使用Python PyDub分割音频时遇文件加载失败问题求解决方案

问题背景 #

需要批量处理指定文件夹中的音频文件，提取每个音频的前30秒并导出到原文件所在目录。程序执行到AudioSegment.from_file(full_path)时失败，尝试调整路径拼接方式（如改用os.path.join）仍未解决。

初始代码 #

from pydub import AudioSegment
import os
folder_number = 1
folder_number_str = str(folder_number)
folder_type = 'short/'
audio_file_dir = os.listdir('for_analysis/' + folder_type + folder_number_str)[0]
audio_dir = 'for_analysis/' + folder_type + folder_number_str + '/'
print(audio_dir)
print(audio_file_dir)
length = len(audio_dir)
file_format = audio_dir[length - 3:]
full_path = audio_dir + audio_file_dir
print(full_path)
sound = AudioSegment.from_file(full_path)
print(sound)
first_cut_point = (1*00 + 0) * 1000
last_cut_point = (1*00 + 30) * 1000

sound_clip = sound[first_cut_point:last_cut_point]

sound_clip.export(os.path.join(audio_dir, 'CUT-' + audio_file_dir), format=file_format)

报错情况 #

程序在执行AudioSegment.from_file(full_path)时抛出异常（控制台截图显示相关错误）。

解决方法与优化代码 #

通过重新安装FFmpeg解决了AudioSegment.from_file的执行问题，同时优化代码为批量处理1到49号文件夹中的音频文件：

from pydub import AudioSegment
import os

folder_number = 1
while folder_number < 50:
    folder_number_str = str(folder_number)
    folder_type = 'short/'
    audio_file_dir = os.listdir('for_analysis/' + folder_type + folder_number_str)[0]
    audio_dir = 'for_analysis/' + folder_type + folder_number_str + '/'
    print(audio_dir)
    print(audio_file_dir)
    length = len(audio_dir)
    file_format = audio_dir[length - 3:]
    full_path = audio_dir + audio_file_dir
    print(full_path)
    sound = AudioSegment.from_file(full_path)
    print(sound)
    first_cut_point = (1*00 + 0) * 1000
    last_cut_point = (1*00 + 30) * 1000

    sound_clip = sound[first_cut_point:last_cut_point]

    sound_clip.export(os.path.join(audio_dir, 'CUT-' + audio_file_dir))
    folder_number = folder_number + 1

内容的提问来源于stack exchange，提问作者Elliott Mitch