在线视频爬虫与百度云盘同步服务及其服务器架设(一)

在线视频爬虫下载工具youtube_dl安装及其使用

• github地址 : youtube_dl

利用python管理工具pip安装

pip install --upgrade youtube-dl

youtube_dl常用命令行介绍

-f, --format FORMAT              Video format code, see the "FORMAT
                                 SELECTION" for all the info

--merge-output-format FORMAT     If a merge is required (e.g.
                                 bestvideo+bestaudio), output to given
                                 container format. One of mkv, mp4, ogg,
                                 webm, flv. Ignored if no merge is required

-F, --list-formats               List all available formats of requested
                                 videos

-a, --batch-file FILE            File containing URLs to download ('-' for
                                 stdin)

-o, --output TEMPLATE            Output filename template, see the "OUTPUT
                                 TEMPLATE" for all the info    

--list-extractors                List all supported extractors

输出文件名模板

Note: on Windows you may need to use double quotes instead of single.

# Download YouTube playlist videos in separate directory indexed by video order in a playlist
$ youtube-dl -o '%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s' https://www.youtube.com/playlist?list=PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re

# Download all playlists of YouTube channel/user keeping each playlist in separate directory:
$ youtube-dl -o '%(uploader)s/%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s' https://www.youtube.com/user/TheLinuxFoundation/playlists

# Download Udemy course keeping each chapter in separate directory under MyVideos directory in your home
$ youtube-dl -u user -p password -o '~/MyVideos/%(playlist)s/%(chapter_number)s - %(chapter)s/%(title)s.%(ext)s' https://www.udemy.com/java-tutorial/

# Download entire series season keeping each series and each season in separate directory under C:/MyVideos
$ youtube-dl -o "C:/MyVideos/%(series)s/%(season_number)s - %(season)s/%(episode_number)s - %(episode)s.%(ext)s" http://videomore.ru/kino_v_detalayah/5_sezon/367617

输出文件格式模板

网站上视频具有的下载格式可以通过youtube-dl -F查看可下载视频格式列表

youtube-dl可以根据参数配置来确定视频下载格式

Note: on Windows you may need to use double quotes instead of single.

# Download best mp4 format available or any other best if no mp4 available
$ youtube-dl -f 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best'

# Download best format available but not better that 480p
$ youtube-dl -f 'bestvideo[height<=480]+bestaudio/best[height<=480]'

# Download best video only format but no bigger than 50 MB
$ youtube-dl -f 'best[filesize<50M]'

# Download best format available via direct link over HTTP/HTTPS protocol
$ youtube-dl -f '(bestvideo+bestaudio/best)[protocol^=http]'

# Download the best video format and the best audio format without merging them
$ youtube-dl -f 'bestvideo,bestaudio' -o '%(title)s.f%(format_id)s.%(ext)s'

开发者模式使用

youtube_dl在python代码中使用方式

from __future__ import unicode_literals ## for python2
import youtube_dl

ydl_opts = {}
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    ydl.download(['http://www.youtube.com/watch?v=BaW_jenozKc'])

ydl_opts 配置可以在YoutubeDL.py中找到,for example

ydl_opts = {
    ##Download best format available but not better that 720p
    'format': 'bestvideo[height<=720]+worstaudio[ext=m4a]/best[height<=720][ext=mp4]',
    'merge_output_format': 'mp4',
    'outtmpl': './download/%(title)s.%(ext)s',
    #     # 'postprocessors': [{
    #     #    'key': 'FFmpegExtractAudio',
    #     #    'preferredcodec': 'mp3',
    #     #    'preferredquality': '192',
    #     # }],
    #     # 'logger': MyLogger(),
    #     #'progress_hooks': [my_hook],
}

百度云盘同步工具bypy安装及其使用

• github地址 : bypy

利用pip安装bypy

• 通过pip安装pip install bypy

bypy对百度云盘授权

第一次使用需要对百度云进行授权,运行任意命令即可进入百度云盘授权过程,通过给出url得到百度云盘的授权码.

如果需要重置授权,运行bypy -c即可进入重置授权

bypy命令行使用

显示在云盘（程序的）根目录下文件列表：bypy list

把当前目录同步到云盘：bypy syncup or bypy upload

把云盘内容同步到本地来：bypy syncdown or bypy downdir /

比较本地当前目录和云盘（程序的）根目录：bypy compare

bypy代码运行
在python代码中运行bypy

import bypy
        by = bypy.ByPy()
            by.syncup(fromdir,todir)