Update app.py

app.py

@@ -524,7 +524,8 @@ async def youtube_transcript(
 ):
     """Get the transcript of a YouTube video."""
     try:
-        transcript = YTTranscriber.get_transcript(video_url, preserve_formatting=preserve_formatting, proxies=proxy)
+        proxies = {"http": proxy, "https": proxy} if proxy else None
+        transcript = YTTranscriber.get_transcript(video_url, languages=None, preserve_formatting=preserve_formatting, proxies=proxies)
         return JSONResponse(content=jsonable_encoder(transcript))
     except Exception as e:
         raise HTTPException(status_code=500, detail=f"Error getting YouTube transcript: {e}")