AI promo video maker

The arc, and where each role sits

Openers name the thing or ask the question: intro, hook_question, logo_bumper, agenda. Body roles carry the middle and there are 42 of them, from problem and solution through showcase, feature_list, stat, comparison, testimonial and offer. Closers end it: cta when there is a real action, outro when a hard sell would jar, contact for a service business. A promo must end on one of those three, and the same role never runs twice in a row.

The motion rule

Every scene layout is tagged high, medium or low motion. The promo director is instructed that at least half its scenes must be high motion, counting numbers, building charts, animated interface, the product actually moving, and that two low motion scenes may never sit back to back. That single constraint is what separates a promo from a deck with music over it.

Copy has to be short or the whole thing collapses

The headline on a statement, hook, intro, offer, stat or closing scene is 2 to 5 words. A supporting line is under 8. Narration is 5 to 8 words a scene unless a scene genuinely needs to explain something, in which case its duration grows to match. Big short type reads as a cut ad. Sentences read as a slideshow, which is the failure mode this is written to avoid.

Brand presence without a logo slide

Rather than bookending with a logo card, a promo can carry a small wordmark or logo in the bottom left through the middle scenes, fading in after the opener and out before the closer at about 72 percent opacity. Hero text beats are also painted on a full brand colour field, so the brand reads continuously instead of only at the ends.

How it works, in three steps

1. Step 1

   Name the audience, not just the product

   Who is watching decides the tone, the voice style and half the copy. Office managers and founders want different sentences about the same coffee.

2. Step 2

   Give it the one number you actually have

   The director is told never to invent a figure. One real number turns a claim scene into a stat scene, which is a high motion beat.

3. Step 3

   Write the last line yourself

   Put the exact closing sentence in the brief. It becomes the closing scene copy and the final spoken line, and it is the part most worth controlling.

The full walkthrough with screenshots is in the guide Make a promo video with AI voiceover.

Limits worth knowing

• A promo scene runs 2.5 to 4 seconds by default, so a long paragraph of narration will stretch a scene rather than fit it.
• Roles that need something you did not supply are not offered at all: showcase and ui_demo require an uploaded screenshot.
• The comparison role is instructed to keep the rival generic, so it will not name a competitor for you.
• Exports over 30 seconds, or any export needing new narration synthesised, spend one credit.

Questions people ask

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