MOS (filmmaking)

Filmmaking term for media recorded without synchronized audio

MOS is a standard filmmaking jargon acronym used in production reports to indicate an associated film segment has no synchronous audio track. Omitting sound recording from a particular shot can save time and relieve the film crew of certain requirements, such as remaining silent during a take, and thus MOS takes are common on contemporary film shoots, mostly when the subjects of the take are not speaking or otherwise generating useful sound.