Python实现视频转换为音频的方法详解

from moviepy.editor import *
import os

def video_to_audio(video_file, output_folder):
    video = VideoFileClip(video_file)
    audio_file = os.path.join(output_folder, os.path.splitext(os.path.basename(video_file))[0] + ".mp3")
    audio = video.audio
    audio.write_audiofile(audio_file)

    return audio_file

def main():
    video_file = "D:/200-Life/220-Money/223-小红书/舍长语录视频集合/第2集 阴阳五行：“东西方”一直明争暗斗，导致的人体健康和世界格局.mp4"
    output_folder = "D:/200-Life/220-Money/223-小红书/舍长语录视频集合"

    if not os.path.exists(output_folder):
        os.makedirs(output_folder)

    audio_file = video_to_audio(video_file, output_folder)
    print("音频文件已保存到:", audio_file)

if __name__ == "__main__":
    main()

    video_file = "D:/200-Life/220-Money/223-小红书/舍长语录视频集合/第2集 阴阳五行：“东西方”一直明争暗斗，导致的人体健康和世界格局.mp4"
    output_folder = "D:/200-Life/220-Money/223-小红书/舍长语录视频集合"

pip install movipy

#!/usr/bin/env python3

import sys
import time
import os
# import pipes
from moviepy import *

# 设置默认的比特率
DEFAULT_BITRATE = '32k'

def convert_to_mp3(filename, bitrate):
    clip = VideoFileClip(filename)
    clip.audio.write_audiofile(filename[:-4] + " bitrate" + bitrate + ".mp3", bitrate=bitrate)
    clip.close()

def main():
	if len(sys.argv) <2 or len(sys.argv) > 3:
		print('command usage: python3 video_to_audio.py FileName')
		exit(1)
	else:
		filePath = sys.argv[1]
		bitrate = sys.argv[2] if len(sys.argv) == 3 else DEFAULT_BITRATE
		# check if the specified file exists or not
		if os.path.exists(filePath):
			print("file found! bitrate={bitrate}")
			# convert video to audio
			convert_to_mp3(filePath, bitrate=bitrate)
		else: 
			print("no file: {filePath}")
		# time.sleep(1)
		
# install ffmpeg and/or lame if you get an error saying that the program is currently not installed 
if __name__ == '__main__':
	main()

python video_to_audio.py "video.mp4" 16k