternalInterface.addCallback("__set_fs", this.js_call_set_fs_size);
             flash.external.ExternalInterface.addCallback("__set_bt", this.js_call_set_bt);
             
@@ -229,7 +229,7 @@ package
          *       use metadata width if 0.
          *       use user specified width if -1.
          */
-        private function js_call_dar(num:int, den:int):void {
+        private function js_call_set_dar(num:int, den:int):void {
             user_dar_num = num;
             user_dar_den = den;
             
diff --git a/trunk/research/players/srs_publisher.html b/trunk/research/players/srs_publisher.html
index b587720f8..6bdcabcc7 100755
--- a/trunk/research/players/srs_publisher.html
+++ b/trunk/research/players/srs_publisher.html
@@ -80,16 +80,22 @@
                 remote_player = new SrsPlayer("remote_player", 430, 185);
                 remote_player.on_player_ready = function() {
                     this.set_bt(0.8);
-                    this.set_fs("screen", 100);
                 };
+                remote_player.on_player_metadata = function(metadata) {
+                    this.set_dar(0, 0);
+                    this.set_fs("screen", 100);
+                }
                 remote_player.start();
                 
                 // start the realtime player.
                 realtime_player = new SrsPlayer("realtime_player", 430, 185);
                 realtime_player.on_player_ready = function() {
                     this.set_bt(0.8);
-                    this.set_fs("screen", 100);
                 };
+                realtime_player.on_player_metadata = function(metadata) {
+                    this.set_dar(0, 0);
+                    this.set_fs("screen", 100);
+                }
                 realtime_player.start();
             }
         });