Добавил очередь

app/tasks.py

@@ -0,0 +1,16 @@
+from app.core.celery import celery_app
+from app.services import YouTubeService
+from app.schemas import DownloadRequest
+
+
+@celery_app.task(
+    bind=True,
+    name="download_youtube",
+    autoretry_for=(Exception,),
+    retry_kwargs={"max_retries": 3},
+    retry_backoff=True,
+)
+def download_youtube(self, url: str, quality: int) -> dict:
+    request = DownloadRequest(url=url, quality=quality)
+    response = YouTubeService.download(request)
+    return response.model_dump()