Update app.py

app.py

@@ -549,10 +549,10 @@ def generate_video():
         lines=best[0]
         lang=best[1]
         length, audio_path = audio_func(0, lines, lang)
-        if not duration or not audio_path:
+        if not length or not audio_path:
             print("Failed to generate audio.")
 
-        scale=length/length
+        scale=length/total
         
         # Now proceed with video generation using 'data'
         print(json.dumps(data, indent=2))  # For debugging