python处理音频

1、安装pydub

直接pip install pydub就可以了

2、安装ffmpeg

下载地址：[https://ffmpeg.zeranoe.com/builds/](https://ffmpeg.zeranoe.com/builds/)

                解压到任意目录下，再将bin文件夹添加到系统环境变量的path中

3、处理音频

file_name =r"123.mp3"

sound = pydub.AudioSegment.from_mp3(file_name)

start_time ="0:30"

stop_time ="0:47"

print("time:", start_time, "~", stop_time)

start_time = (int(start_time.split(':')[0])*60+int(start_time.split(':')[1]))*1000

stop_time = (int(stop_time.split(':')[0])*60+int(stop_time.split(':')[1]))*1000

print("ms:", start_time, "~", stop_time)

word = sound[start_time:stop_time]

save_name ="word111"+file_name[6:] +"." + file_name.split(".")[1]

print(save_name)

word.export(save_name, format=file_name.split(".")[1], tags={'artist':'AppLeU0', 'album': save_name[:-4]})

运行以后可能会报错，找不到文件。可以在代码里添加一条：

pydub.AudioSegment.ffmpeg = r"D:\ffmpeg-20191113-a7245ad-win64-static\bin\ffmpeg"

给pydub设置ffmpeg的绝对路径。找了好久才找到原因。有不同意见在评论区评论。