Update app.py

app.py

@@ -96,7 +96,7 @@ class App:
             dd_model = gr.Dropdown(choices=self.whisper_inf.available_models, value=whisper_params["model_size"],label="Model", info="Larger models will increase the quality of the transcription, but reduce performance")
             dd_lang = gr.Dropdown(choices=["Automatic Detection"] + self.whisper_inf.available_langs,value=whisper_params["lang"], label="Language", info="If the language is known upfront, always set it manually")
             #dd_file_format = gr.Dropdown(choices=["SRT", "WebVTT", "txt"], value="SRT", label="File Format")
-            dd_file_format = gr.Dropdown(choices=["SRT", "txt"], value="txt", label="Output format")
+            dd_file_format = gr.Dropdown(choices=["SRT", "txt"], value="SRT", label="Output format")
             
         with gr.Row():
             cb_timestamp = gr.Checkbox(value=whisper_params["add_timestamp"], label="Add timestamp to output file",interactive=True)