AI Hero Video for Your Website

A static hero section converts worse than a living one. A short background video at the top of a landing page holds attention for an extra couple of seconds — often just enough for a visitor to start reading. That kind of clip used to mean a studio and a real budget. Today you can build it with AI from a single product screenshot or a room photo. Here is what a hero video should look like and how to ship one without slowing your site down.

What a background video should be

The core rule: a hero video is a background, not a commercial. It must not pull attention away from the headline and the button. So keep it short and calm:

4–10 seconds with a seamless loop — the viewer should never spot the cut.
Silent. Hero videos always autoplay muted, or browsers simply won't play them.
16:9 for desktop plus a separate vertical or square crop for mobile, so key motion isn't cut off on phones.
Gentle motion: a slow push-in, soft parallax, smooth animation. Harsh transitions in a background are distracting.

What to build it from

You don't need a film crew — one good source is enough: a screenshot of your product UI, a product photo, or a shot of a space. AI adds motion to it while keeping the object itself recognizable. You can generate that clip from text or an image in Twelver— a single chat that makes video, images, voiceover and music without separate tools.

A prompt for a hero video

Describe the frame precisely and always state what must not change. A working template for a SaaS dashboard:

"Create a short silent hero video from this UI screenshot. Keep the layout, elements and text unchanged. Add restrained motion: the cursor glides to a key card, metrics highlight softly, subtle background parallax. Premium B2B landing-page style, clean and calm, no new text, no distorted UI, smooth 6-second loop."

Constraints worth keeping in every prompt: "keep UI layout and text stable", "no new labels", "no distorted UI", "silent autoplay loop".

Keep it from slowing the site

Compress hard. For a background, file size matters more than cinematic detail. Export MP4/WebM and compress aggressively.
Always keep a static fallback image from the same frame — for slow connections and reduced-motion settings.
Keep text and buttons in HTML, not inside the video — otherwise accessibility and SEO suffer.
Check the mobile crop: the important motion must stay centered.

Common mistakes

Too much motion — the product stops being recognizable.
Trying to cram every feature into one loop.
Critical text baked into the video, breaking localization and access.
No static fallback — a blank screen on slow connections.

A background video is a cheap way to make a landing page feel alive and modern. And you can build the clip itself from your screenshot or photo in a couple of minutes with Twelver: describe the frame or upload an image, and get a ready video you only need to embed.