详解如何使用Python提取视频文件中的音频

import tkinter as tk
from tkinter import messagebox
from tkinter import filedialog
import subprocess
import os


# 单文件
def single_video_mode():
    def choose_single_video():
        video_path = filedialog.askopenfilename()
        video_input.delete(0, tk.END)
        video_input.insert(0, video_path)

    def choose_audio_output():
        audio_output_path = filedialog.asksaveasfilename(defaultextension='.wav')
        audio_output_input.delete(0, tk.END)
        audio_output_input.insert(0, audio_output_path)

    def extract_audio():
        video_path = video_input.get()
        audio_output_path = audio_output_input.get()
        command = ['ffmpeg', '-i', video_path, '-vn', '-acodec', 'pcm_s16le', audio_output_path]
        subprocess.call(command)
        messagebox.showinfo('提取完成', '音频提取完成！')

    root.withdraw()

    single_video_window = tk.Toplevel()
    single_video_window.title('单视频')
    single_video_window.geometry('350x200')

    video_label = tk.Label(single_video_window, text='视频路径:')
    video_label.place(x=32, y=3.5)

    video_input = tk.Entry(single_video_window)
    video_input.place(x=95, y=3.5)

    video_button = tk.Button(single_video_window, text='选择视频', command=choose_single_video, bg="#FFD45E")
    video_button.place(x=248, y=0)

    audio_output_label = tk.Label(single_video_window, text='音频输出路径:')
    audio_output_label.place(x=10, y=53.5)

    audio_output_input = tk.Entry(single_video_window)
    audio_output_input.place(x=95, y=53.5)

    audio_output_button = tk.Button(single_video_window, text='选择路径', command=choose_audio_output, bg="#FFCCBE")
    audio_output_button.place(x=248, y=50)

    start_button = tk.Button(single_video_window, text='开始程序', command=extract_audio, bg="#499C54")
    start_button.place(x=70, y=130)

    exit_button = tk.Button(single_video_window, text='退出程序', command=root.quit, bg="#C75450")
    exit_button.place(x=220, y=130)


# 多文件
def multi_video_mode():
    def choose_videos_path():
        videos_path = filedialog.askdirectory()
        videos_path_input.delete(0, tk.END)
        videos_path_input.insert(0, videos_path)

    def choose_audio_output():
        audio_output_path = filedialog.asksaveasfilename()
        audio_output_input.delete(0, tk.END)
        audio_output_input.insert(0, audio_output_path)

    def extract_audio():
        videos_path = videos_path_input.get()
        audio_output_path = audio_output_input.get()
        for file in os.listdir(videos_path):
            if file.endswith('.mp4'):
                video_path = os.path.join(videos_path, file)
                base_name = os.path.splitext(file)[0]
                audio_path = os.path.join(audio_output_path, base_name + '.wav')
                command = ['ffmpeg', '-i', video_path, '-vn', '-acodec', 'pcm_s16le', audio_path]
                subprocess.call(command)

    root.withdraw()

    multi_video_window = tk.Toplevel()
    multi_video_window.title('多视频')
    multi_video_window.geometry('350x200')

    videos_path_label = tk.Label(multi_video_window, text='视频文件夹路径:')
    videos_path_label.place(x=10, y=3.5)

    videos_path_input = tk.Entry(multi_video_window)
    videos_path_input.place(x=105, y=3.5)

    videos_path_button = tk.Button(multi_video_window, text='选择文件夹', command=choose_videos_path, bg="#FFD45E")
    videos_path_button.place(x=255, y=0)

    audio_output_label = tk.Label(multi_video_window, text='音频保存路径:')
    audio_output_label.place(x=20, y=53.5)

    audio_output_input = tk.Entry(multi_video_window)
    audio_output_input.place(x=105, y=53.5)

    audio_output_button = tk.Button(multi_video_window, text='选择路径', command=choose_audio_output, bg="#FFCCBE")
    audio_output_button.place(x=255, y=50)

    start_button = tk.Button(multi_video_window, text='开始程序', command=extract_audio, bg="#499C54")
    start_button.place(x=70, y=130)

    exit_button = tk.Button(multi_video_window, text='退出程序', command=root.quit, bg="#C75450")
    exit_button.place(x=220, y=130)


root = tk.Tk()
root.title('欢迎使用力江视频中提取音频的工具')
root.geometry('200x100')
label = tk.Label(root, text="欢饮使用力江视频提取音频工具", fg="red")
label.place(x=10, y=10)
single_video_button = tk.Button(root, text='单视频', command=single_video_mode, bg="#857022")
single_video_button.place(x=25, y=50)

multi_video_button = tk.Button(root, text='多视频', command=multi_video_mode, bg="#D3F899")
multi_video_button.place(x=125, y=50)

root.mainloop()

pip install ffmpeg moviepy

import moviepy.editor as mp

def extract_audio(videos_file_path):
    my_clip = mp.VideoFileClip(videos_file_path)
    return my_clip

if __name__ == "__main__":
    file_path = r'./Greatest_art.flv'
    my_clip = extract_audio(file_path)
    my_clip.audio.write_audiofile(f'最伟大的作品.mp3')

# 这是一个示例 Python 脚本。
from moviepy.editor import *
import tkinter as tk
from tkinter import filedialog
 
# 打开视频地址文件，选择提取的存储地址，从视频中提取音频
if __name__ == '__main__':
    # 实例化
    root = tk.Tk()
    root.withdraw()
 
    # 获取文件夹路径
    f_path = filedialog.askopenfilename()
    print('\n获取的文件地址：', f_path)
    v_name = f_path.split('/')[-1].split('.')[0]
    print("\n生成的音频名称：", v_name)
 
    video = VideoFileClip(f_path)
    audio = video.audio
 
    f_path_save = filedialog.askdirectory()
    print('\n存储地址：', f_path_save)
 
    audio.write_audiofile(f_path_save+'/'+v_name+'.mp3')

pip install moviepy
#或者用清华的镜像进行安装（快）
pip install moviepy -i https://pypi.tuna.tsinghua.edu.cn/simple

import os
import moviepy.editor as mp
 
def extract_audio(videos_file_path,audio_file_path):
    my_clip = mp.VideoFileClip(videos_file_path)
    my_clip.audio.write_audiofile(f'{audio_file_path}.mp3')
 
if __name__ == '__main__':
    # 视频路径
    MV_Path = "***"
    # 音频存储路径
    store_path = "***"
    mv_list = os.listdir(MV_Path)
    print(mv_list)
    for name in mv_list:
        para1 = MV_Path+ "\\" + name
        para2 = store_path + "\\" + name[:-4]
        extract_audio(para1,para2)
        print(f"{name}转换完毕！")