Update modules/app.py

modules/app.py

@@ -104,7 +104,7 @@ async def concatenate_videos(input_data: VideosInput):
 
         # Download videos to temporary files
         for video_url in input_data.video_urls:
-            temp_video_paths.append(await download_file(video_url, ".mp4"))
+            temp_video_paths.append(await download_file(str(video_url), ".mp4"))
 
         # Generate a unique filename
         output_filename = f"{uuid.uuid4()}.mp4"