diff --git a/ISCamRecorder/CvCamera.cs b/ISCamRecorder/CvCamera.cs
index 516e961..eeed91e 100644
--- a/ISCamRecorder/CvCamera.cs
+++ b/ISCamRecorder/CvCamera.cs
@@ -31,11 +31,10 @@
     /// OpenCVカメラで撮影する
     /// </summary>
     class CvCamera {
-        VideoCapture camera = null;     // カメラオブジェクト
+        VideoCapture camera = null;         // カメラオブジェクト
         Bitmap[] _Buffer = new Bitmap[2];   // ダブルバッファ
-        int _WriteBufferID = 0;         // 書き込みバッファ番号
+        int _WriteBufferID = 0;             // 書き込みバッファ番号
         FrameRateCounter _Fps = new FrameRateCounter(10);   // フレームレート計測
-        bool _Recoding = false;     // 録画中フラグ
         List<FrameInfo> _RecFrames = new List<FrameInfo>(); // 録画画像
         float _RecFrameRate = 0;    // 録画フレームレート
         MainForm _MainForm = null;  // メインフォーム
@@ -78,8 +77,9 @@
                     camera.Read(frame);
                     _Buffer[_WriteBufferID] = BitmapConverter.ToBitmap(frame);
 
-                    if (_Recoding) {
+                    if (_MainForm.State == STATE.Recoding) {
                         _RecFrames.Add(new FrameInfo(frame.Clone()));
+                        if (_RecFrameRate == 0) _RecFrameRate = _Fps.FrameRate;
                     }
                     _WriteBufferID = 1 - _WriteBufferID; // バッファ切り替え
 
@@ -104,15 +104,15 @@
         /// <param name="outDir"></param>
         /// <param name="imageType"></param>
         /// <param name="recTime"></param>
-        public void SaveToFile(string imageType, string recTime) {
+        public void SaveToFile(string imageType) {
             if (_RecFrames.Count < 1) return;
             var CamID = "CvCam";
-            Debug.WriteLine($"{CamID} starts saving with 0.0fps.");
+            Debug.WriteLine($"{CamID} starts saving with {_RecFrameRate:0.0}fps.");
             // 保存先確保
             var outDir2 = Path.Combine(_MainForm.OutputDir, CamID);
             Directory.CreateDirectory(outDir2);
             // 動画保存準備
-            var movieFile = Path.Combine(_MainForm.OutputDir, $"{CamID}_{recTime}.mp4");
+            var movieFile = Path.Combine(_MainForm.OutputDir, $"{CamID}_{_MainForm.RecodingTimeStr}.mp4");
             var writer = new VideoWriter(movieFile, FourCC.H264, 
                 _RecFrameRate, _RecFrames[0].FrameImage.Size());
             for (int i = 0; i < _RecFrames.Count; i++) {
@@ -125,26 +125,11 @@
             writer.Release();
 
             _RecFrames.Clear();
+            _RecFrameRate = 0;
             Debug.WriteLine($"{CamID} ends saving.");
         }
 
         /// <summary>
-        /// 録画開始
-        /// </summary>
-        public void StartRecoding() {
-            if (_RecFrames.Count > 0) _RecFrames.Clear();
-            _RecFrameRate = _Fps.FrameRate;
-            _Recoding = true;
-        }
-
-        /// <summary>
-        /// 録画中断
-        /// </summary>
-        public void StopRecoding() {
-            _Recoding = false;
-        }
-
-        /// <summary>
         /// カメラ情報文字列
         /// </summary>
         /// <returns></returns>
diff --git a/ISCamRecorder/MainForm.cs b/ISCamRecorder/MainForm.cs
index 3001149..df1a8f6 100644
--- a/ISCamRecorder/MainForm.cs
+++ b/ISCamRecorder/MainForm.cs
@@ -316,16 +316,13 @@
             var frameRate = _Cameras.Select(c => c.FrameRate).Average();
             var framesToCapture = (int)(float.Parse(recodingDulationTxt) * frameRate + 1.0F);
             var movieRate = int.Parse(movieRateTxt);
-            //var recTime = DateTime.Now.ToString("yyyyMMdd_HHmmss");
-            //var outputDir = Path.Combine(TxtOutputDir.Text, $"rec{recTime}");
             var imageType = imageTypeTxt;
-            //var sensorFile = Path.Combine(outputDir, $"Sensor_{recTime}.csv");
 
+            // 録画開始
             RecodingTime = DateTime.Now;
             Directory.CreateDirectory(OutputDir);
             State = STATE.Recoding;
-            //_Sensor.StartRecoding(sensorFile);
-            _CvCamera.StartRecoding();
+            //_CvCamera.StartRecoding();
             // 録画
             Task[] tasks = new Task[4];
             for (var i = 0; i < _Cameras.Count; i++) {
@@ -335,8 +332,8 @@
             Task.WaitAll(tasks);
 
             State = STATE.Saving;
-            //_Sensor.StopRecoding();
-            _CvCamera.StopRecoding();
+            //_CvCamera.StopRecoding();
+
             // 保存
             this.Invoke((MethodInvoker)delegate {
                 BtnRecodeMovie.Text = "保存中";
@@ -349,7 +346,7 @@
                     OutputDir, frameRate, movieRate, imageType, RecodingTimeStr));
             }
             Task.WaitAll(tasks);
-            _CvCamera.SaveToFile(imageType, RecodingTimeStr);
+            _CvCamera.SaveToFile(imageType);
 
             // プレビューモードへ変更
             this.Invoke((MethodInvoker)delegate {
@@ -359,6 +356,7 @@
                 BtnRecodeMovie.Enabled = true;
                 BtnSetProperty.Enabled = true;
             });
+            State = STATE.Idle;
         }
 
         /// <summary>