GB/T 4643-2002
AbolishedCinematography--16mm negative photographic sound record on motion-picture film--Position and dimensions
16mm电影负片光学声迹的位置和尺寸
Application Summary AI generated
GB/T 4643-2002 specifies the exact position and dimensional requirements for 16mm negative photographic sound records on motion-picture film. It is applied in the cinematography industry during the production and post-production of 16mm films, ensuring that optical soundtracks are correctly aligned and sized for consistent playback in cinema projection systems.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.