Techniques are provided enabling users to search for, select andor watch an infomercial of interest including commercials, advertisements, and the like from a recorded stream. A histogram of a frequency with respect to brightness information of the picture image signal is created. The metal billet is heated to a temperature suitable for press working and is set into a container for press forming. The position of the support portion can be adjusted so that the upper surface of the support portion is arranged in parallel horizontal alignment with the ground surface.