使用python实现将视频中的音频分离出来

pip install moviepy -i http://pypi.douban.com/simple 

‘''
##从视频中获取音频
from moviepy.editor import VideoFileClip,AudioFileClip,afx
video = VideoFileClip(“Why Don't We-What Am I.mp4”)
audio = video.audio
audio.write_audiofile(‘what am I.mp3')

‘''

import os
from ffmpy import FFmpeg

# 获取文件名称
def getName(video_path):
    return os.path.basename(video_path).split('.')[0]

# 提取并另存为
def run_ffmpeg(video_path: str, audio_path: str, format: str):
    ff = FFmpeg(inputs={video_path: None},
                outputs={audio_path: '-f {} -vn'.format(format)})
    ff.run()
    return audio_path

# 参数接受处理
def extract(video_path: str, tmp_dir: str, ext: str):
    file_name = '.'.join(os.path.basename(video_path).split('.')[0:-1])
    return run_ffmpeg(video_path, os.path.join(tmp_dir, '{}.{}'.format(getName(video_path), ext)), ext)

if __name__ == '__main__':
    root = "D:\\study\\project\\python\\技巧\\提取视频音频\\"
    print(extract(root + '我是不是该安静的走开.mp4', root, 'mp3'))

from moviepy.editor import *

root = "D:\\study\\project\\python\\技巧\\提取视频音频\\"
audio = VideoFileClip(root + "我是不是该安静的走开.mp4").audio
audio.write_audiofile(root + "我是不是该安静的走开.mp3")

from moviepy.editor import *
import os
import filetype
import argparse

# 修改这里啊
root = "C:\\Users\\26590\\Videos\\智慧城市\\"
rootVoice = "C:\\Users\\26590\\Videos\\智慧城市voice\\"
voiceType = "mp3"
videoType = "video/mp4"


# 获取文件名称
def getName(video_name):
    return os.path.basename(video_name).split('.')[0]


# 修改文件后缀例如： C:/dir/a/b.png 需要转为 C:/dir/a/b.jpg  调用函数：trAffter('C:/dir/a/b.png', 'jpg')
def trAffter(path, type):
    a = path.split('/')
    b = a[-1].split('.')
    b[-1] = voiceType
    a[-1] = '.'.join(b)
    return '/'.join(a)


# 提取音频
def extractMp3(video_path):
    print("提取文件：", video_path)
    audio = VideoFileClip(video_path).audio
    # 音频保存的路径
    voice_path = video_path.replace(root, rootVoice)
    print("\t音频保存至：", trAffter(voice_path, voiceType))
    audio.write_audiofile(trAffter(voice_path, voiceType))


# 遍历目录下的所有文件
def getVideoList(path):
    # 是否为文件
    if not os.path.isdir(path):
        ft = filetype.guess(path)
        if ft is not None and ft.mime == videoType:
            extractMp3(path)
        else:
            print(f"跳过文件{path}")
        return
    # 递归遍历
    for dir in os.listdir(path):
        # 音频保存的路径目录不存在新建
        voice_path = path.replace(root, rootVoice)
        if not os.path.exists(voice_path):
            os.makedirs(voice_path)
        getVideoList(os.path.join(path, dir))

# 开始
getVideoList(root)