The demo reel / Nimbus breakdown
One frame carries the whole claim.
This is a full breakdown of one ten-second ad: the brief, the opening line, the stack, and the finished video. NIMBUS is a fictional mini projector we invented, and this is a self-initiated spec ad, not client work. Gadget buyers judge size and picture at once, so we put both in the same frame.
The finished ad. 10 seconds, 9:16, sound on. Every frame AI-generated. The “portfolio demo” watermark is ours — client deliveries ship clean.
The brief we wrote ourselves
- Product
- NIMBUS, a fictional mini projector for the bedroom.
- Audience
- People weighing a small projector against a real TV.
- Constraint
- Ten seconds, one continuous demo shot, no filmed footage.
- Format
- In-situ bedroom demo · talking head
- Niche
- Tech & Gadgets
The opening line
“I replaced my TV with this.”
The opening line is a claim a viewer can verify inside the frame: a wall-sized picture plays behind the speaker while the projector making it rests in one hand. In the first second the eye tests the claim against the picture, so the ad earns attention by being checkable rather than loud.
Why this format. Gadget buyers are measuring two things at once, the size of the device and the quality of its picture, and an in-situ demo puts both in the same frame. No cut, no beauty shot, just the trade-off laid bare for the eye to judge.
How it was built
- 01
Hero still
One image, generated with Nano Banana Pro at 9:16. Framed like a phone photo rather than a product shot: the item in hand, the brand name legible on the label, light coming from somewhere plausible.
- 02
Motion and voice
That still becomes frame one. Seedance 2.0 takes it to ten seconds of 720p video and generates the audio in the same pass. Spoken lines are written into the prompt, so the delivery is lip-synced from the start instead of dubbed on afterwards.
- 03
Check before keep
Nothing survives because it looked fine as a thumbnail. We read the stream data with ffprobe, build a contact sheet of frames with ffmpeg, and compare the spoken audio against the script that was written. Takes that drift from the brief get regenerated, not patched.
- 04
Finish
The approved take is cut and packaged with ffmpeg for wherever it will run. Vertical for Reels and TikTok here; the same take can be reframed for feed or landscape if the brief asks.
What to watch for
The wall proof
The large colorful image filling the wall behind her is the claim made visible: the picture the small projector replaces.
Scale in one hand
The projector sits small in one palm at chest height, so the device's true size reads the moment the eye lands on it.
The turn to wall
Midway she turns and raises the projector toward the wall, then back to camera, tying the device to the picture it casts.
What this page is not
Every frame here is AI-generated, and NIMBUS is a brand we invented for this demo. We claim no view or sales numbers, because this ad was never run as paid media. With a real product we'd shoot around the actual projector and a real bedroom wall.
We have no published reviews yet, so we are not going to borrow credibility we haven't earned. No client names, no engagement numbers, no invented case studies. What we can show you is the work and the method, in full, and let you judge whether it clears your bar.