Update app.py

app.py

@@ -289,7 +289,7 @@ def add_transcript_voiceover(video_path, translated_json, output_path, add_voice
         final_audio = concatenate_audioclips(audio_segments)
         final_audio = final_audio.with_duration(video.duration)
 
-        final_video = final_video.set_audio(final_audio)
+        final_video = final_video.with_audio(final_audio)
 
     logger.info(f"Saving the final video to: {output_path}")
     final_video.write_videofile(output_path, codec="libx264", audio_codec="aac")