Wait for samples to load

app.py

@@ -24,7 +24,9 @@ def main():
     st.markdown("###")    
     uploaded_file = st.file_uploader('Upload a picture', type=['mp4', 'jpg', 'jpeg', 'png'], accept_multiple_files=False)
 
-    time.sleep(7)
+    with st.spinner(f'Loading samples...'):
+        while not os.path.isdir(base_path):
+            time.sleep(1)
     st.markdown("### or")
     selected_file = st_file_selector(st, path='sample_files', key = 'selected', label = 'Choose a sample image/video')