BS ISO 9642:2020 pdf free.Cinematography Time and control code for 24,25 and 30 frames per second motionpicture film systems Specifications. BS ISO 9642 1 Scope This document specities digital code for mats and modulation methods br motion-picture bum to be used for timing, control, editing and synchronization purposes. This document also specifies the relationship of the codes to the motion...