How Do I Make an AI Movie Trailer?

Why people make trailers first

A trailer is the cheapest way to show a story exists. Writers use them to pitch, authors to sell a book, filmmakers to test whether an idea holds before committing to the whole thing. A writer preparing one put the use case plainly:

I am going to make a trailer / proof of concept video for a TV pilot I am pitching

That was a question in r/generativeAI, and the same post listed the two requirements that make a trailer harder than it looks: characters that stay consistent throughout, and voices, music and a full edit at the end. Series and film work is the largest area of the community corpus, about 26,000 posts, and trailers sit right at its front door.

The shape of a trailer

Most trailers follow the same three acts, and writing them as acts before you write any shots keeps the result from being a montage:

• The world — calm, wide, a narrator or a single line. Fifteen to twenty-five seconds.
• The disruption — the thing that changes everything. Twenty to thirty seconds.
• The rise — three or four key moments, each shorter than the last, one action per shot.
• The final beat and the title — a last image and the name of the film.

Short shots in the rise are what make a trailer feel like one. A shot that tries to do three things at once — a character runs, turns and fires — will either blur or need several attempts; three single-action shots cut together read faster and cost less.

Cast, look and voice

Keep the cast to two or three characters. On SceneMixer each is drawn once and every shot is matched to that sheet, so the hero in the final beat is the hero from the first. If the story already exists as a project, reuse its cast so the trailer and the film match. Choose the look to fit the genre — filmic realism for a thriller, a game-engine look for science fiction, a painterly or 3D look for an animated film — and remember it is fixed for the project once you continue.

The trailer voice is an off-screen narrator: a character with a voice and no image, described in words — deep, slow and gravelly, for example. Dialogue and sound come out of each segment, so the narrator speaks in the same generation as the picture.

The title, and what to leave out

Generated video does not draw legible text, so do not ask it for the title card. Two ways work: the narrator says the title over the last image, or you download the trailer and add a title card in any video editor. For the poster, the cover art tool paints the title into a key visual instead — see how to make an AI movie poster.

Leave out real films. Fan trailers for existing films, real actors' faces and known characters are refused by the IP check; a trailer for your own story with your own characters is what this is for.

What it costs and how long it takes

A trailer is priced by its seconds like any episode. At the default tier a 90-second trailer is 990 credits including the join, before retakes — plan one or two for the key moment, because trailers have many short shots. On time, measured on SceneMixer over the 30 days to November 6, 2026: the median segment came back in about 4 minutes and the median episode was finished 24 minutes after its first segment started. A trailer is an afternoon, most of it spent on the script.

The full shot-by-shot version, with a trailer script you can adapt, is in making an AI movie trailer; for a pitch specifically, a TV pilot or pitch trailer covers what buyers look for.

Limitations of AI trailers

• No fan trailers: real films, real actors' faces and existing characters are refused.
• On-screen titles and credits are not drawn reliably; add them afterwards or have the narrator speak them.
• Very fast montage with many characters in one frame needs more attempts; keep each shot to one action.
• The site figures are one month of SceneMixer tasks, refreshed monthly; the community count is a keyword approximation.

FAQ

Related: making an AI movie from a script is the next step once the trailer lands, the trailer generator page covers book and game trailers, and the community counts follow the collection method.