AIプロモ動画メーカー：新作・セール動画を数分で
新作、セール、イベント向けのプロモ動画を生成。プロモと広告の構成の違い、15〜30秒テンプレート、商品URLからの直接生成。
A promo video announces something to people who already know you. An ad interrupts strangers. That single distinction changes the entire structure: a promo can open with the news, while an ad has to earn attention before it is allowed to deliver any. Most weak promo videos are actually ads in disguise — thirty seconds of atmosphere before the offer appears. This guide covers the promo structure, the 15–30 second template, generating straight from a product URL, and the three things that make generated promos look cheap.
Promo vs Ad: Structural Difference
| Promo | Ad | |
|---|---|---|
| Audience | Already knows you | Cold, interrupted |
| Opening | The news itself | A hook that stops the scroll |
| Length | 15–30s (up to 60s owned) | 9–15s |
| Goal | Inform and prompt action | Earn attention, then convert |
| Placement | Email, site, own channels | Paid feeds |
If your promo will run as paid media to cold traffic, treat it as an ad instead and use the hook-first structure in the UGC ads guide.
The 15–30 Second Promo Template
0:03–0:10 — The thing itself. Product in motion: rotation, texture, mechanism, or in use. One or two shots.
0:10–0:18 — One reason it matters. A concrete detail, not a slogan. Material, capacity, speed, price.
0:18–0:25 — The terms. Dates, discount, availability. Legible on screen — this is what viewers rewind for.
0:25–0:30 — The action. Where to go. One destination only.
Generating the Shots
Promo video is mostly product motion, which is the strongest case for image-to-video: anchoring the first frame to your real product photo locks its shape and label so the model cannot reinvent them.
Texture detail: "Extreme close-up of the product surface, shallow depth of field, light rakes slowly across the material, no distortion, 5 seconds."
In-use moment: "Hands using the product naturally on a table, natural window light, product shape unchanged, slight handheld movement, 5 seconds."
Event or sale atmosphere: "Empty retail interior with warm lighting, camera drifts forward slowly, clean minimal composition, no people, no text, 5 seconds."
Generate these in AI Product Video, which defaults to marketplace-native specs, and keep "maintains exact shape, no distortion" in every product prompt — shape morph is the most common product-video failure, as covered in the Amazon product video workflow.
The Fastest Route: Generate From Your Product URL
When the offer already exists in writing on your site, you do not need to write prompts from scratch. URL to Video reads the images and copy from a product or landing-page URL, drafts a script and shot list, and renders to platform specs. This is the difference between a promo taking twenty minutes and taking an afternoon — and at catalogue scale it is the only viable approach.
Three Things That Make a Generated Promo Look Cheap
In order of impact — and notably, none of them are about the generation quality:
- Inconsistent grade across clips. Three clips generated separately will have three different colour temperatures unless you say otherwise. Repeat one lighting and grade clause in every prompt, and correct the rest in the edit.
- Default template typography. Nothing signals "made in a hurry" faster than stock title fonts. Use your brand typeface at a sensible size, left-aligned, with real margins.
- Motion that ignores the music. If cuts land off the beat the whole piece feels amateur regardless of footage quality. Cut on the beat, or use no music at all.
Fixing the grade and the typeface lifts perceived quality more than re-generating any clip.
One Promo, Every Placement
- Generate once at the highest quality with safe margins around the subject so reframing does not cut it.
- 9:16 for Stories, Reels, TikTok, and Shorts.
- 1:1 or 4:5 for feed placements.
- 16:9 for the site hero, email, and YouTube.
- A 6-second cut for bumpers and previews — usually just the news beat plus the action beat.
What to Measure
Promo video has a different success metric from an ad. Since the audience already knows you, watch click-through from the placement rather than 3-second retention: the question is whether the offer is compelling, not whether the opener stopped the scroll. If click-through is weak but completion is high, the video is fine and the offer is not.
Make Your First Promo
Paste your product URL into URL to Video and let it draft the script, or generate a hero rotation directly in AI Product Video if you already know the shot you want. For the full e-commerce picture — listing videos, storefront placement, and platform specs — see the product listing guide and the Shopify walkthrough.
よくある質問
What is a promo video and how is it different from an ad?
How long should a promo video be?
Can I generate a promo video from just my product page?
What makes a generated promo video look cheap?
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