Update app.py

app.py

@@ -119,7 +119,9 @@ async def generate_subtitle(
     print(f"[Transcribe] 格式: {output_format} | 语言: {language or '自动检测'} | max_chars: {max_chars or '不拆分'}", flush=True)
 
     try:
-        transcribe_options = {"word_timestamps": True, "verbose": True}
+        transcribe_options = {"verbose": True}
+        if max_chars > 0:
+            transcribe_options["word_timestamps"] = True
         if language:
             transcribe_options["language"] = language