运行此 python 脚本以导入语音到文本模型时遇到运行时错误

如何解决运行此 python 脚本以导入语音到文本模型时遇到运行时错误

import nemo
import ffmpeg
import nemo.collections.asr as nemo_asr
model = nemo_asr.models.EncDecCTCModel.from_pretrained(model_name="QuartzNet15x5Base-En")
files=["D:\archive\medical speech transcription and intent\Medical Speech,Transcription,and Intent\recordings\test\1249120_1853182_11719913.wav"]
transcription=model.transcribe(paths2audio_files=files)

我收到警告和运行时错误

警告：警告（“找不到 ffmpeg 或 avconv - 默认为 ffmpeg，但可能不起作用”，RuntimeWarning）

运行时错误： 已尝试在开始之前启动一个新进程 当前进程已完成其引导阶段。

    This probably means that you are not using fork to start your
    child processes and you have forgotten to use the proper idiom
    in the main module:

        if __name__ == '__main__':
            freeze_support()
            ...

    The "freeze_support()" line can be omitted if the program
    is not going to be frozen to produce an executable.

任何有关如何进行的帮助将不胜感激！