传参考音频会报错 Error generating audio: Could not load libtorchcodec.

传参考音频会报错

input: 你好，这是一个测试文本。
voice: example
prompt_wav_path: ./voices/example.wav
prompt_text: reference transcript
Error generating audio: Could not load libtorchcodec. Likely causes:
          1. FFmpeg is not properly installed in your environment. We support
             versions 4, 5, 6, 7, and 8. On Windows, ensure you've installed
             the "full-shared" version which ships DLLs.
          2. The PyTorch version (2.9.1+cu128) is not compatible with
             this version of TorchCodec. Refer to the version compatibility
             table:
             https://github.com/pytorch/torchcodec?tab=readme-ov-file#installing-torchcodec.
          3. Another runtime dependency; see exceptions below.
        The following exceptions were raised as we tried to load libtorchcodec:
        
[start of libtorchcodec loading traceback]
FFmpeg version 8: Could not load this library: /home/bruce/proj/VoxCPM/.venv/lib/python3.10/site-packages/torchcodec/libtorchcodec_core8.so
FFmpeg version 7: Could not load this library: /home/bruce/proj/VoxCPM/.venv/lib/python3.10/site-packages/torchcodec/libtorchcodec_core7.so
FFmpeg version 6: Could not load this library: /home/bruce/proj/VoxCPM/.venv/lib/python3.10/site-packages/torchcodec/libtorchcodec_core6.so
FFmpeg version 5: Could not load this library: /home/bruce/proj/VoxCPM/.venv/lib/python3.10/site-packages/torchcodec/libtorchcodec_core5.so
FFmpeg version 4: Could not load this library: /home/bruce/proj/VoxCPM/.venv/lib/python3.10/site-packages/torchcodec/libtorchcodec_core4.so
[end of libtorchcodec loading traceback].

torchcodec 和ffmpeg都有安装

uv pip show torchcodec    
Name: torchcodec
Version: 0.9.1
Location: /home/bruce/proj/VoxCPM/.venv/lib/python3.10/site-packages
Requires:
Required-by:
(voxcpm) (base) 

ffmpeg -v       
ffmpeg version 4.2.7-0ubuntu0.1 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
  configuration: --prefix=/usr --extra-version=0ubuntu0

Reproduce reference-audio generation with the shown input, prompt_wav_path, PyTorch 2.9.1+cu128, torchcodec 0.9.1, and FFmpeg 4.2.7. Start by checking the TorchCodec and FFmpeg compatibility requirements; done means the example voice generates audio without the libtorchcodec loading error.