Update app.py

app.py

@@ -91,7 +91,7 @@ def write_video(video_in_filepath, video_out_filepath, detection_model):
                                fps, 
                                (frame_w, frame_h))
 
-    for i in tqdm(range(nb_frames)):
+    while True:
         ret, image_np = video_reader.read()
         if not ret:
             break