Python:本地音/视频裁剪、合并

        调用moviepy库对本地音/视频进行裁剪、音频提取，还可实现视频添加音频等操作

from moviepy import editor

def audio_clip(audiofilename,start,stop,outaudioname):
    """导入本地音频文件，对音频裁剪后保存"""
    audio = editor.AudioFileClip(audiofilename)
    clip_audio = audio.subclip(start,stop)
    clip_audio.write_audiofile(outaudioname)

def video_clip(filename, start, stop, outvideoname, aduio_extract = True, outaudioname = 'out.mp3'):
    """导入本地视频，对视频进行裁剪保存，并可以选择是否提取并保存裁剪视频的音频文件"""
    #打开本地视频
    video = editor.VideoFileClip(filename)

    #裁剪视频,将裁剪后的视频存储在本地
    new_video = video.subclip(start,stop)
    new_video.write_videofile(outvideoname)

    if aduio_extract:
        #提取视频中的音频，并进行存储
        clip_video = editor.VideoFileClip(outvideoname)
        clip_video.audio.write_audiofile(outaudioname)

def video_addaudio(videoname,audioname,outvideoname):
    """给视频文件添加音频"""
    #打开本地音、视频文件
    video = editor.VideoFileClip(videoname)
    #移除视频中的音频文件，也可不移除，添加新音频时会覆盖
    video = video.without_audio() 
    audio = editor.AudioFileClip(audioname)

    #将视频和音频文件合并
    video_audio = video.set_audio(audio)
    video_audio.write_videofile(outvideoname)

if __name__ == "__main__":
    # video_clip(r'D:\work\11\bd.mp4',(0,0),(2,0),'out.mp4')
    # audio_clip('audio.mp3', 26, 46, 'bg20.mp3')
    video_addaudio('tq.mp4', 'bg.mp3', 'bg_video.mp4')