# VideoDuo

> VideoDuo is a browser tool for App Store header videos that turns your app icon into a 21:9 product page header video built to App Store Connect specs.
> For iOS developers and small teams adding a header to their product page. Upload your icon, pick a style and a motion, preview for free with a watermark, and use one credit only for the final 4K file.

Primary topic: app store header video.

## What it does

- A scene made from your icon: VideoDuo reads your icon's colours and generates cinematic 21:9 scenes around it, so the header looks like your app, not a stock template.
- Built to Apple's specs: Every final render has the exact header size, ratio, length and frame rate App Store Connect asks for, and our server checks the file before you download it.
- Preview on iPhone and iPhone Duo: See the header inside a product page preview on iPhone and the iPhone Duo foldable, then export Duo screenshots in both display sizes.
- Pay per run: 1 credit per core action, bought in one-time packs.

## Output specs (checked on the server before download)

- Product page header video: 21:9, exactly 3840 x 1646, 5-30 s, 30 or 60 fps, H.264 in mp4 / mov / m4v, no alpha, no extra metadata.
- Free draft preview: 1920 x 824, watermarked, rendered in the browser.
- iPhone Duo screenshots: outer 1398 x 2034, inner 2007 x 2853 (portrait).
- Reference only (not generated): universal header PNG 5244 x 2950; search results asset 3:2, 1920 x 1280 to 3840 x 2560.
- Numbers last checked against Apple's documentation on 2026-10-30: https://videoduo.topxup.com/specs

## API for AI agents

- Base: https://videoduo.topxup.com/api/v1 (Bearer key created at https://videoduo.topxup.com/app/agent; same account, same credits).
- POST /api/v1/scenes: scene candidates for an icon.
- POST /api/v1/renders, GET /api/v1/renders, GET /api/v1/renders/{id}: start a render (uses 1 credit), list renders, read status, check report and download links.
- POST /api/v1/checks: check a header video, header image or Duo screenshot against the specs (free).

## What it explicitly does not do

- VideoDuo makes the header video and checks it against Apple's published specifications. It cannot promise App Review approval, it does not upload to App Store Connect for you, and the video never shows 3D or animated Apple devices: devices appear only in the on-site preview.
- VideoDuo is not affiliated with Apple. Files are checked against Apple's published specifications; App Review makes the final decision.

## Pricing

- Starter: USD 9.99 one-time for 1 credits (1 credit per run).
- Plus: USD 24.99 one-time for 3 credits (1 credit per run).
- Pro: USD 59.99 one-time for 10 credits (1 credit per run).
- One-time payments, no subscription. Full refund within 7 days: https://videoduo.topxup.com/refund-policy

## Questions people ask

- What is VideoDuo? VideoDuo is a browser tool that turns your app icon into an App Store product page header video built to App Store Connect specs. Previews are free; the final 4K render uses one credit.
- Is there a free tier? Yes. Watermarked draft previews are free. You only use a credit when you render the final full-size file, and a render that fails gives its credit back.
- Where does the header video appear? At the top of your App Store product page, above the icon, on iOS 27 and iPadOS 27 or later. It is optional and does not replace your screenshots or App Preview videos.
- Do I need to submit a new build? No. Header assets can be submitted for review on their own and, once approved, used on the version that is already live.
- Does VideoDuo upload to App Store Connect for me? No. You download the MP4 and its poster frame, then upload them in App Store Connect under Product Page Information → Header and Search Results.
- How does pricing work? Buy a credit pack once, no subscription. Each final 4K render uses one credit; previews are free and a render that fails gives its credit back. Unused packs can be refunded within 7 days (see the refund policy).

## Pages

- [VideoDuo](https://videoduo.topxup.com/): Turn your app icon into an App Store header video built to App Store Connect specs. Preview free on iPhone and iPhone Duo; pay only for the final 4K render.
- [Pricing](https://videoduo.topxup.com/pricing): plans and what each includes.
- [Refund policy](https://videoduo.topxup.com/refund-policy): refunds and what happens to spent credits.
- [Examples](https://videoduo.topxup.com/examples): 9 example header videos (fictional sample apps) by style.
- [App Store creative asset specs](https://videoduo.topxup.com/specs): every header, search and iPhone Duo size in one table, with a free file checker.
- [App Store header video specs](https://videoduo.topxup.com/specs/app-store-header-video-specs): App Store header video specs in one table: 21:9, exactly 3840 x 1646, 30 or 60 fps, 5–30 seconds, .mp4, .mov, .m4v. Plus the rejections people actually hit.
- [App Store product page header size](https://videoduo.topxup.com/specs/app-store-product-page-header-size): The App Store product page header size: 3840 x 1646 (21:9) for video and image, or 5244 x 2950 (16:9) PNG that also works in search results.
- [App Store custom product pages header](https://videoduo.topxup.com/specs/app-store-custom-product-pages-header): Give every App Store custom product page and product page optimization treatment its own header: where to set it and what the Asset Library does.
- [iPhone Duo screenshot size](https://videoduo.topxup.com/specs/iphone-duo-screenshot-size): iPhone Duo screenshot sizes: outer display 1398 x 2034, inner display 2007 x 2853 (portrait). How to make both from iPhone screenshots.
- [iPhone Duo screenshots](https://videoduo.topxup.com/iphone-duo-screenshots): Free iPhone Duo screenshot maker: turn your iPhone screenshots into outer and inner display sets in your browser, checked for exact size, alpha and metadata.
- [Privacy](https://videoduo.topxup.com/privacy) · [Terms](https://videoduo.topxup.com/terms) · [Contact](https://videoduo.topxup.com/contact)

## Notes

- Canonical origin: https://videoduo.topxup.com
- Every page is server-rendered; no JavaScript is required to read the content.
- Sitemap: https://videoduo.topxup.com/sitemap.xml