Computer software for use in connection with the measurement and analysis of position, movement and of shape, for use in the fields of biomechanics, entertainment, and engineering; optical and mechanical devices for marking and measuring position, namely, optoelectronic and electro-optical controllers and monitors; optical and electronic data recorders and printers; electronic video-to-digital signal converters; electronic data input devices for use with digital computers, namely units for inputting data regarding the position, movement and shape of objects; electronic interface units for providing digital data signals from video signals and/or forceplate signals and/or electromyography signals; blank magnetic and digital data storage data carriers; blank magnetic tapes and discs all for use with computers; parts for all the foregoing, all for use in the measurement of position, movement and shape of animate and inanimate objects; equipment for use in the measurement and analysis of position and movement of cameras, and position, movement and shape of objects, marketed to the entertainment, virtual environment and ergonomic studies, product package, automotive and architectural design industries; namely, downloadable encoded computer software programs and encoded computer software programs contained on floppy discs, hard discs, CD-ROMs, digital video discs, laser discs and compact discs for computers for use in connection with the measurement and analysis of position and movement of cameras and position, movement and the shape of objects