【模块】moviepy可以做视频剪辑的模块

moviepy项目

Github地址

文档地址

http://zulko.github.io/moviepy/

安装方式

1	pip install moviepy

中文教程

CSDN博主ucsheep对 moviepy 进行很详尽的教程整理，这里就不再赘述，本人仅对音视频合并的代码做阐述。
点击查看教程

音视频合并

首先将视频和音频文件写入剪切板（内存）

import moviepy.editor as mp

video_clip = mp.VideoFileClip(video_file)
audio_clip = mp.AudioFileClip(audio_file)

指定视频的音轨为 audio_clip

1	final_clip = video_clip.set_audio(audio_clip)

将合并后的文件写入硬盘， threads 参数用于控制线程数

1	final_clip.write_videofile(final_file, threads=4)

记得释放内存

1
2
3

video_clip.close()
audio_clip.close()
final_clip.close()

封装成类

import moviepy.editor as mp
import os
from multiprocessing import cpu_count

class Concat(object):
    def __init__(self, video, audio, threads: int = -1):
        _, self.video_name = os.path.split(video)
        self.video_clip = mp.VideoFileClip(video)
        self.audio_clip = mp.AudioFileClip(audio)
        self.final_clip = self.video_clip.set_audio(self.audio_clip)
        if threads == -1:
            self.threads = cpu_count()
        else:
            self.threads = threads

    def save(self, path="./"):
        video_file = os.path.join(path, self.video_name)
        self.final_clip.write_videofile(video_file, threads=self.threads)

    def close(self):
        self.video_clip.close()
        self.audio_clip.close()
        self.final_clip.close()

    def __enter__(self):
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        self.close()

if __name__ == '__main__':
    with Concat(video="./video_1.mp4", audio="./audio_1.mp4") as c:
        c.save("./save/1.mp4")