diff --git a/main.go b/main.go
index e4b8c3e..fd0d3ee 100644
--- a/main.go
+++ b/main.go
@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"path/filepath"
 	"os"
 	"os/exec"
 	"regexp"
@@ -77,8 +78,14 @@ func main() {
 		fmt.Println("❌ Aufnahmefehler:", err)
 	}
 
-	// MP4 umwandeln
-	mp4Out := strings.TrimSuffix(outputPath, ".ts") + ".mp4"
+	mp4Out := outputPath
+	ext := filepath.Ext(outputPath)
+
+	// Falls nicht bereits .mp4 als Endung existiert
+	if ext != ".mp4" {
+    	mp4Out = strings.TrimSuffix(outputPath, ext) + ".mp4"
+	}
+
 	if err := exec.Command("ffmpeg", "-y", "-i", outputPath, "-c", "copy", mp4Out).Run(); err != nil {
 		fmt.Println("⚠️ Fehler bei Umwandlung in MP4:", err)
 	} else {
diff --git a/recorder.exe b/recorder.exe
index 8293809..4773972 100644
Binary files a/recorder.exe and b/recorder.exe differ