diff --git a/FDK/src/04.Graphics/CVideoDecoder.cs b/FDK/src/04.Graphics/CVideoDecoder.cs
index 56bfa909..6871c922 100644
--- a/FDK/src/04.Graphics/CVideoDecoder.cs
+++ b/FDK/src/04.Graphics/CVideoDecoder.cs
@@ -78,7 +78,8 @@ namespace FDK
 
 		public void Dispose()
 		{
-			close = true;
+			bDrawing = false;
+            close = true;
 			cts?.Cancel();
 			while (DS != DecodingState.Stopped) ;
 			frameconv.Dispose();
@@ -102,7 +103,9 @@ namespace FDK
 			CTimer.Reset();
 			CTimer.Resume();
 			this.bPlaying = true;
-		}
+            bDrawing = true;
+
+        }
 
 		public void PauseControl()
 		{
@@ -122,7 +125,8 @@ namespace FDK
 		{
 			CTimer.Pause();
 			this.bPlaying = false;
-		}
+			bDrawing = false;
+        }
 
 		public void InitRead()
 		{
@@ -329,7 +333,8 @@ namespace FDK
 
 		//for play
 		public bool bPlaying { get; private set; } = false;
-		private CTimer CTimer;
+        public bool bDrawing { get; private set; } = false;
+        private CTimer CTimer;
 		private AVRational Framerate;
 		private CTexture lastTexture;
 		private bool bqueueinitialized = false;
diff --git a/OpenTaiko/src/Stages/05.SongSelect/CActSelect曲リスト.cs b/OpenTaiko/src/Stages/05.SongSelect/CActSelect曲リスト.cs
index 7a762acc..fe07b1d3 100644
--- a/OpenTaiko/src/Stages/05.SongSelect/CActSelect曲リスト.cs
+++ b/OpenTaiko/src/Stages/05.SongSelect/CActSelect曲リスト.cs
@@ -391,11 +391,14 @@ namespace TJAPlayer3
 			}
 			else
 			{
-				this.rCurrentlySelectedSong.rParentNode.bIsOpenFolder = false;
 				// Reindex the parent node
-				this.rCurrentlySelectedSong.rParentNode.Openindex = rCurrentlySelectedSong.rParentNode.list子リスト.IndexOf(this.rCurrentlySelectedSong);
-				tChangeSong(-this.rCurrentlySelectedSong.rParentNode.Openindex);
-			}
+				List<CSongListNode> currentSongList = flattenList(TJAPlayer3.Songs管理.list曲ルート, true);
+                this.rCurrentlySelectedSong.rParentNode.Openindex = currentSongList.IndexOf(this.rCurrentlySelectedSong) - currentSongList.IndexOf(this.rCurrentlySelectedSong.rParentNode.list子リスト[0]);
+                this.rCurrentlySelectedSong.rParentNode.bIsOpenFolder = false;
+                tChangeSong(-this.rCurrentlySelectedSong.rParentNode.Openindex);
+
+
+            }
 
 			this.t現在選択中の曲を元に曲バーを再構成する();
 			this.t選択曲が変更された(false);                                 // #27648 項目数変更を反映させる
diff --git a/OpenTaiko/src/Stages/07.Game/CAct演奏AVI.cs b/OpenTaiko/src/Stages/07.Game/CAct演奏AVI.cs
index 70189793..b3a87792 100644
--- a/OpenTaiko/src/Stages/07.Game/CAct演奏AVI.cs
+++ b/OpenTaiko/src/Stages/07.Game/CAct演奏AVI.cs
@@ -44,9 +44,9 @@ namespace TJAPlayer3
 
 		public unsafe int t進行描画( int x, int y )
 		{
-			if ( !base.IsDeActivated )
+			if ( !base.IsDeActivated)
 			{
-				if (this.rVD == null)
+				if (this.rVD == null || !rVD.bDrawing)
 					return 0;
 					
 				this.rVD.GetNowFrame(ref this.tx描画用);
diff --git a/OpenTaiko/src/Stages/07.Game/CStage演奏画面共通.cs b/OpenTaiko/src/Stages/07.Game/CStage演奏画面共通.cs
index b77770f3..f9f50089 100644
--- a/OpenTaiko/src/Stages/07.Game/CStage演奏画面共通.cs
+++ b/OpenTaiko/src/Stages/07.Game/CStage演奏画面共通.cs
@@ -7,6 +7,7 @@ using FDK;
 using FDK.ExtensionMethods;
 using TJAPlayer3;
 using System.Linq;
+using Silk.NET.Core;
 
 namespace TJAPlayer3
 {
@@ -5575,7 +5576,8 @@ namespace TJAPlayer3
                         else
                         {
                             this.actAVI.Seek(0);
-                        }  
+                        }
+                        break;
                     } 
                 }
             }