diff --git a/NotEnoughAV1Encodes-Qt/NotEnoughAV1Encodes-Qt.py b/NotEnoughAV1Encodes-Qt/NotEnoughAV1Encodes-Qt.py
index d8abadb..61c1890 100755
--- a/NotEnoughAV1Encodes-Qt/NotEnoughAV1Encodes-Qt.py
+++ b/NotEnoughAV1Encodes-Qt/NotEnoughAV1Encodes-Qt.py
@@ -1124,7 +1124,6 @@ def get_source_framecount(self):
 
     def calc_progress(self):
         log_path = os.path.join(self.tempDir, self.temp_dir_file_name, "Progress")
-        mux_path = os.path.join(self.tempDir, self.temp_dir_file_name, "Chunks", "mux.txt")
         # Create a QThread object
         self.calc_thread = QThread()
         # Create a worker object
@@ -1132,7 +1131,7 @@ def calc_progress(self):
         # Move worker to the thread
         self.calc_worker.moveToThread(self.calc_thread)
         # Connect signals and slots
-        self.calc_thread.started.connect(partial(self.calc_worker.run, log_path, mux_path))
+        self.calc_thread.started.connect(partial(self.calc_worker.run, log_path))
         self.calc_worker.finished.connect(self.calc_thread.quit)
         self.calc_worker.finished.connect(self.calc_worker.deleteLater)
         self.calc_thread.finished.connect(self.calc_thread.deleteLater)
@@ -1164,6 +1163,10 @@ def main_encode(self):
         self.calc_progress()
 
     def worker_finished(self):
+        # Stops Progress Worker
+        self.calc_worker.stop()
+        self.calc_thread.quit()
+        self.calc_thread.wait()
         self.labelStatus.setText("Status: Muxing")
         self.main_muxing()
         self.labelStatus.setText("Status: Finished")
diff --git a/NotEnoughAV1Encodes-Qt/worker_progress.py b/NotEnoughAV1Encodes-Qt/worker_progress.py
index f725928..022efd3 100644
--- a/NotEnoughAV1Encodes-Qt/worker_progress.py
+++ b/NotEnoughAV1Encodes-Qt/worker_progress.py
@@ -19,17 +19,16 @@ class WorkerProgress(QObject):
     """
     progress = pyqtSignal(int)
     finished = pyqtSignal()
+    _is_running = True
     @pyqtSlot()
-    def run(self, progress_path, mux_path):
+    def run(self, progress_path):
         """
         Attributes
         ----------
         progress_path : path to where the log files are located
         """
-        mux_file_not_written = True
-        while mux_file_not_written:
+        while self._is_running:
             # Pulls the framecount every 2 seconds
-            time.sleep(2)
             total_encoded_frames = 0
             try:
                 for filename in os.listdir(progress_path):
@@ -41,7 +40,13 @@ def run(self, progress_path, mux_path):
                             total_encoded_frames += int(lines[idx[-1]][6:])
             except:
                 pass
-            if os.path.isfile(mux_path):
-                mux_file_not_written = False
-            self.progress.emit(total_encoded_frames)
+            if self._is_running:
+                self.progress.emit(total_encoded_frames)
+            time.sleep(2)
         self.finished.emit()
+    
+    def stop(self):
+        """
+        Stops the while loop in run()
+        """
+        self._is_running = False