A script which will download all videos hosted on PyVideos till date.

pyviddown.py

'''
Author  :   Karan 
For the love of pyvideo
'''
from __future__ import unicode_literals
import os,json,youtube_dl


def walker():
	a=[]
	for root,dirs,files in os.walk(os.getcwd()):
		for file in files:
			try:
				if file.endswith(".json"):
					#print(os.path.join(root,file))
					with open(os.path.join(root,file)) as data_file:
						try:
							i = (json.load(data_file)['source_url'])
							if len(i)>1:
								a.append(i)
						except KeyError:
							pass

			except:
				continue
	return a

def downloader(a):
	ydl = youtube_dl.YoutubeDL({'outtmpl': '%(id)s%(ext)s'})
	with ydl:
		for i in a:
			try:
				ydl.extract_info(i,download=True)
			except (youtube_dl.MaxDownloadsReached , youtube_dl.DownloadError):
				continue

def main():
	url_list = walker()
	downloader(url_list)

if __name__ == '__main__':
	main()