max out number of workers

app.py

@@ -87,7 +87,7 @@ def vid2frames(url, sampling_interval=1, ext='mp4'):
     print(f'video saved at: {video}, fps:{fps}, skip_frames: {skip_frames}')
     # extract video frames at given sampling interval with multiprocessing - 
     print('extracting frames...')
-    n_workers = os.cpu_count()
+    n_workers = min(os.cpu_count(), 12)
    # testing..
     cap = cv2.VideoCapture(video)
     print(f'video: {video}; isOpen? : {cap.isOpened()}')