Why each section exists
01 — Product one-liner
If it cannot be written in one sentence, the video cannot argue it.
A launch film is an argument to a specific buyer that a specific problem is now solved in a specific way. If the one-liner takes three sentences, the video will try to make three arguments — and will make none of them well. Writing the one-liner forces the clarity the video needs before production starts, not after.
The most common brief failure is "we want to show what the product can do." That is not a brief — it is a request for a walkthrough. A launch film needs a thesis.
02 — The one feature to prove
One feature, credibly proven, outperforms five features vaguely implied.
The instinct on a launch is to show everything. The result is a video that shows nothing convincingly. A viewer who leaves a launch film unable to answer "what is the one thing it does?" will not take action — even if the video was technically impressive.
The "out of scope" field matters as much as the rest. Naming what the video is not covering prevents brief creep that adds production time and dilutes the argument.
03 — Real UI access
The real product UI is the only proof that the product exists and works.
A design-aware technical buyer — which is the primary audience for an AI startup launch — can identify AI-generated UI immediately. Hallucinated menus, garbled text, and approximate interfaces signal "this team could not show their real product." That is a credibility loss at the launch moment.
Important: AI-generated video cannot render legible product UI text as of June 2026 — confirmed across Kling 3.0, Seedance, and Veo 3. Any launch video that relies on AI-generated footage for the product UI is showing a hallucinated version of the product, not the real thing. Real UI access is what makes this avoidable.
04 — Brand assets
Missing assets on day one add more time than gathering them before the brief.
The brand asset checklist is mechanical — but it is the most commonly incomplete part of a first brief. A missing logo vector or an absent hex code surfaces at the moment the title card is being built, which is the worst time to wait for assets. The checklist makes "we are ready to start" checkable before the brief is submitted.
The reference videos field is the highest-leverage part of this section. References set the motion register and energy level in a way that 500 words of brief cannot. One good reference video is worth more than a detailed motion description.
05 — The aha moment
The video must be built toward the moment the product becomes real to the viewer.
The aha moment question is the most important in the brief because it names the destination. A launch film is not a tour of the product — it is a journey to the moment of understanding. Every scene before the aha builds tension or context; the aha resolves it.
Most founders have never been asked to name this moment explicitly. The exercise of answering it — "what is the exact screen state when a new user first thinks, I get it now" — produces the brief's most useful content. The answer tells production precisely what the film must build toward and what evidence it must show to get there.