Motion Prompt Lab. Duration — 720×1280 · 9:16 vertical Veo 3.1 Google Flow · Veo 3.1 (text-to-video)
Run log
ModelVeo 3.1 Fast
Renderer / stackGoogle Flow · Veo 3.1 (text-to-video)
Iterations to final2
Generations2 (all counted, failures included)
Flow credits spent30
Format720×1280 · 9:16 vertical
Published2026-10-30
What broke (and the fix)
- Generation 1 (Veo 3.1 Lite, 10 credits) framed the shot and the bottle correctly but garbled the spoken line — playback transcripts caught 'cagging'/'cang' fragments and the sentence came out repeated and fragmented. That take was discarded and never reached the site. The Veo 3.1 Fast re-roll (20 credits) delivered the full line cleanly: 'Okay, this bottle kept my water ice-cold through my entire shift.'
- Disclosure: the performer, the kitchen and the bottle are all generated, and the spoken line is a script we wrote for the shot — this entry demos the UGC ad format; it is not a real customer's review.
Original prompt Tested AI video
Veo 3 UGC Selfie Ad Prompt — Water Bottle Testimonial
by MotionPrompts (own run)
Prompt
Banned list —Beat grid —Build method —Self-review —
Vertical front-camera UGC video, as if filmed on a phone in a bright apartment kitchen. A woman in her late twenties with dark hair in a ponytail holds a matte sage-green insulated water bottle beside her face, looks straight into the lens, smiles naturally, and says in a casual, upbeat tone: 'Okay — this bottle kept my water ice-cold through my entire shift.' Subtle handheld micro-shake, natural window light, realistic skin texture, the bottle label stays blank, no captions, no music, only quiet room ambience.
Use this prompt
Model & settings
ModelVeo 3.1 Fast
Aspect9:16
Duration8s
Generations2
Flow credits30
No project file to download — a text-to-video prompt has no code. The prompt above plus these settings is the whole recipe: paste it into Google Flow (or any Veo 3.1 surface), set the aspect, and generate.
The exact text pasted into Google Flow for the UGC selfie ad — no structure tags, no code; Veo generated the film from this one paragraph. This entry cost 30 Flow credits (10 Lite + 20 Fast — the Lite take's speech came out garbled, so the Fast re-roll is the shipped final); together with the product splash entry it spent 40 of the account's 50-credit daily allowance, leaving 10 unspent.
Related videos
Veo 3 ASMR Prompt — Glass Fruit Cutting (Vertical)
Veo 3.1·9:16 vertical TestedAI video
Vertical hook prompt — 6-second social hook — HyperFrames prompt (stop-scroll slam + payoff in 6 seconds)
HyperFrames·9:16 vertical Tested
Quote card prompt — daily quote series (vertical) — Remotion prompt (series bar + DAY 14 marker)
Remotion·9:16 vertical Tested
Stat hook prompt — one big number (vertical) — HyperFrames prompt (87% count-up + label)
HyperFrames·9:16 vertical Tested