ISO 4241:2019
ISO 4241:2019 Cinematography - Projection film leader (time-based), trailer and cue marks - Specifications
standard by International Organization for Standardization, 08/01/2019
Full Description
This document specifies the makeup or assembly of time-based leaders and cue marks for 70 mm, 35 mm, and 16 mm motion-picture release prints.
NOTE Extraneous materials are dealt with in Annex A.