Methods, apparatus and articles of manufacture to monitor streaming media content are disclosed. Data frames can be processed to produce an animation representation that represents the data frames. Data is represented in data time segments of the full cycle encoded signal and no data time segment has more than one cycle of an encoding signal. A combination of stationary and movable aperture stop plates changes over a photographic light path in a selected one of small, middle and large aperture stop states. A combination comprising a facemask and a fastening element is also disclosed. The data structure is then used during logic design verification.