https://www.nfsa.gov.au/sites/default/files/2025-02/Colour%20TV%20Mega%20Menu%203%20TVs_1000x745%20px.jpg
NG
Literally means ‘no good’, faulty in some way 1. Usually in reference to the film image or sound quality (technical), or equipment, etc.
References
1 British Standard Glossary of Terms used in the Motion Picture Industry
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.