automatically downloads nptel videos from youtube

downloadNPTEL

from __future__ import unicode_literals
import sys
import urllib.request 


import youtube_dl


class MyLogger(object):
    def debug(self, msg):
        pass

    def warning(self, msg):
        pass

    def error(self, msg):
        print(msg)


def my_hook(d):
    if d['status'] == 'finished':
        print('Done downloading, now converting ...')

ydl_opts = {
    'format': '18',
    
    'logger': MyLogger(),
    'progress_hooks': [my_hook],
}




Urls = sys.stdin.read()
urls = list(filter(None, Urls.split("\n")))
for url in urls:
	response = urllib.request.urlopen(url)
	print(url)
	webContent = response.read().decode("iso-8859-1")
	s_i = webContent.find("v/", webContent.find("youtube.com"))
	e_i = webContent.find("?", s_i)
	youtube_url = "youtube.com/watch?v=" + webContent[s_i+2:e_i]
	with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        	ydl.download([youtube_url])