#3811 RuntimeError: {'code': 400, 'message': '未指定参考音频且接口无预设'}

This error occurs because the voice cloning feature (e.g., using a "clone" role in F5-TTS, GPT-SoVITS, or CosyVoice) requires a reference audio clip, but the system cannot find one or the TTS service is not properly configured with a default voice.

Solution Steps:

1. Check your TTS configuration: Ensure you have correctly deployed and started the external TTS service (e.g., F5-TTS, GPT-SoVITS API). The service must be running, and its API address must be correctly entered in Menu -> Translation Settings -> [Your TTS Channel] Settings Panel.

2. Verify the reference audio for cloning: If you selected a clone role, the software automatically uses the original audio segment corresponding to each subtitle as the reference. This requires the subtitle duration to be between 3 to 10 seconds.

   • Go to Menu -> Tools -> Advanced Options -> Speech Recognition Parameters.
   • Set Minimum Speech Duration (ms) to 3000.
   • Set Maximum Speech Duration (s) to 10.
   • Enable Whisper Pre-segment Audio? and Merge Short Subtitles to Adjacent.
3. Ensure the TTS service has a default voice: Some TTS APIs require a pre-configured default voice model if no specific reference audio is sent. Check the documentation of your specific TTS service (F5-TTS, CosyVoice, etc.) to ensure it is set up correctly.
4. If not using cloning, change the voice role: If you do not intend to clone the original voice, simply select a standard, non-clone voice role from the dropdown list in the main interface under "Voice Role".

Common causes for this specific error with F5-TTS/CosyVoice:

• The external TTS API service is not running.
• The API address in pyVideoTrans settings is incorrect (e.g., wrong IP or port).
• The TTS service itself lacks a pre-loaded model for the target language.

Please refer to the relevant documentation:

• How to use the original video's timbre for dubbing (Voice Cloning)
• F5-TTS API Common Errors
• Using GPT-SoVITS for Dubbing
• Using CosyVoice3 in the video translation software