Update app.py

app.py

@@ -230,10 +230,19 @@ $$
 
 # Example usage in a Gradio interface
 def process_input(video, youtube_link):
-    if video is not None and len(youtube_link) > 0:
+
+    provided_video = video is not None
+    if youtube_link is None:
+        provided_link = False
+    elif isinstance(youtube_link, str):
+        provided_link = len(youtube_link) > 0
+    else:
+        raise ValueError(f"Invalid type of link {youtube_link}.")
+    
+    if provided_video and provided_link:
         raise ValueError("Please provide either a video file or a YouTube link, not both.")
 
-    if video is not None:
+    if provided_video:
         print(video)
 
         # # Load model globally
@@ -248,7 +257,9 @@ def process_input(video, youtube_link):
         return image, df_show, gr.Markdown(note), tsne_image
 
     else:
-        assert len(youtube_link) > 0, \
+        print(provided_link)
+    
+        assert provided_link, \
             "YouTube Link cannot be empty if no video is provided."
         
         video_id = get_video_id_from_url(youtube_link)