What's the best way to incorporate sound design into an AI film treatment document, and are there any tools or templates that can help me make the case for including audio direction alongside the visual elements?

Write sound as its own locked module inside the treatment document — per-emotional-stage audio rules co-written with the camera and lighting rules — because an AI agent cannot infer audio logic from visual prompts alone. One documented AI horror short encoded a full audio architecture module into a five-stage director's bible, and the invideo agent applied it autonomously across the whole film.

Structure the audio module around your film's emotional stages, not around scenes. The documented approach that works: build the treatment around escalating emotional stages — one production used five, extracted from James Wan's body of work — and lock camera, lighting, AND sound rules together at each stage, so the invideo agent reads them as one integrated system rather than a visual spec with audio bolted on. Add a "what never to do" section per stage; the production that did this found it made the invideo agent's autonomous decisions significantly easier. Anchor the module in the director's philosophy you're encoding — for that horror bible it was "fear lives in what the audience cannot fully see, cannot fully hear, and cannot fully understand," which turns sound into a structural rule (what the audience hears before what they see) instead of decoration.

Write sound logic into asset briefs too, not just scene direction. The same production specified a prop as "hard material, so it makes a horrible sound when it falls" — a one-line diegetic sound directive inside an image-generation brief that keeps audio reasoning attached to objects, not just moments. Your template per stage: what the audience hears, where sound precedes image, where silence is mandatory, and the never-do list.

Load the document once and let it govern every shot. invideo is an agentic video creation tool, and the invideo agent reads a treatment document at project start and holds every directive — including the audio module — across every shot without re-prompting. That persistence is the practical reason sound belongs in the doc rather than in a separate sound-department file: a directive the invideo agent isn't holding is a directive it can't apply or check.

The strongest case you can make for audio direction in the doc is the rough-cut critique it enables. After assembly, upload your cut back to the invideo agent with an open "what's working, what's not" prompt — it checks pacing, SFX, and emotional register against the loaded document. In the documented production it caught the entity's reveal shot running at the wrong emotional stage register — Stage D instead of Stage C — a mismatch the director had missed entirely. That catch is only possible because the sound-and-register framework was pre-loaded; audio layered on after generation has no reference framework for the invideo agent to evaluate against, which is exactly where the common add-audio-in-the-edit workflow breaks down at scale.

For the budget side of your case: the production that ran this five-stage bible delivered a ~90-second film in 2 days for $870 (4,100 credits, roughly 400 video generations and 30 image generations) — the audio architecture lived in the same document the invideo agent was already holding, so the sound direction cost nothing extra to enforce.

Watch some of these to see what works for you:

one thing that my doc covers that I don't think is very common in treatment docs is this section on sound. There's a full audio architecture module here, because half of what makes one's films land is in the image. It's what you hear before what you actually see.

— the director of a documented AI horror short film