remove-logo=/path/to/logo_bitmap_file_name.pgm　Fraternity7

remove-logo=/path/to/logo_bitmap_file_name.pgm
    Suppresses  a  TV station logo, using a PGM or PPM image file to
    determine which pixels comprise the logo.  The width and height
    of  the  image  file  must match those of the video stream being
    processed.  Uses the filter image and a circular blur  algorithm
    to remove the logo.

   /path/to/logo_bitmap_file_name.pgm
     [path] + filename of the filter image.