What deliverables are typically produced for a feature film's audio post, including file formats and structures?

• A. Final mix and stems (dialogue, music, SFX), M&E stems; flattened mixes; BWF/WAV or AIFF at 48k/24-bit; metadata/XML/AAF for timeline integration.
• B. Only the final stereo mix in MP3.
• C. A rough cut video with no audio.
• D. A set of raw recordings from set.

Answer: (A)

Feature film audio post deliverables are a complete package that supports final playback, localization, and future re-conform, all tied to the picture timeline. The core items include the final mix and stems—separating dialogue, music, and sound effects—along with M&E (music and effects) stems for international dubbing. Flattened mixes may be provided as reference or for quick access, but the detailed stems remain essential. All of this is delivered in high-fidelity formats such as BWF/WAV or AIFF at 48 kHz and 24-bit to preserve fidelity for cinema playback. Metadata and timeline integration are also included, typically via XML or AAF, so the audio can be re-integrated or re-edited to the picture if needed. Those elements cover the needs of delivery, localization, and archival purposes, ensuring both quality and workflow compatibility.

Other options don’t fit typical post workflows: MP3 is a lossy format not suitable for professional cinema delivery; a rough cut video with no audio misses the essential sound components; and raw on-set recordings are production sources, not the finalized post-produced deliverables.