help='number downloaded files starting from 00000',default=False)
filesystem.add_option('-o','--output',
dest='outtmpl',metavar='TEMPLATE',help='output filename template. Use %(stitle)s to get the title, %(uploader)s for the uploader name, %(autonumber)s to get an automatically incremented number, %(ext)s for the filename extension, %(upload_date)s for the upload date (YYYYMMDD), and %% for a literal percent. Use - to output to stdout.')
dest='outtmpl',metavar='TEMPLATE',help='output filename template. Use %(stitle)s to get the title, %(uploader)s for the uploader name, %(autonumber)s to get an automatically incremented number, %(ext)s for the filename extension, %(upload_date)s for the upload date (YYYYMMDD), %(provider)s for the provider (youtube, metacafe, etc), %(id)s for the video id and %% for a literal percent. Use - to output to stdout.')
filesystem.add_option('-a','--batch-file',
dest='batchfile',metavar='FILE',help='file containing URLs to download (\'-\' for stdin)')