MOS, which stands for "Mit Out Sound" (or sometimes "Missing Out Sound"), is a common film industry term for scenes that are filmed without recording sound. This happens when the audio will be added later in post-production. For example, this might be used during action sequences, distant shots where dialog isn't important, or when filming conditions make good sound recording impossible. The term's unusual spelling comes from a story about a German director in Hollywood who would write "Mit Out Sound" on silent takes, and the abbreviation stuck in the industry.
Directed multiple MOS sequences for action-heavy commercial spots
Coordinated MOS shoots in high-noise urban environments
Managed sound design for 20+ MOS scenes in feature film production
Typical job title: "Film Production Professionals"
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Q: How do you plan and budget for MOS sequences in a production?
Expected Answer: A senior professional should explain how to evaluate which scenes should be shot MOS, considering factors like budget, schedule, location constraints, and post-production requirements. They should discuss how this affects crew scheduling and post-production planning.
Q: What considerations do you take into account when scheduling MOS shots versus sync sound?
Expected Answer: Should demonstrate knowledge of production efficiency, explaining how MOS shots can speed up filming by eliminating sound concerns, but may increase post-production costs. Should discuss balancing these factors in production planning.
Q: How do you communicate MOS requirements to different departments?
Expected Answer: Should explain how to coordinate between sound, camera, and post-production departments, including proper documentation and scheduling practices for MOS scenes.
Q: What are the common challenges in post-production for MOS footage?
Expected Answer: Should discuss planning for sound design, foley work, and ADR (re-recording dialogue), and how to prepare during shooting to make post-production more efficient.
Q: What does MOS mean and when is it typically used?
Expected Answer: Should be able to explain that MOS means filming without sound and list common situations where it's used, such as action sequences or shots where original sound won't be needed.
Q: How do you mark MOS shots in production paperwork?
Expected Answer: Should know basic production paperwork procedures, including how to mark MOS shots on shot lists, daily reports, and slate/clapperboard.