diff --git a/Assets/FlashTools/Scripts/FTRuntime/SwfClip.cs b/Assets/FlashTools/Scripts/FTRuntime/SwfClip.cs
index 50916a1..e37a99e 100644
--- a/Assets/FlashTools/Scripts/FTRuntime/SwfClip.cs
+++ b/Assets/FlashTools/Scripts/FTRuntime/SwfClip.cs
@@ -13,6 +13,27 @@ namespace FTRuntime {
 		SwfClipAsset.Sequence _curSequence  = null;
 		MaterialPropertyBlock _curPropBlock = null;
 
+		// ---------------------------------------------------------------------
+		//
+		// Events
+		//
+		// ---------------------------------------------------------------------
+
+		/// <summary>
+		/// Occurs when clip changes
+		/// </summary>
+		public event System.Action<SwfClip> OnChangeClipEvent;
+
+		/// <summary>
+		/// Occurs when sequence changes
+		/// </summary>
+		public event System.Action<SwfClip> OnChangeSequenceEvent;
+
+		/// <summary>
+		/// Occurs when current frame changes
+		/// </summary>
+		public event System.Action<SwfClip> OnChangeCurrentFrameEvent;
+
 		// ---------------------------------------------------------------------
 		//
 		// Serialized fields
@@ -94,6 +115,7 @@ namespace FTRuntime {
 				_sequence     = string.Empty;
 				_currentFrame = 0;
 				ChangeClip();
+				EmitChangeEvents(true, true, true);
 			}
 		}
 
@@ -107,6 +129,7 @@ namespace FTRuntime {
 				_sequence     = value;
 				_currentFrame = 0;
 				ChangeSequence();
+				EmitChangeEvents(false, true, true);
 			}
 		}
 
@@ -119,6 +142,7 @@ namespace FTRuntime {
 			set {
 				_currentFrame = value;
 				ChangeCurrentFrame();
+				EmitChangeEvents(false, false, true);
 			}
 		}
 
@@ -142,7 +166,7 @@ namespace FTRuntime {
 			get {
 				return clip
 					? clip.FrameRate
-					: 1.0f;
+					: 0.0f;
 			}
 		}
 
@@ -330,6 +354,18 @@ namespace FTRuntime {
 			}
 		}
 
+		void EmitChangeEvents(bool clip, bool sequence, bool current_frame) {
+			if ( clip && OnChangeClipEvent != null ) {
+				OnChangeClipEvent(this);
+			}
+			if ( sequence && OnChangeSequenceEvent != null ) {
+				OnChangeSequenceEvent(this);
+			}
+			if ( current_frame && OnChangeCurrentFrameEvent != null ) {
+				OnChangeCurrentFrameEvent(this);
+			}
+		}
+
 		SwfClipAsset.Frame GetCurrentBakedFrame() {
 			var frames = _curSequence != null ? _curSequence.Frames : null;
 			return frames != null && currentFrame >= 0 && currentFrame < frames.Count
@@ -347,6 +383,10 @@ namespace FTRuntime {
 			Internal_UpdateAllProperties();
 		}
 
+		void Start() {
+			EmitChangeEvents(true, true, true);
+		}
+
 		void OnEnable() {
 			var swf_manager = SwfManager.GetInstance(true);
 			if ( swf_manager ) {
diff --git a/Assets/FlashTools/Scripts/FTRuntime/SwfClipController.cs b/Assets/FlashTools/Scripts/FTRuntime/SwfClipController.cs
index c779015..b8c47e2 100644
--- a/Assets/FlashTools/Scripts/FTRuntime/SwfClipController.cs
+++ b/Assets/FlashTools/Scripts/FTRuntime/SwfClipController.cs
@@ -17,17 +17,17 @@ namespace FTRuntime {
 		// ---------------------------------------------------------------------
 
 		/// <summary>
-		/// Occurs when on stop playing event
+		/// Occurs when the controller stops played clip
 		/// </summary>
 		public event System.Action<SwfClipController> OnStopPlayingEvent;
 
 		/// <summary>
-		/// Occurs when on play stopped event
+		/// Occurs when the controller plays stopped clip
 		/// </summary>
 		public event System.Action<SwfClipController> OnPlayStoppedEvent;
 
 		/// <summary>
-		/// Occurs when on rewind playing event
+		/// Occurs when the controller rewinds played clip
 		/// </summary>
 		public event System.Action<SwfClipController> OnRewindPlayingEvent;
 
@@ -298,16 +298,17 @@ namespace FTRuntime {
 
 		internal void Internal_Update(float dt) {
 			if ( isPlaying ) {
-				UpdateTimer(dt);
-			}
-		}
-
-		void UpdateTimer(float dt) {
-			var frame_rate = clip ? clip.frameRate : 1.0f;
-			_tickTimer += frame_rate * rateScale * dt;
-			while ( _tickTimer > 1.0f ) {
-				_tickTimer -= 1.0f;
-				TimerTick();
+				_tickTimer += dt;
+				do {
+					var frame_rate = clip ? clip.frameRate * rateScale : 0.0f;
+					var frame_time = frame_rate > 0.0f ? 1.0f / frame_rate : 0.0f;
+					if ( frame_time > 0.0f && frame_time <= _tickTimer ) {
+						_tickTimer -= frame_time;
+						TimerTick();
+					} else {
+						break;
+					}
+				} while ( isPlaying );
 			}
 		}