Update app.py

app.py

@@ -246,7 +246,7 @@ async def get_track_download_url(video_url: str, quality: str) -> str:
                     logger.warning(f"Video unavailable error from {api_url}")
                     break  # Only break for specific error
                 
-                if "url" in json_response:
+                if "url" in json_response or "picker" in json_response:
                     api_rotator.update_last_successful(i)
                     return json_response