def convert_image_unsafe(source, dest, out_format, run_as_root=False):
 _convert_image(source, dest, None, out_format, run_as_root)

def convert_image_unsafe ( source , dest , out_format , run_as_root = False ) : _convert_image ( source , dest , None , out_format , run_as_root )
convert image to other format .