diff --git a/Assets/FlashTools/Scripts/Internal/Editor/Postprocessors/SwfPostprocessor.cs b/Assets/FlashTools/Scripts/Internal/Editor/Postprocessors/SwfPostprocessor.cs
index f41960a..9d9cefb 100644
--- a/Assets/FlashTools/Scripts/Internal/Editor/Postprocessors/SwfPostprocessor.cs
+++ b/Assets/FlashTools/Scripts/Internal/Editor/Postprocessors/SwfPostprocessor.cs
@@ -207,21 +207,23 @@ namespace FlashTools.Internal {
 			SwfLibrary library, SwfAsset asset)
 		{
 			var bitmap_defines = library.Defines
-				.Where  (p => p.Value.Type == SwfLibraryDefineType.Bitmap)
-				.Select (p => new KeyValuePair<int, SwfLibraryBitmapDefine>(
-					p.Key, p.Value as SwfLibraryBitmapDefine))
-				.ToArray();
+				.Where       (p => p.Value.Type == SwfLibraryDefineType.Bitmap)
+				.ToDictionary(p => p.Key, p => p.Value as SwfLibraryBitmapDefine);
 			var textures = bitmap_defines
-				.Select (p => LoadTextureFromBitmapDefine(p.Value))
-				.ToArray();
-			var rects = PackAndSaveBitmapsAtlas(asset, textures);
-			var bitmaps = new List<SwfBitmapData>(bitmap_defines.Length);
-			for ( var i = 0; i < bitmap_defines.Length; ++i ) {
-				var bitmap_define = bitmap_defines[i];
+				.Where  (p => p.Value.Redirect == 0)
+				.Select (p => new KeyValuePair<int, Texture2D>(
+					p.Key, LoadTextureFromBitmapDefine(p.Value)))
+				.ToList();
+			var rects = PackAndSaveBitmapsAtlas(asset, textures.Select(p => p.Value).ToArray());
+			var bitmaps = new List<SwfBitmapData>(bitmap_defines.Count);
+			foreach ( var bitmap_define in bitmap_defines ) {
+				var texture_key = bitmap_define.Value.Redirect > 0
+					? bitmap_define.Value.Redirect
+					: bitmap_define.Key;
 				var bitmap_data = new SwfBitmapData{
 					Id         = bitmap_define.Key,
 					RealSize   = new Vector2(bitmap_define.Value.Width, bitmap_define.Value.Height),
-					SourceRect = rects[i]};
+					SourceRect = rects[textures.FindIndex(p => p.Key == texture_key)]};
 				bitmaps.Add(bitmap_data);
 			}
 			return bitmaps;
diff --git a/Assets/FlashTools/Scripts/Internal/Editor/SwfTools/SwfContext.cs b/Assets/FlashTools/Scripts/Internal/Editor/SwfTools/SwfContext.cs
index 6c34031..eca2488 100644
--- a/Assets/FlashTools/Scripts/Internal/Editor/SwfTools/SwfContext.cs
+++ b/Assets/FlashTools/Scripts/Internal/Editor/SwfTools/SwfContext.cs
@@ -31,9 +31,10 @@ namespace FlashTools.Internal.SwfTools {
 	}
 
 	public class SwfLibraryBitmapDefine : SwfLibraryDefine {
-		public int    Width  = 0;
-		public int    Height = 0;
-		public byte[] ARGB32 = new byte[0];
+		public int    Width    = 0;
+		public int    Height   = 0;
+		public byte[] ARGB32   = new byte[0];
+		public ushort Redirect = 0;
 
 		public override SwfLibraryDefineType Type {
 			get { return SwfLibraryDefineType.Bitmap; }
diff --git a/Assets/FlashTools/Scripts/Internal/Editor/SwfTools/SwfContextExecuter.cs b/Assets/FlashTools/Scripts/Internal/Editor/SwfTools/SwfContextExecuter.cs
index 7c4028a..456aea8 100644
--- a/Assets/FlashTools/Scripts/Internal/Editor/SwfTools/SwfContextExecuter.cs
+++ b/Assets/FlashTools/Scripts/Internal/Editor/SwfTools/SwfContextExecuter.cs
@@ -276,7 +276,6 @@ namespace FlashTools.Internal.SwfTools {
 		}
 
 		public SwfDisplayList Visit(DefineBinaryDataTag tag, SwfDisplayList dl) {
-			//TODO: IMPLME
 			return dl;
 		}
 
@@ -302,11 +301,12 @@ namespace FlashTools.Internal.SwfTools {
 		}
 
 		void AddBitmapToLibrary(ushort define_id, int width, int height, byte[] argb32) {
+			var duplicated = FindDuplicatedBitmap(argb32);
 			var define = new SwfLibraryBitmapDefine{
-				Width  = width,
-				Height = height,
-				ARGB32 = argb32
-			};
+				Width    = width,
+				Height   = height,
+				ARGB32   = duplicated > 0 ? new byte[0] : argb32,
+				Redirect = duplicated};
 			Library.Defines.Add(define_id, define);
 		}
 
@@ -317,6 +317,18 @@ namespace FlashTools.Internal.SwfTools {
 			Library.Defines.Add(define_id, define);
 		}
 
+		ushort FindDuplicatedBitmap(byte[] argb32) {
+			foreach ( var define in Library.Defines ) {
+				var bitmap = define.Value as SwfLibraryBitmapDefine;
+				if ( bitmap != null && bitmap.ARGB32.Length == argb32.Length ) {
+					if ( bitmap.ARGB32.SequenceEqual(argb32) ) {
+						return define.Key;
+					}
+				}
+			}
+			return 0;
+		}
+
 		bool IsSpriteTimelineEnd(SwfDisplaySpriteInstance sprite) {
 			var sprite_def = Library.FindDefine<SwfLibrarySpriteDefine>(sprite.Id);
 			if ( sprite_def != null && sprite.CurrentTag < sprite_def.ControlTags.Tags.Count ) {