Update app.py

app.py

@@ -200,7 +200,8 @@ def generate_video(input_text, language_set, font_size, theme, canvas_size,llm_t
 
     # Add music to the generated video with fade-out effect
     music_file = "./music.WAV"  # Path to your music file
-    
+    if not os.path.exists(music_file):
+        return output_video,output_video
     final_video = tts_file_name(input_text)    
     # subprocess.run([
     #     "ffmpeg", "-y", "-i", output_video, "-i", music_file,