video_format.add_option('-f', '--format',
- action='store', dest='format', metavar='FORMAT',
+ action='store', dest='format', metavar='FORMAT', default='best',
help='video format code, specifiy the order of preference using slashes: "-f 22/17/18". "-f mp4" and "-f flv" are also supported')
video_format.add_option('--all-formats',
action='store_const', dest='format', help='download all available video formats', const='all')