Update app.py

app.py

@@ -204,7 +204,7 @@ def blend_vsfx(video_in, audio_result):
         audioClip = audioClip.with_start(0).with_duration(clip.duration)
     elif clip.duration > audioClip.duration :
         clip = clip.subclip((0.0), (audioClip.duration))
-    final_clip = clip.set_audio(audioClip)
+    final_clip = clip.with_audio(audioClip)
     # Set the output codec
     codec = 'libx264'
     audio_codec = 'aac'