A piezoelectric element comprising a first electrode, a piezoelectric layer which contains lead, zirconium, and titanium, and which is formed above the first electrode, and a second electrode formed above the piezoelectric layer. In one implementation, the method comprises detecting a one shot boundary in each of a first video file and a second video file, determining a first reference point in the first video and a second reference point in second video based on the shot boundary detection and extracting a plurality of features associated with the reference points. The network adapter also transforms a signal received from the microprocessor into a signal compatible with the network protocol and transmits the transformed signal to the network interface.