Update app.py

app.py

@@ -36,7 +36,7 @@ def youtube_video_downloader(url):
 
 def audio_extraction(video_file, output_format):
     audio = extract_audio(
-        input_path=video_file, output_path=f"{str(video_file)[:-3]}mp3", output_format=output_format
+        input_path=video_file, output_path=f"{video_file.name}.mp3", output_format=output_format
     )
     return audio