FLV download script

#this is a Python wrapper of flvcd.com to  facilitate FLV video download

from urllib import FancyURLopener, urlopen, urlencode
import os, re, threading, time

def get(url, fdir):
 '''down one file'''
 #print '---', url, fdir
 os.system('wget -t 0 -c -O "%s" -U ie %s'%(fdir,url))

def getall(lst_url, dir, num_threads=3):
 '''down all that belong to one video in to dir;
 @param n: number of threads;
 '''
 
 try:
  os.makedirs(dir)
 except:
  pass
 
 for i,url in enumerate(lst_url):
  fdir = os.path.join(dir, '%02d.flv'%i)
  if num_threads:
   t = threading.Thread(target=get, args=(url, fdir))
   t.start()
   while threading.activeCount() > num_threads:
    time.sleep(1)
  else:
   get(url, fdir)

def down(url, dir, n=3):
 '''download the video with given one url and dir to save'''
 data = {'kw': url,
  'flag': '',
  'format': ''
  }
 
 f = urlopen('http://www.flvcd.com/parse.php?' + urlencode(data))
 lst_all = re.findall('> ( http://.*?)</a>' , f.read())
 f.close()
 getall(lst_all, dir, n)

def GetClipboardUrl():
 try:
  import win32con, ctypes  
 except:
  return ''

 OpenClipboard = ctypes.windll.user32.OpenClipboard
 GetClipboardData = ctypes.windll.user32.GetClipboardData
 CloseClipboard = ctypes.windll.user32.CloseClipboard
 GlobalLock = ctypes.windll.kernel32.GlobalLock
 GlobalUnlock = ctypes.windll.kernel32.GlobalUnlock
 url=''
 if OpenClipboard(0):  
     hClipMem = GetClipboardData(win32con.CF_TEXT)  
     GlobalLock.restype = ctypes.c_char_p  
     url = GlobalLock(hClipMem)  
     GlobalUnlock(hClipMem)  
     CloseClipboard()
 return url

if __name__ == '__main__':
 url = GetClipboardUrl()
 print '---', url
 
 dir = raw_input('dir:')
 print '===', dir
 os.system('title %s'%dir)
 
 down(url, dir, 5)