diff --git a/ISCamRecorder/ISCamera.cs b/ISCamRecorder/ISCamera.cs
index 5a55c6d..50c5e6c 100644
--- a/ISCamRecorder/ISCamera.cs
+++ b/ISCamRecorder/ISCamera.cs
@@ -120,15 +120,16 @@
         /// ファイル保存
         /// </summary>
         /// <param name="outDir"></param>
-        public void SaveToFile(string outDir, float frrate, int movieRate, string imageType) {
-            Debug.WriteLine($"{_CamID} starts saving with {frrate}fps.");
+        public void SaveToFile(string outDir, float frameRate, int movieRate, 
+            string imageType, string recTime) {
+            Debug.WriteLine($"{_CamID} starts saving with {frameRate}fps.");
             // 保存先確保
             var outDir2 = Path.Combine(outDir, _CamID);
             Directory.CreateDirectory(outDir2);
             // 動画保存準備
-            var movieFile = Path.Combine(outDir, $"{_CamID}.mp4");
+            var movieFile = Path.Combine(outDir, $"{_CamID}_{recTime}.mp4");
             var writer = new H264Writer(movieFile, 
-                _RecSink.OutputFrameType, (int)frrate, movieRate * 1000);
+                _RecSink.OutputFrameType, (int)frameRate, movieRate * 1000);
             writer.Begin();
             // ファイル保存
             var firstDriverTime = _bufferlist[0].FrameMetadata.DriverFrameFirstPacketTime;
diff --git a/ISCamRecorder/MainForm.cs b/ISCamRecorder/MainForm.cs
index 4e0c463..0798db6 100644
--- a/ISCamRecorder/MainForm.cs
+++ b/ISCamRecorder/MainForm.cs
@@ -238,14 +238,13 @@
                 var framesToCapture = (int)(float.Parse(TxtRecodingDulation.Text) 
                     * frameRate + 1.0F);
                 var movieRate = int.Parse(TxtMovieRate.Text);
-                var outputDir = Path.Combine(TxtOutputDir.Text, 
-                    "rec" + DateTime.Now.ToString("yyyyMMdd_HHmmss"));
+                var recTime = DateTime.Now.ToString("yyyyMMdd_HHmmss");
+                var outputDir = Path.Combine(TxtOutputDir.Text, $"rec{recTime}");
                 Directory.CreateDirectory(outputDir);
                 var imageType = CboImageType.Text;
-                var sensorFile = Path.Combine(outputDir, @"sensor.csv");
+                var sensorFile = Path.Combine(outputDir, $"Sensor_{recTime}.csv");
                 _Sensor.StartRecoding(sensorFile);
                 // 録画
-                //DateTime recordStartTime = DateTime.Now;
                 Task[] tasks = new Task[4];
                 for (var i = 0; i < _Cameras.Count; i++) {
                     var cam = _Cameras[i];
@@ -259,7 +258,7 @@
                 for (var i = 0; i < _Cameras.Count; i++) {
                     var cam = _Cameras[i];
                     tasks[i] = Task.Run(() => cam.SaveToFile(
-                        outputDir, frameRate, movieRate, imageType));
+                        outputDir, frameRate, movieRate, imageType, recTime));
                 }
                 Task.WaitAll(tasks);