python调用外部Aria2多线程加速下载

引自

https://github.com/geekcomputers/Python/blob/master/youtube-downloader%20fast.py

直接参考

# -*- coding: utf-8 -*-
import os
import sys
import subprocess


def fast_youtube_downloader(video_link, threads):
    """ Downloads YouTube videos quickly with parallel threads using aria2c """
    subprocess.call(['youtube-dl',
                    video_link,
                    '--external-downloader', # 调用外部下载工具
                    'aria2c',
                    '--external-downloader-args', # 调用外部下载工具参数
                    '-x' + threads]) # 启用aria2 多个线程，最多启用16个


def main(video_link, threads):
    """ main func """
    fast_youtube_downloader(video_link, threads)


if __name__ == '__main__':
    main(sys.argv[1], sys.argv[2])

注释: youtube-dl 是一种下载工具，不单单可以国外youtube，同样可以下载国内视频如爱奇艺等。