Since a continuous movie effect is created at 24 frames/second, a TV or a movie screen capable of displaying 48 frames/second can alternate the frames from two different programs, so that the frames of each program will have the rate of 24 frames/second. Two viewers wearing eye-pieces with phase locking strobe, running at 24 frames/second, can each lock on different set of alternating frames, and block the other set. The strobe is synchronized with the display, so that each of the viewers gets to see only the 24 frames/sec that is relevant to the program that viewer is watching. One embodiment allows other viewer to view another program at 24 frames/second. Each viewer also has a separate audio feed associated with his or her viewing program.