Update app.py

app.py

@@ -23,7 +23,6 @@ def load(URL):
     yt = YouTube(URL)
     vid_cap = yt.streams.filter(progressive=True, file_extension='mp4').order_by('resolution').desc().last().download(filename="tmp.mp4")
     global player
-    player.release()
     player = cv2.VideoCapture(vid_cap)
     frame_num = int(player.get(cv2.CAP_PROP_POS_FRAMES))
     frame_count = int(player.get(cv2.CAP_PROP_FRAME_COUNT))