Update app.py

app.py

@@ -293,7 +293,7 @@ def loop_audio_to_length(audio_clip, target_duration):
             return AudioClip(lambda t: 0, duration=target_duration, fps=sr)
         except Exception as e:
             logger.error(f"Could not create silence clip: {e}", exc_info=True)
-            return AudioFileClip(filename="")
+            return None
     if audio_clip.duration >= target_duration:
         logger.debug("Audio clip already longer or equal to target. Trimming.")
         trimmed_clip = audio_clip.subclip(0, target_duration)
@@ -301,7 +301,7 @@ def loop_audio_to_length(audio_clip, target_duration):
             logger.error("Trimmed audio clip is invalid.")
             try: trimmed_clip.close()
             except: pass
-            return AudioFileClip(filename="")
+            return None
         return trimmed_clip
     loops = math.ceil(target_duration / audio_clip.duration)
     logger.debug(f"Creando {loops} loops de audio")
@@ -327,7 +327,7 @@ def loop_audio_to_length(audio_clip, target_duration):
         except:
             pass
         logger.error("Fallback to original audio clip failed.")
-        return AudioFileClip(filename="")
+        return None
     finally:
         if looped_audio is not None and looped_audio is not final_looped_audio:
             try: looped_audio.close()
@@ -560,7 +560,7 @@ def crear_video(prompt_type, input_text, selected_voice, musica_file=None):
             raise ValueError("El clip de video base es inválido.")
 
         # 6. Manejar música de fondo
-        final_audio = audio_tts
+        final_audio = audio_tts  # Inicializar final_audio con audio_tts
         if musica_file:
             logger.info(f"Procesando música de fondo: {musica_file}")
             try:
@@ -582,10 +582,10 @@ def crear_video(prompt_type, input_text, selected_voice, musica_file=None):
                             logger.error("Audio compuesto es inválido.")
                             try: final_audio.close()
                             except: pass
-                            final_audio = audio_tts
+                            final_audio = audio_tts  # Revertir a audio_tts si falla
             except Exception as e:
                 logger.warning(f"Error al procesar música de fondo: {str(e)}")
-                final_audio = audio_tts
+                final_audio = audio_tts  # Revertir a audio_tts si falla
 
         # 7. Crear video final
         logger.info("Renderizando video final...")