https://www.nfsa.gov.au/sites/default/files/2025-02/Colour%20TV%20Mega%20Menu%203%20TVs_1000x745%20px.jpg
Control track
In film, a supplementary track recording signals which control the level, expansion or compression, choice of loudspeaker, etc. in the reproduction of multiple sound records of a film.
In video, the electronic sprocket holes recorded on videotape to guide the heads and control tape transport during playback.
References
Kodak: A Concise Glossary for the Non-Technician
The National Film and Sound Archive of Australia acknowledges Australia’s Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of the land on which we work and live and gives respect to their Elders both past and present.